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Transcription

1 6 Y e a rs PRICE LIST 06 07

2 6

3 VENSIL R Glassware List c Effective st April, 06 (Superceding earlier List) TM 0 ISO 900 : 008 VENSIL GLASS WORKS LIMITED DOORAVANINAGAR, BANGALORE-6 INDIA Phone : (080) 8, 8 067, 8 00, 07 Fax : (080) 8 GRAMS : VENSILGLAS c Copyright registered vensil@blr.vsnl.net.in WEBSITE :

4 NEW STOP g GROUND JOINT g (CONE) INSERTg CAP g O RING g GROUND JOINT g (SOCKET) THREADED EASILY SEPARABLE AND LEAK - TIGHT GROUND GLASS JOINTS At VENSIL, we always pursue a policy of meeting the changing needs of the end user. We have thus introduce ROTAGRIP jointed glassware that is currently only available in USA and Europe. The joint consists of: special screw threaded ground glass joints, an O ring, a connecting cap and an insert. The connecting cap holds together the joints, the O ring seals and the insert facilitates easy separation of the joints. This joint has all the advantages of a standard ground glass joint and additionally ;. The joint can be very easily separatedthere is never any locking or freezing ofjoints. The joint provides for a leak-tight seal.. The joint is held together firy. PARTS ASSEMBLY Please refer Page 7 for listing. ii

5 Glassware iii

6 ACCURACY OF STANDARDS FOLLOWED FOR VENSIL VOLUMETRICWARE Sugar Flasks IS : 67-9 Measuring Cylinders, Stoppered and Spout, class B IS : Volumetric Flasks IS : Volumetric Pipettes, one mark IS : 7-97 Burettes, Single and Double Bore Stopcocks IS : Milk Test Pipettes IS : 0-96 Nessler Cylinders IS : Measuring Pipettes IS : 6-98 Measuring Pipettes, Micro IS : Crow Receivers IS : Saybolt Viscosity Flasks ASTM : D88/6 Kohlrausch Flasks BS : 6-9 Phenol Flasks BS : Pressure Filling Burettes BS : 8-96 iv

7 Care and Maintenance of Vensil Glassware When treated with proper care VENSIL Laboratory apparatus will give long and satisfactory service. To assist users in obtaining the maximum life and performance from their apparatus the following notes are given. HEATING AND COOLING (a) Follow the instructions of manufacturers when using electrical heat sources. (b) No vessel should be left unattended when evaporation work is being carried out. If the heat source is not adjusted correctly when dryness condition is approached, the vessel may crack or explode. As the liquid level drops, the temperature should be gradually lowered. (c) Although VensiI glassware can withstand extreme temperatures, sudden temperature changes may cause the vessel to break. Hence caution is required when removing glassware from a heat source and placing on a cold or damp surface should be avoided. (d) Vessels should be cooled slowly to prevent thermal breakage. (e) A badly scratched or etched vessel should not be heated at all as the thermal strength might have been greatly reduced (f) Point source heating should be avoided as it increases the chance of breakage. (g) The best method is to diffuse the heat source by a metal gauze or by using air or water bath. It is safer to move the vessel slowly with even heating in relation to the heat source. (h) When rapid heating of the vessel or the contents is required anti-bumping devices such as glasswool or powdered pumice should be used. Sharp edged materials such as broken porcelain should not be used as anti-bumping devices as it may cause internal abrasions, thus reducing mechanical and thermal strength of the vessel. MIXING AND STIRRING (a) Usage of policeman or similar device on stirring rods shall prevent scratching the inside of the vessel. (b) Using covered follower shall prevent abrading the inside of the vessels, when using with magnetic stirrer. (c) The height of the stirrer should be predetermined before use to ensure there is no contact between the stirrer blade and the bottom of-the sides of the vessel when using glass or metal mechanical stirrers. (d) Sulphuric acid and water should not be mixed inside a measuring cylinder as the heat of reaction can break the base of the cylinder. VACUUM AND PRESSURE (a) Beyond the recommended safe limit glassware should not be used either under vacuum or pressure. (b) When working with glassware subjected to vacuum or pressure it is advisable to use a safety screen. (c) Glassware should not be subjected to sudden pressure changes and gradually applied and released positive and negative pressures. v

8 JOINING AND SEPARATING GLASS APPARATUS (a) While not in use or when stored insert a thin strip of paper between joint surface in glass stopcocks to prevent sticking. (b) With lubricant still on the ground surfaces stopcocks should not be stored for long period. (c) Ground joints and stopcocks are to be kept completely free from dirt. After use ground glass joints should be separated and kept lubricant free. (d) In case of ground joints sticking, separation can be achieved by carefully rocking the cone in the socket, or gently tapping the socket rim on a wooden surface or heating the socket in a localised flame. The use of penetrating oil shall also help in aiding separation. (e) When inserting a glass tubing into a rubber bung use of water, oii or glycerol is recommended and wearing heavy protective gloves is a must. (f) The ends of glass tubing should always be fire polished before attempting to insert into a flexible tubing or bung. CLEANING (a) Always glassware should be washed or soaked immediately after use. (b) When using new glassware for precise chemical test they should be soaked for several hours in dilute acid solution as they may be slightly alkaline in reaction which could affect test results. (c) Nitric acid, aqua regia, fuming sulphuric acid or chromic acid solution can be used with extreme care if soap water or detergent solution are found inefficient. (d) Always use cleaning aids, brushes, etc., in good condition and worn out brushes will lead to serious abrading of the glassware. (e) The final rinsing after cleaning should always be with distilled water. (f) All glassware especially volumetric ware must be absolutely grease-free. Grease and other contaminating materials will prevent the glass from becoming unifory wetted and in turn will affect the volume of liquid delivered. (g) In all instances the glassware must be kept physically clean and in most cases chemically clean or bacteriologically clean. (h) Sterilising the glassware contaminated with blood culture media, viruses or bacteria immediately after use and before washing is must either by boiling for 0 minutes in detergent solution or autoclaving or immersing in a steam steriliser. Autoclaving is absolutely essential if viruses or spore forming bacteria are present. (i) Special care should be taken while cleaning pipettes and burettes as damage to the jets and or stopcocks can affect their subsequent accuracy. (j) High concentration of hydrofluoric acid or hot phosphoric acid or caustic alkali solution should not at all be used for cleaning. vi

