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Liquid Solid Extraction involves the elution of a solid sample with pure solvent vapour. The sample is held in the extractor body either directly or in a thimble. The siphoning type of Soxhlet Extractor finds the widest application in laboratory work. BOROSIL® Brand Soxhlet Extraction Apparatus are available in three sizes. The Component parts of the apparatus are provided with interchangeable joints for added flexibility.
Extraction Apparatus
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All laboratories must be equipped with flasks of different types. We offer a wide range of flasks, boiling, culture, distilling, erlenmeyer, filtering, iodine and kjeldahl - for a variety of applications to meet customer?s requirements. BOROSIL® Brand flasks are designed to give the best combination of thermal shock resistance, physical strength and resistance to chemical attack. They are made to withstand the demands of the modern laboratory. The flasks with interchangeable joints (single, 2neck, 3neck) are particularly suitable for all glass apparatus assemblies. We offer the interchangeable joints most commonly specified for a particular capacity. Adapters Cat. No. 8800 and 8820 can be used to connect flasks with one size joint to any other apparatus having another size joint.
Flask
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Volumetric flasks are built with customers requirements in mind. They conform to tight capacity tolerances and assure accurate reproducible results. The flasks have built- in strength too. The flask body is specially blown and accurate bore tubing is used for the neck. And above all, you have interchangeable solid glass stoppers for durability and convenience. In capacities from 1 ml to 5000 ml, BOROSIL® brand volumetric flasks are available in Class A accuracy, certified by us and Class B accuracy for general purpose work.
Flasks Volumetric
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Funnels may be used to separate solids from liquids, liquids from liquids and occasionally for pouring something into a container. BOROSIL® brand funnels are available in a comprehensive range for a variety of such applications. Sintered glass funnels are also available. Separating funnels come in globe and pear shapes with solid ground glass, PTFE and BOROFLO stopcocks and interchangeable solid glass stoppers. These funnels are made from specially moulded blanks. Stopcock bores, body openings and stems are carefully aligned to provide smooth, even liquid flow with fast cut-off. The sturdy design of BOROSIL® brand funnels make them excellent for rack work.
Funnel
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It is a rapid inexpensive and effective apparatus to produce controllable amount of common gases such as hydrogen sulphide, carbon dioxide, etc. It is quickly charged and assembled and simple to operate.
Gas Generator
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For those who fabricate and assemble their own apparatus, we offer BOROSIL® Brand Ground Glass Conical Joints. These are precision ground high quality interchangeable joints suitable for rapid and convenient assembly of apparatus for majority of laboratory applications. BOROSIL® Brand Ground Joints are manufactured from medium wall uniform tubing and careful attention is paid to accuracy of form, uniformity of surface finish, profile and taper to reduce the possibility of leakage and joint ?seizure?. The outer joints have extra glass tooled onto rims to add a chip resistance. All BOROSIL® brand Ground Joints are triple tested for proper taper control, for mating and for vacuum. The taper is as required by Bureau of Indian Standard Specifications.
Ground Joint
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BOROSIL® Brand glass jars serve a variety of applications in Education and Research. Bell Jars are suited for high vacuum work and as spares for vacuum coating units, Fermentation jars for microbial fermentations in Research and Development, Museum Jars for storing and displaying valuable specimens and also for chromatography work. The excellent resistance to chemical attack and good optical clarity of BOROSIL® brand jars make them the most obvious choice.
Jars
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BOROSIL® brand resin reaction kettles are designed for organic reactions involving viscous materials. The wide mouth permits easy access to the interior for cleaning purposes. Covers are of heavy construction and lower sections are mould blown for maximum resistance to mechanical breakage. Covers are provided with openings with interchangeable joints for rapid assembly with condensers, stirrers etc. Flanges of covers and bottoms are finely ground for a tight seal.
Kettles
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BOROSIL® brand pipettes are manufactured from specially selected machine-drawn borosilicate accurate bore glass tubing. They have precision formed jets, bevel ground ends to resist chipping. The graduation marks are in durable white enamel or amber stain, resistant to normal laboratory reagents and repeated washing. All the pipettes are individually measured and then marked. Due to uniformity of bore, accuracy is ensured between any two readings. The pipettes can be autoclaved and, if necessary, can be flamed for sterilisation. Cat no. 7059, 7060, 7079 and 7080 are colour coded on top according to I.S.O. Standards to facilitate easy identification. The Graduation marks are screen printed. The OD of pipettes size 5 ml and above are tooled with uniform OD and ID for easy sucking and cotton plugging. This tooling also gives added strength.