9 SINTERED WARE (a) Eventhough sintered ware are designed for the application of vacuum or for passage of gases at a relatively low pressure, the differential pressure must not exceed psi. (b) As the resistant to thermal shock of sintered ware is comparatively less, they should not be subjected to excessive temperature changes or to direct flames. (c) Vensil sintered crucibles if dry at room temperature can be placed directly in a drying oven at C. (d) If the cycle of heating and cooling is gradual, sintered ware may be safely heated in a furnace to 0 C. (e) New sintered filters are to be washed with hot hydrochloric acid and rinsed with distilled water before use to ensure that loose particles if any, are removed from the filter. (f) Sintered glassware are to be cleaned immediately after use and this is the most favourable time for easy cleaning. By backflushing with water many precipitates can be easily removed. In case of fine porosity filters, it should be done carefully as positive pressure may break the filter. (g) When precipitates clog the filter they should be removed by chemical treatment. A few suggestions are given below which may prove useful. ORGANIC SUBSTANCES: CHROMIC ACID CLEANING SOLUTION OR CONCENTRATED SULPHURIC ACID CONTAINING A LITTLE POTASSIUM NITRATE. (CHROMIC ACID CLEANING SOLUTION SHOULD BE AVOIDED FOR BACTERIOLOGICAL PHARMACEUTICAL AND BIOLOGICAL WORK). FATTY MATERIALS: CARBON TETRACHLORIDE OR SUITABLE ORGANIC SOLVENT. ALBUMEN, GLUCOSE: HOT AMMONIA OR HYDROCHLORIC ACID, MIXTURE OF HOT CONCENTRATED SULPHURIC AND NITRIC ACIDS. MERCURY RESIDUES: HOT CONCENTRATED NITRIC ACID MERCURY SULPHIDE: HOT AQUA REGIA : SILVER CHLORIDE: AMMONIA OR SODIUM HYPOSULPHITE STANNIC OXIDE: BOILING SULPHURIC ACID (ITEM TO BE LEFT IN THE ACID ITSELF TO COOL TO AVOID UNDUE THERMAL STRAIN). BARIUM SULPHATE: HOT CONCENTRATED SULPHURIC ACID vii

10 COPPER OR IRON OXIDES: HOT CONCENTRATED HYDROCHLORIC ACID WITH POTTASSIUM CHLORATE. ALLUMINA OR SILICA RESIDUES: % HYDROFLUORIC ACID FOLLOWED BY CONCENTRATED SULPHURIC ACID. (TO BE RINSED WITH DISTILLED WATER IMMEDIATELY AND THEN WITH ACETONE TILL NO TRACE OF ACID REMAINS). PERSONAL SAFETY (a) Tongs or heat resistant gloves should be used to remove glassware from heat sources. (b) The outside of acid bottles should be flushed with water before opening. Never put the stoppers on the laboratory bench top where someone else may come in contact with acid residue. Do not drink from a beaker or likewise apparatus in a laboratory as it is potential danger. (d) Mechanical means such as rubber bulb may be used when using concentrated acids, alkalis or potentially biohazardous materials and avoidpipetting by mouth. (e) A container should not be filled with material other than that specified on the labels. It is advisable to label all containers before filling. (f) Usage of a protective mask or respirator is must when working with very toxic substances and where possible such work should be carried out in a fume cupboard. viii

11 Technical Data VENSIL Low Expansion Borosilicate Glass Glass has been made by man for nearly 6000 years, Yet, over all these centuries, developments in its applications and capabilities have been restricted within very narrow confines. In this last half century, the rapid strides in science and technoloy have led to extensive research into the properties and compositions of glass and it is possible to construct a suitable glass to meet virtually any specific need. The requirements of Laboratory work generally dictate that the glass readily accepts moulding into desired shape or form, maintains maximum inertness when in contact with widest range of chemical substances, withstands thermal shocks without fracture and higher temperature work without deforming and survives knocks of normal Laboratory handling, washing and sterlising procedures. Such a glass is VENSIL. Chemical Composition VENSIL glass is of low alkali borosilicate formula of Code No. 770 and its typical chemical composition is as below. % by weight Silica 8 Boric Acid Sodium Oxide Alumina It is free of Magnesia-Lime-Zinc group: contains only traces of heavy metals. Thermal Properties VENSIL Glass having low co-efficient of thermal expansion can withstand higher temperature gradients and sudden temperature changes. The measured properties are as below. Co-efficient of Linear Expansion (between 0-0 C) Strain Point Annealing Point Softening Point Working Point Specific Heat.X C C 6 C 80 C C / In general it is recommended that the strain point C be regarded as maximum safe operating temperature. 0 ix

12 Technical Data Chemical durability Water & Water Vapour VENSIL glass has a relatively low alkali content and consequently highly resistant to water and water vapour attack. Acid VENSIL glass, having approximately 80% silica is exceptionally resistant to all acids except hydrofluoric and hot phosphoric. Akali: Alkaine solutions attack all glasses and VENSIL glass can be classified as reasonably resistant. Some of the result of typical tests undertaken with various solutions are as below. Contact Chemical & Duration Loss in Weight mg/m Distilled water at 0 C for 6 hours Steam at C for hour Hydrochloric acid boiling for 6 hours 0 Sulphuric acid 80% at 0 c for hours 0 0 Normal solution of Sodium Carbonate boiling for 6 hours 000 Infusion fluids at C for ½ hours Isotonic Sodium Chloride 0.8% 70 Glucose % 0 Trisodium Citrate % 000 x

13 CONTENTS PART I Adapters Beakers & Bottles Burettes Condensers Columns Cylinders Flasks Funnels Joints Pipettes Sintered Ware Stirrers Stopcocks & Stoppers Tubes Viscometers PART II Assemblies Assemblages Chromatography Determination Extraction Gas Analysis Stills Test, Petroleum Four Neck Flasks Filtration Culture Tissue Grinders Impingers Amberware Rotagrip Jointedware Additions

14 Adapters Reduction, Expansion A- Reduction Adapters, VENSIL A Socket Cone /9 9/ 9/ 9/ / / /0 9/ 9/ / /0 / 9/ / /0 / / /0 / /0 / / A- Expansion Adapters, VENSIL A Socket Cone 9/ 9/ 9/ / / / / /0 /0 /0 / / / 9/ / 9/ /0 /

15 Adapters Multiple VENSIL A- Multiple Adapters, Two Necks Parallel, VENSIL Socket Cone /9 9/ / / 9/ A- A- Multiple Adapters,Two Necks, One Vertical and One at Angle, VENSIL Socket Cone A- A- Multiple Adapters, Three Necks, Two Parallel and One at Angle,VENSIL Parallel Neck Socket Angle Neck Socket Cone 9/ / / A- A-6 Swan Neck Adapters, For use With Airleak Tube, VENSIL Socket Cone A-7 Adapters With T Connection, VENSIL Socket Cone / A-6 A-7

16 Adapters Cone, Socket A-8 Cone Adapters, Straight Connection Plain, VENSIL A-8 Cone /9 9/ / A-9 Cone Adapters, Straight Connection with Stopcock, VENSIL A-9 Cone / A- Cone Adapters, Right Angle Connection, Plain, VENSIL A- Cone /9 9/ / A- Cone Adapters, Right Angle Connection with Stopcock, VENSIL A- Cone / / A- Socket Adapters, Straight Connection with Stopcock, VENSIL A Socket 9/

17 Adapters Receiving VENSIL A- Receiver Adapters, Plain Bend, Short, VENSIL Socket /9 9/ A- Receiver Adapters, Plain Bend, Long, VENSIL Socket /9 9/ / A A- Receiver Adapters, Straight Delivery, VENSIL Socket 9/ / /0 A A-

18 Adapters Receiving A-6 Receiver Adapters, Plain Bend, Socket to Cone, VENSIL Socket Cone 9/ / 9/ / A-6 A-7 Receiver Adapters, Bent with Vent, VENSIL Socket Cone /9 9/ / 9/ A-7 A-8 Receiver Adapters, Bent with Vacuum Connection, VENSIL A-8 Socket Cone 9/ 9/ A-9 Receiver Adapters, Vertical with Vacuum Connection, VENSIL 00 0 Socket Cone A-9 A-0 Receiver Adapters, Bent with Socket Connection, VENSIL A Socket Cone

19 Adapters Receiving VENSIL A- Receiver Adapters, Bent with Multiple Connection (PIG), VENSIL Socket Cone /9 9/ / A- Receiver Adapter, Multi-Limb, Vacuum, VENSIL Socket 00 (To take x 0 flasks) A- Cone 97.0 A- A- Receiver Adapter, Vertical Delivery, VENSIL Socket Cone 0 (To be used with 00) A- A- Receiver Adapter, Sloping Delivery, VENSIL Socket Cone 0 (To be used with 00) A- A- Intermediate Receiver Adapters (PERKIN) VENSIL Socket Cone A- 7

20 Adapters Connecting A-6 Recovery Bend, Sloping, VENSIL A-6 Flask Cone Cond. Cone / 9/ / / / 9/ / A-7 Recovery Bend, Vertical, VENSIL A-7 Flask Cone Cond. Cone / / A-8 Plain Stillheads, Sloping, VENSIL A-8 Flask Cone Cond. Cone Socket / 9/ 9/ / / / / 9/ / / A-9 Claisen Heads, Sloping, VENSIL A-9 Flask Cone Cond. Cone Socket / / 9/

21 Adapters Connecting VENSIL A-0 Splash Head Adapters, VENSIL Socket Cone A- Splash Heads, Sloping, VENSIL Flask Cone Cond. Cone / 9/ / / / 9/ / A-0 A- A- Splash Heads, Vertical, VENSIL Flask Cone Cond. Cone A- A- Steam Distillation Heads, Sloping, VENSIL Flask Cone Cond. Cone / A- A- Splash Head, Double Bulb, Sloping, VENSIL Flask Cone Cond. Cone Socket A- Anti-Foaming Splash Head, Sloping, VENSIL Flask Cone Cond. Cone Socket 08 A Plain Adapters are catalogued in page 7 A- 9