Pipettes
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TECHNICAL DATA Borosil Brand sintered glassware is used for the filtration of liquids and gases in the laboratory. It incorporates a porous glass disc as a filter media, which is non corrosive and reusable. It is also used for gas washing, dispersion and absorption. Sintered disc is manufactured by crushing Borosil brand glass, powdering, cleaning, separating into various mesh sizes and then fusing together in the form of a disc. The sintered disc is graded into 5 grades -G1, G2, G3, G4 and G5. The grades are classified by maximum pore size, which is obtained by measuring pressure at which the first air bubble breaks away from filter under certain conditions. The pressure differential is then used to calculate the equivalent capillary diameters in microns. The desired pore size is obtained by suitably controlling the grain size, firing time, temperature and the thickness of the disc. Each disc is tested and graded individually. The pore diameters are reasonably uniform, which ensures required flow rate through the filter. The flow rate further depends on pressure differential between the two sides of the disc, free area of the disc, viscosity of the fluid being filtered, etc. Between different discs of same size and grade, there is a fair amount of uniformity in pore size and hence the results from two or more discs of the same size and grade will be uniform. This ensures reproducible analytical results. The discs have maximum surface hardness and hence glass powder does not get scraped off during cleaning or with chemicals. Filters do not shed particles during usage. The discs are sealed to tubing without blocking the pores. Then they are annealed properly in automatically controlled lehrs.
Sintered Ware
VIEW DETAILS
Stopcocks are available for both general purpose and high vacuum work. We now offer a bigger range to serve you better. BOROSIL® brand stopcocks are manufactured to extremely high standards of quality which ensure uniform surface finish and accuracy of profile and which guarantee high efficiency and reliability. They are individually lapped and it is essential that stoppers and barrels are always correctly paired.
Stopcock
VIEW DETAILS
BOROSIL® brand stoppers are made to precision standards with uniform taper control and surface finish. They are fully interchangeable and ensure positive sealing.
Stoppers
VIEW DETAILS

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Watch GlassesQuartz WareTubes Test & CultureAdaptersStoppersStopcockSintered WarePipettesKettlesJarJarsGround JointsGround JointGas GeneratorsGas GeneratorFunnelFlasks VolmetricFlaskExtraction ApparatusDrying TrayDistilling ApparatusDishesDesiccatorsCylindersConesCondensersBurettesBottlesBEAKER
Liquid Solid Extraction involves the elution of a solid sample with pure solvent vapour. The sample is held in the extractor body either directly or in a thimble. The siphoning type of Soxhlet Extractor finds the widest application in laboratory work. BOROSIL® Brand Soxhlet Extraction Apparatus are available in three sizes. The Component parts of the apparatus are provided with interchangeable joints for added flexibility.
View Details
Extraction Apparatus
All laboratories must be equipped with flasks of different types. We offer a wide range of flasks, boiling, culture, distilling, erlenmeyer, filtering, iodine and kjeldahl - for a variety of applications to meet customer?s requirements. BOROSIL® Brand flasks are designed to give the best combination of thermal shock resistance, physical strength and resistance to chemical attack. They are made to withstand the demands of the modern laboratory. The flasks with interchangeable joints (single, 2neck, 3neck) are particularly suitable for all glass apparatus assemblies. We offer the interchangeable joints most commonly specified for a particular capacity. Adapters Cat. No. 8800 and 8820 can be used to connect flasks with one size joint to any other apparatus having another size joint.
View Details
Flask
Volumetric flasks are built with customers requirements in mind. They conform to tight capacity tolerances and assure accurate reproducible results. The flasks have built- in strength too. The flask body is specially blown and accurate bore tubing is used for the neck. And above all, you have interchangeable solid glass stoppers for durability and convenience. In capacities from 1 ml to 5000 ml, BOROSIL® brand volumetric flasks are available in Class A accuracy, certified by us and Class B accuracy for general purpose work.
View Details
Flasks Volumetric
Funnels may be used to separate solids from liquids, liquids from liquids and occasionally for pouring something into a container. BOROSIL® brand funnels are available in a comprehensive range for a variety of such applications. Sintered glass funnels are also available. Separating funnels come in globe and pear shapes with solid ground glass, PTFE and BOROFLO stopcocks and interchangeable solid glass stoppers. These funnels are made from specially moulded blanks. Stopcock bores, body openings and stems are carefully aligned to provide smooth, even liquid flow with fast cut-off. The sturdy design of BOROSIL® brand funnels make them excellent for rack work.