22 Adapters Thermometer, Inlet Tubes A-6 Thermometers with Adjustable PTFE Cone, VENSIL A-6 Cone /9 /9 /9 Range -o 0o 0o -o 0o 0o -o 0o 0o to to to to to to to to to o C o C 60o C o C o C 60o C o C o C 60o C (These thermometers ARE NOT OF OUR MAKE. In order to assemble full assemblies,we supply the same with adjustable PTFE Cone) A-7 Thermometer Pocket, Closed end, VENSIL A-7 Cone Stem length mm A-8 Thermometer Pockets, Open end for Closing, VENSIL A-8 Cone Stem length mm A-9 AIR/Steam Inlet Tubes, Straight, VENSIL Cone Stem length mm /6 /9 9/ A-0 AIR/Steam Inlet Tubes, Bent, VENSIL A-9 Cone Stem length mm /9 0 A

23 Adapters Tube VENSIL A- Drying Tubes, Angled, VENSIL Cone /9 9/ A- A- Tube Adapters for Vacuum Release, VENSIL Cone A- A- Tube Adapters for Vacuum Control, VENSIL Cone A-

24 Beakers, Bottles Reagent B- Beakers, Low Form, with Spout, VENSIL B- ** B- Reagent Bottles, Narrow Mouth, Stoppered, VENSIL Joint / / 9/ B- B- Reagent Bottles, Narrow Mouth, with Screw Cap, VENSIL B Screwcap size B- Reagent Bottles, Wide Mouth, with Screw Cap VENSIL 9 B- Screwcap size 0 ** ** Please refer Page No.78 for bigger sizes.60

25 Bottles Specific Gravity VENSIL B- Specific Gravity Bottles, with Capillary Bore Stopper, Unadjusted VENSIL Joint / / / / / ML B- B-7 Specific Gravity Bottles, with Capillary Bore Stopper, Adjusted, Actual Volume marked, VENSI Joint / / / / / ML B-7 B-6 Specific Gravity Bottles, Weld, with Cap, VENSIL Internal Joint External Joint / / / / / / B-6 B-7 Specific Gravity Bottle, Hubbard, Conical, VENSIL 06 Joint / B-7 B-8 Specific Gravity Bottle, Hubbard, Cylindrical, VENSIL 07 Joint / B-8

26 Bottles Weighing B-9 Weighing Bottles, Tall Form, Common Type, VENSIL B-9 Ht.x Dia. mm Approx. Joint size 0x0 x 60x0 80x0 60 9/ / 9/ 0/ B- Weighing Bottles, Tall Form, Cap Type, VENSIL B Ht.x Dia. mm Approx. Joint size x8 60x8 80x8 9/ 0/ / B- Weighing Bottles, Squat Form, Common Type, VENSIL B- Ht.x Dia. mm Approx. Joint size x0 x x / / / B- Weighing Bottles, Squat Form, Cap Type, VENSIL B Ht.x Dia. mm Approx. Joint sizeze x8 x8 0/ / B- Pyknometers, VENSIL B

27 Bottles Weighing VENSIL B- Dilatometer, VENSIL 0 Description The body is graduated with an aribtrary scale with joints 70.0 B- Lunge-Rey Weighing Pipette, VENSIL Components Joint size Approx. 06 a. pipette b. Cover tube c. Cover flask /9 /9 /9 B B- B-6 Smith Weighing Burette, VENSIL 07. Upper Joints Lower Joints 9/7 / 7.60 B-7 Absorption Bulb, Midvale, VENSIL Joint size 08 B B-8 Absorption Bulb, Nesbitt, VENSIL 09. Joint size 0 /0 B B-8

28 Bottles Dropping, Wash B-9 Dropping Bottles, with Pipette Stopper, VENSIL B-9 Joint Size 0 60 / / 9/ B-0 Dropping Bottles, with Graduated Pipette Stopper, VENSIL B-0 Joint Size 0 60 / / 9/ B- Wash Bottles, Complete VENSIL Joint Size B- Wash Bottle Fitting Only, VENSIL B For 0 00 Note: Please refer 8,8 and 8 for Spare Flask of Wash Bottles. B

29 Bottles Gas Wash VENSIL B- Gas Washing Bottles Ordinary Complete (JOINT SIZE 9/), VENSIL B- Gas Washing Bottles, Bottle Only (JOINT SIZE 9/), VENSIL B B- B- Gas Washing Bottles Fitting Only (JOINT SIZE 9/) VENSIL For B- 7

30 Bottles Gas Wash B-6 Gas Washing Bottles, with Sintered end for Downward GasDistribution, Complete, (JOINT SIZE 9/), VENSIL. B Disc Por B-76 Gas Washing Bottles, with Sintered end for Upward Distribution, Narrow mouth, Complete, (JOINT SIZE 9/), VENSIL Cat No. B Disc por

31 Bottles Gas Wash VENSIL B-8 Gas Washing Bottles with Sintered end for Upward gas Distribution Complete (JOINT SIZE 0/8), VENSIL Disc Por B-8 B-9 Gas Washing Bottles, with Sintered end for Upward Gas Distribution, Bottle Only (JOINT SIZE 0/8), VENSIL B-9 B-0 Gas Washing Bottles, with Sintered end for Upward Gas Distribution, Fitting Only, (JOINT 0/8), VENSIL Disc por B-0 9

32 Burettes Single bore B- Burettes,Single Bore Glass Key Stopcock Class B, VENSIL 0 Sub-dvn. Tol ± B 0 B- Burettes, Single Bore Glass Key Stopcock, Class A, VENSIL Short line graduations and one-point works certificate Sub-dvn. Tol ± B- 8 9 A 0 7 B- 8 A B B- Burettes,Single Bore Glass Key Stopcock, Class A, VENSIL Long line graduations and five-point works certificate Sub-dvn. Tol ±

33 Burettes Single bore VENSIL B- Burettes, Single Bore Screwcock, Class B, VENSIL Sub-dvn. Tol ± B 0 B- Burettes, Single Bore Screwcock, Class A, VENSIL Short line graduations and one point works certificate Sub-dvn Tol ± Note : Please refer 6 & 6 for spare screwcocks & plungers. The Screwcocks are patented B- A B-

34 Burettes Single bore B-6 Burettes, Single Bore PTFE Key Stopcock Class B, VENSIL Sub-dvn. Tol ± B B-7 Burettes, Single Bore, PTFE Key Stopcock Class A, VENSIL Short line graduations and one-point works certificate 0 Sub-dvn. Tol ± A A 0 A B-8 Burettes, Single Bore PTFE Key Stopcock Class A, VENSIL Long line graduations and five-point works certificate Sub-dvn. Tol ± A A

35 Burettes Double bore VENSIL B-9 Burettes, Double Bore Glass Key Stopcock Class B, VENSIL Sub-dvn. Tol ± B 0 B-0 Burettes, Double Bore Glass Key Stopcock Class A, VENSIL Short line graduations and one-point works certificate Sub-dvn. Tol ± B A 0 B- Burettes, Double Bore Glass Key Stopcock, Class A, VENSIL Long line graduations and five-point works certificate B-0 7 Sub-dvn. Tol ± A B-

36 Burettes Double bore B- Burettes, Double Bore Screwcock, Class B, VENSIL 0 Sub-dvn. Tol ± B 0 B- Burettes,Double Bore Screwcock, ClassA, VENSIL Short line graduations and one-point works certificate Sub-dvn B- Tol ± A B

37 Burettes Double bore VENSIL B- Burettes, Double Bore PTFE Key Stopcock Class B, VENSIL Sub-dvn Tol ± B B- Burettes, Double Bore PTFE Key Stopcock Class A, VENSIL Short line graduations and one-point works certificate Sub-dvn Tol ± B A 0 B-6 Burettes Double Bore PTFE Key Stopcock Class A, VENSIL Long line graduations and five-point works certificate Sub-dvn Tol ± B A B-6

38 Burettes Overflow cup B-7 Burettes, Overflow Cup, Glass Key Stopcock, Class B, VENSIL Sub-dvn. To ± B-8 Burettes, Overflow Cup, Glass Key Stopcock, Class A, VENSIL Short line graduations and one-point works certificate 8 9 B Sub-dvn. Tol ± B-7 A B-9 Burettes, Overflow Cup, Glass Key Stopcock, Class A, VENSIL Long line graduations and five-point works certificate. Sub-dvn. Tol ± B-8 A B-9 6

39 Burettes Overflow cup VENSIL B- Burettes, Overflow Cup, Double Bore Screwcock, Class B, VENSIL Sub-dvn. Tol ± B- Burettes,Overflow Cup, Double Bore Screwcock, Class A, VENSIL Short line graduations and one-point works certificate Sub-dvn. Tol ± B B A B- 7

40 Burettes Overflow cup B- Burettes, Overflow Cup, PTFE Key Stopcock, Class B, VENSIL Sub-dvn. Tol ± B- Burettes, Overflow Cup, PTFE Key Stopcock, Class A, VENSIL Short line graduations and one-point works certificate. 8 9 B Sub-dvn. Tol ± B- 9 A B- Burettes, Overflow Cup, PTFE Key Stopcock, Class A, VENSIL Long line graduations and five-point works certificate. Sub-dvn. Tol ± B- 9 A B- 8

41 Burettes Centre Filling VENSIL B- Burettes, Centre Filling Glass Key Stopcock, Class B, VENSIL Sub-dvn. Tol ± B-6 Burettes, Centre Filling, PTFE Key Stopcock, Class B, VENSIL Sub-dvn. Tol ± Note : For Burette, 0 & B- Reservoir. 0 B-6 9

42 Burettes Pressure Filling B-7 Burettes, Pressure Filling Glass Key Stopcock, Class B, VENSIL Sub-dvn. Tol ± B 0 B-7 B-8 Burettes, Pressure Filling Glass Key Stopcock, Class A, VENSIL Short line graduations and one-point works certificate. A Sub-dvn. Tol ± B-8 B-9 Burettes, Pressure Filling Glass Key Stopcock, Class A, VENSIL Long line graduations and five-point works certificate. A Sub-dvn. Tol ± For Burette,,0 Reservoir B-9 Note : 0

43 Burettes Pressure Filling VENSIL B-60 Burettes, Pressure Filling, PTFE Key Stopcock, Class B, VENSIL Sub-dvn. Tol ± B B-60 B-6 Burettes, Pressure Filling PTFE Key Stopcock, Class A,VENSIL Short line graduations and one-point works certificate. Sub-dvn. Tol ± A B-6 B-6 Burettes, Pressure Filling PTFE Key Stopcock, Class A, VENSIL Long line graduations and five-point works certificate. Sub-dvn. Tol ± A 0 B-6

44 Burettes Enclosed Syphon B-6 Burettes, Pressure Filling Enclosed Syphon, Glass Key Stopcock, Class B, VENSIL B Sub-dvn. Tol ± B-6 B-6 Burettes, Pressure Filling, Enclosed Syphon, Glass Key Stopcock, Class A, VENSIL Short line graduations and one-point works certificate. A 0 B-6 Sub-dvn. Tol ± B-6 Burettes,Pressure Filling Enclosed Syphon, Glass Key Stopcock, Class A,VENSIL Long line graduations and five-point works certificate. A 0 B-6 Sub-dvn. Tol ±

45 Burettes Enclosed Syphon VENSIL B-66 Burettes,Pressure Filling, Enclosed Syphon, PTFE Key Stopcock, Class B, VENSIL B Sub-dvn. Tol ± B-66 B-67 Burettes, Pressure Filling, Enclosed Syphon, PTFE Key Stopcock, Class A, VENSIL Short line graduations and one-point works certificate. Sub-dvn. Tol ± A B-67 B-68 Burettes, Pressure Filling, Enclosed Syphon, PTFE Key Stopcock, Class A, VENSIL Long line graduations and five-point works certificate Sub-dvn. Tol ± A 0 B-68

46 Burettes Excess Store Back B-69 Burettes, Pressure Filling, Excess Store Back, Glass Key Stopcock, Class B, VENSIL B B-69 Sub-dvn. Tol ± B-70 Burettes, Pressure Filling, Excess Store Back, Glass Key Stopcock, Class A, VENSIL Short line graduations and one-point works certificate A Sub-dvn. ± Tol B-70 B-7 Burettes, Pressure Filling, Excess Store back, Glass Key Stopcock, Class A, VENSIL Long line graduations and five-point works certificate A 0 Sub-dvn. Tol ± B-7

47 Burettes Excess Store Back VENSIL B-7 Burettes, Pressure Filling, Excess Store Back, PTFE Key Stopcock, Class B, VENSIL Sub-dvn. Tol ± B B-7 B-7 Burettes, Pressure Filling Excess Store Back, PTFE Key Stopcock, Class A, VENSIL Short line graduations and one-point works certificate Sub-dvn. Tol ± A B-7 B-7 Burettes, Pressure Filling, Excess Store Back, PTFE Key Stopcock, Class A, VENSIL Long line graduations and five-point works certificate. Sub-dvn. Tol ± A B-7

48 Condensers Air, Liebig etc. C- Condensers, Air, VENSIL Length mm Tube Dia mm C- Condensers, Liebig, VENSIL Length mm Body Dia mm Length mm Body Dia mm Length mm Body Dia mm C- Condensers, Allihn, VENSIL C- C- C C- Condensers, Graham, VENSIL C- Condensers, Davies (DOUBLE SURFACE), VENSIL C- Length mm Body Dia mm C

49 Condensers Reflux etc. VENSIL C-6 Condenser, Thorpe (INLAND REVENUE), VENSIL 069 Length mm Body Dia mm C-7 Condensers, Hopkin (REFLUX), VENSIL Length Body mm Dia mm C-8 Bulbs Connecting, Sloping, Kjeldahl, VENSIL Bulb Dia mm 6 C C-7 C-9 Bulb Connecting, Vertical, Kjeldahl, VENSIL 06 Bulb Dia mm 8.80 C-8 C- Funnel Connecting Bent, (FOR KJELDAHL ASSEMBLY), VENSIL C- Absorber (FOR KJELDAHL ASSEMBLY), VENSIL 066 Bulb Dia mm 0 C C- 7 C-

50 Condensers Air, Liebig C- Condensers, Air, VENSIL Joint Length mm / C- Condensers, Air, Vertical, VENSIL C- C- Joint Length mm C- Condensers, Liebig, VENSIL Joint Length mm /9 /9 9/ 9/ / C- Condensers, Liebig, Vertical, VENSIL C- C- Joint Length mm

51 Condensers Coil VENSIL C-6 Condensers, Coil (GRAHAM), VENSIL Joint Length mm / 9/ C-7 Condensers, Coil (GRAHAM), Vertical, VENSIL Cone Length mm / / 0/8 /0 / C-6 C-7 C-8 C-8 Condensers, Coil Reversible, VENSIL Cone Length mm 0689 & & / C-9 Condensers, Jacketed Coil, VENSIL Joint Length mm / C-0 Condenser, Jacketed Coil, Vertical, VENSIL Cone Length mm 069 / 9.80 C-9 9 C-0

52 Condensers Coil C- Condensers, Coiled Distillate, VENSIL Joint Length mm C- Condensers, Independent Double Coil, VENSIL C- C- Joint Length mm C- Condensers, Combined Double Coil, VENSIL Joint Length mm / 9/ / / C- Condenser, Triple Coil, VENSIL C- Joint Length mm 0706 /0 C

53 Condensers Coil VENSIL C- Condensers, Inland Revenue (THORPE), VENSIL Joint Length mm C-6 Condenser, Ether, VENSIL 0709 Socket Cone Length mm C-7 Condenser, Vertical Distillate, VENSIL Cone Height mm 07 / C C-8 Condenser, Immersion (COLD FINGER), VENSIL Cone Length mm 07 0 C C-7 C-8

54 Condensers Double Surface C-9 Condensers, Double Surface (DAVIES), VENSIL Joint Length mm / C-0 Condensers, Double Surface (DAVIES), Vertical, VENSIL C-9 Joint Length mm / / 0/8 /0 / C

55 Condensers Bulb VENSIL C- Condensers, Allihn, VENSIL Joint Length mm C- Condensers, Allihn, Vertical, VENSIL Cone Length mm / / 0/8 /0 / C- C-

56 Columns Chromatography C- Chromatography Columns, Plain, VENSIL Bore mm Length mm C- Chromatography Columns, Plain with Stopcock, VENSIL C- Bore mm Length mm C- C- Chromatography Columns, Plain with Stopcock (PTFE PLUG), VENSIL Bore mm Length mm C-6 Columns, Chromatography, Plain with Screwcock, VENSIL Bore mm Length mm C- C

57 Columns Chromatography VENSIL C-7 Chromatography Columns with Sintered Disc, VENSIL Bore mm Length mm C-8 Chromatography Columns, with Sintered Disc and Stopcock, VENSIL Bore mm Length mm As specified by ISI C-7 C-8 C-9 Chromatography Columns, with Sintered Discand Stopcock (PTFE PLUG), VENSIL Bore mm Length mm C-0 Columns, Chromatography with Sintered Disc and Screwcock, VENSIL Bore mm Length mm C-9 C-0

58 Columns Fractionating C- Fractionating Columns, Vigreux, VENSIL Socket Cone Length mm 9/ 9/ 9/ 9/ C- Fractionating Columns, Plain, VENSIL Socket Cone Length mm 9/ / 9/ / C- Fractionating Column, Vacuum-Jacketed, Vigreux, VENSIL Jacket Length mm Cone Size Socket Size To fit Socket Dia. mm 9/ / 0/ C- C- C- Packing Supports, VENSIL C C- Raschig Rings for Packing, VENSIL C- C Dia. mm Length mm ** withdrawn 6

59 Columns Chromatography VENSIL C-6 Chromatography Columns, with IntegralSinter, VENSIL Bore mm Length mm Socket Size Cone Size / / / C-7 Chromatography Columns,with Integral Sinter and Stopcock, VENSIL Bore mm Length mm Socket Size Cone Size / / / C-8 Spray for Chromatography, VENSIL C-6 C C-8 7

60 Cylinders Stoppered C-9 Measuring Cylinders, Stoppered, Class B, VENSIL B 0 Sub-dvn. Tol ± C-9 C- Measuring Cylinders, Stoppered, Class A, VENSIL Short line graduations and one-point works certificate. A 0 Sub-dvn. Tol ± C- C- Measuring Cylinders, Stoppered, Class A, VENSIL Long line graduations and two-point works certificate. A 0 Sub-dvn. Tol ± C

61 Cylinders Spout VENSIL C- Measuring Cylinders, with Spout, Class B, VENSIL Sub-dvn. Tol ± B C- C- Measuring Cylinders, with Spout, Class A, VENSIL Short line graduations and one-point works certificate. Sub-dvn. Tol ± A C- C- Measuring Cylinders, with Spout, Class A, VENSIL Long line graduations and two-point works certificate. Sub-dvn. Tol ± A C- 9

62 Cylinders Suspensibility etc. C- Measuring Cylinders, with Screwcap, Detachable Plastic, Hexagonal Base, Class B, VENSIL B 0. Subdvn. Screwcap Tol ± size B C-6 Measuring Cylinders,with Spout, Detachable Plastic Hexagonal Base,Class B, VENSIL 60 C Sub-dvn. Tol ± C-6 C-7 Measuring Cylinders for Suspensibility Test, VENSIL Description Capacity with stopper. The distance between 0 and marks shall be ± mm. There shall be an extra mark at to easy withdrawal of nine-tenths of the suspension C-7

63 Cylinders, Dishes VENSIL C-8 Nessler Cylinders, VENSIL Description Tol ±, single, single marked at, 0, single 0, single marked at, 0, in matched pairs 0, in matched pairs C-8 B C-9 Crow Receivers, Class B, VENSIL 80 Tol ± 0 & & & C-60 Crow Receivers, Class A, with Works Certificate, VENSIL A Tol ± & & & C C-60

64 Flasks Round Bottom F- Round Bottom Flasks, Short Neck, VENSIL F- Socket / / 9/ / / / 9/ / / / 9/ / /0 / / / /0 9/ / /0 / / / /0 / ** Joints and s available on request

65 Flasks Round Bottom VENSIL F- Round Bottom Flasks, Medium Neck, VENSIL Socket / 9/ 9/ / 9/ / / F- F- Round Bottom Flasks, Long Neck, VENSIL Socket / 9/ 9/ 9/ F-

66 Flasks Round Bottom, Multi Necks F- Round Bottom Flasks, Two Necks, Centre Neck and One Angled Side Neck, VENSIL F- Centre Socket Side Socket / / / F- Round Bottom Flasks, Three Necks, Centre Neck and Two Angled Side Necks, VENSIL F- Socket Centre Socket Side 9/ 9/ 9/ 9/ / / / / ** Joints and s available on request

67 Flasks Round Bottom, Multi Necks VENSIL F-6 Round Bottom Flasks, Two Necks, Centre Neck and One Parallel Neck, VENSIL. Centre Socket Side Socket / 9/ F-7 Round Bottom Flasks, Three Necks, All Necks Parallel, VENSIL Centre Socket Side Socket / 9/ 9/ 9/ 9/ 9/ / / /0 /0 9/ 9/ / / /0 /0 / / /0 /0 / / /0 /0 ** Joints and s available on request F-6 F-7

68 Flasks Flat Bottom F-8 Flat Bottom Flasks, Short Neck, VENSIL F Socket / / 9/ / 9/ / 9/ / 9/ / 9/ / 9/ / F-9 Flat Bottom Flasks, Medium Neck, VENSIL F m Socket / 9/ 9/ 9/ 9/ 9/

69 Flasks Kjeldahl VENSIL F- Kjeldahl Flasks, Long Neck, VENSIL Socket F-7 Flasks, Evaporating, For Rotary Evaporators, VENSIL Socket / 9/ 9/ 9/ 9/ F F-7 F-7 Flasks, Flanged, For Rotary Evaporators, VENSIL F-7 7

70 Flasks Conical F- Conical Flasks, VENSIL F Socket /9 /9 /9 9/ 9/ / 9/ / 9/ / 9/ / F- Filter Flasks, Light Walled, VENSIL F Socket / 9/ 9/ / F-6 Filter Flasks, Heavy Walled, VENSIL F-6 Socket / 9/ 9/ /

71 Flasks Iodine & Stoppered VENSIL F-7 Iodine Flasks, Cup Shaped, VENSIL Joint F-8 Iodine Flasks B.S. Type, VENSIL Joint F-7 F-9 Stoppered Conical Flasks, VENSIL Joint / / 9/0 9/0 / / / / F-8 F-0 Conical Flasks, with Screwcap, VENSIL Screwcap size F F-0

72 Flasks Micro F- Pear Shaped Flasks, Single Neck, VENSIL F- Socket /9 /9 / F- Pear Shaped Flasks, Two Necks, Centre Neck and One Angled Side Neck, VENSIL 7 Centre Socket Side Socket 6.0 F- F- Pear Shaped Flasks, Distillation, VENSIL Socket Cone F- Pear Shaped Flasks, Claisen, VENSIL F Socket Cone 0 /9 / F- 60

73 Flasks Micro VENSIL F- Boiling Flasks, Round Bottom, VENSIL ** F-6 Conical Flasks, Erlenmeyer, Narrow Mouth, VENSIL F- ** F-6 F-7 Kjeldahl Flasks, Round Bottom, Long Neck, VENSIL F-8 Distillation Flasks, VENSIL F F-9 Micro Round Bottom Flasks, Short Neck, VENSIL Socket /9 /9 ** Please refer Page No.78 for bigger sizes 6 F F-9

74 Flasks Volumetric F-0 Volumetric Flasks, Class B, VENSIL B F Stopper size Tol ± / / / / / / / / / / / / 9/0 9/0 9/ F- Volumetric Flasks,Class A, with Works Certificate, VENSIL A F Stopper size Tol ± / / / / / / / / / / / / 9/0 9/0 9/ ** See page 80 for flasks conforming to USP Class A 6

75 Flasks Volumetric VENSIL F- Volumetric Flasks, with Screwcap, Class B VENSIL Screw-cap size Tol ± B F- F- Volumetric Flasks, with Screwcap, Class A with Works Certificate, VENSIL Screw-cap size Tol ± A F- F- Volumetric Flasks, Wide Neck, Class B, VENSIL Stopper size Tol ± / / / B F- 6

76 Flasks Graduated F- Sugar Flasks, with Two Marks, Class B, VENSIL B Marked at Tol ± 0 00 & 0 & 00 & F-6 Sugar Flasks, with Two Marks, Class A, with Works Certificate, VENSIL F- Marked at Tol ± & 0 & 00 & F-7 Kohlrausch Flasks, Class B, VENSIL A F Tol ± F-8 Kohlrausch Flasks, Class A, with Works Certificate, VENSIL B F Tol ± A F

77 Flasks Graduated VENSIL F-9 Saybolt Viscosity Flask,VENSIL Height mm F-0 Le Chatelier Flask, VENSIL F-9 Description For specific gravity test - bulb capacity approx.. neck graduated from 0 to and 8 to in divisions F- Phenol Flasks, VENSIL Bulb cap. Neck cap Subdvn. Tol ± F-0 Note :66 & 67 shall have conical bottom. F- Chapman Flask, VENSIL 68 Description For specific gravity test - contains 00 in lower bulb and 7 in upper bulb. Neck is graduated from 7 to in divisions F- 00 F- 6

78 Funnels Filter F- Funnel with Thistle Head, VENSIL 69 Stem Dia x Length mm 7 x F- Filter Funnels, VENSIL F- Dia. mm F- Funnels, Short Stem (FOR POWDER), VENSIL F Dia. mm F-6 Filter Pump, VENSIL Description F- 77 University college pattern F

79 Funnels Separating VENSIL F-7 Separating Funnels, Cylindrical, VENSIL F-8 Separating Funnels, with PTFE Plug, Cylindrical, VENSIL F-7 F-9 Separating Funnels, Cylindrical, with Screwcock and Screwcap, VENSIL 9 9. Screwcap size Screwcock size 0 0 GP GP F F- Separating Funnels, Cylindrical, Graduated, VENSIL F-9 F- Separating Funnels, with PTFE Plug, Cylindrical Graduated, VENSIL F- NOTE : The Screwcocks are patented. F- 67

80 Funnels Separating F- Separating Funnels, Spherical, VENSIL F- Separating Funnels, with PTFE Plug, Spherical, VENSIL F- F F- Separating Funnels, Cylindrical, Open Top, VENSIL F

81 Funnels Separating VENSIL F- Separating Funnels, Conical, VENSIL F-6 Separating Funnels, with PTFE Plug, Conical, VENSIL F- F-7 Separating Funnels,Conical, with Screwcock and Screwcap, VENSIL Screwcap Screw. size cock size 6 60 GP GP GP GP GP GP F-8 Separating Funnels, Conical Graduated, VENSIL F-6 F-7 F-9 Separating Funnels, with PTFE Plug, Conical, Graduated, VENSIL F-8 NOTE : The Screwcocks are patented. F-9 69