View Details
Funnel
It is a rapid inexpensive and effective apparatus to produce controllable amount of common gases such as hydrogen sulphide, carbon dioxide, etc. It is quickly charged and assembled and simple to operate.
View Details
Gas Generator
For those who fabricate and assemble their own apparatus, we offer BOROSIL® Brand Ground Glass Conical Joints. These are precision ground high quality interchangeable joints suitable for rapid and convenient assembly of apparatus for majority of laboratory applications. BOROSIL® Brand Ground Joints are manufactured from medium wall uniform tubing and careful attention is paid to accuracy of form, uniformity of surface finish, profile and taper to reduce the possibility of leakage and joint ?seizure?. The outer joints have extra glass tooled onto rims to add a chip resistance. All BOROSIL® brand Ground Joints are triple tested for proper taper control, for mating and for vacuum. The taper is as required by Bureau of Indian Standard Specifications.
View Details
Ground Joint
BOROSIL® Brand glass jars serve a variety of applications in Education and Research. Bell Jars are suited for high vacuum work and as spares for vacuum coating units, Fermentation jars for microbial fermentations in Research and Development, Museum Jars for storing and displaying valuable specimens and also for chromatography work. The excellent resistance to chemical attack and good optical clarity of BOROSIL® brand jars make them the most obvious choice.
View Details
Jars
BOROSIL® brand resin reaction kettles are designed for organic reactions involving viscous materials. The wide mouth permits easy access to the interior for cleaning purposes. Covers are of heavy construction and lower sections are mould blown for maximum resistance to mechanical breakage. Covers are provided with openings with interchangeable joints for rapid assembly with condensers, stirrers etc. Flanges of covers and bottoms are finely ground for a tight seal.
View Details
Kettles
BOROSIL® brand pipettes are manufactured from specially selected machine-drawn borosilicate accurate bore glass tubing. They have precision formed jets, bevel ground ends to resist chipping. The graduation marks are in durable white enamel or amber stain, resistant to normal laboratory reagents and repeated washing. All the pipettes are individually measured and then marked. Due to uniformity of bore, accuracy is ensured between any two readings. The pipettes can be autoclaved and, if necessary, can be flamed for sterilisation. Cat no. 7059, 7060, 7079 and 7080 are colour coded on top according to I.S.O. Standards to facilitate easy identification. The Graduation marks are screen printed. The OD of pipettes size 5 ml and above are tooled with uniform OD and ID for easy sucking and cotton plugging. This tooling also gives added strength.
View Details
Pipettes
TECHNICAL DATA Borosil Brand sintered glassware is used for the filtration of liquids and gases in the laboratory. It incorporates a porous glass disc as a filter media, which is non corrosive and reusable. It is also used for gas washing, dispersion and absorption. Sintered disc is manufactured by crushing Borosil brand glass, powdering, cleaning, separating into various mesh sizes and then fusing together in the form of a disc. The sintered disc is graded into 5 grades -G1, G2, G3, G4 and G5. The grades are classified by maximum pore size, which is obtained by measuring pressure at which the first air bubble breaks away from filter under certain conditions. The pressure differential is then used to calculate the equivalent capillary diameters in microns. The desired pore size is obtained by suitably controlling the grain size, firing time, temperature and the thickness of the disc. Each disc is tested and graded individually. The pore diameters are reasonably uniform, which ensures required flow rate through the filter. The flow rate further depends on pressure differential between the two sides of the disc, free area of the disc, viscosity of the fluid being filtered, etc. Between different discs of same size and grade, there is a fair amount of uniformity in pore size and hence the results from two or more discs of the same size and grade will be uniform. This ensures reproducible analytical results. The discs have maximum surface hardness and hence glass powder does not get scraped off during cleaning or with chemicals. Filters do not shed particles during usage. The discs are sealed to tubing without blocking the pores. Then they are annealed properly in automatically controlled lehrs.
View Details
Sintered Ware
Stopcocks are available for both general purpose and high vacuum work. We now offer a bigger range to serve you better. BOROSIL® brand stopcocks are manufactured to extremely high standards of quality which ensure uniform surface finish and accuracy of profile and which guarantee high efficiency and reliability. They are individually lapped and it is essential that stoppers and barrels are always correctly paired.
View Details
Stopcock
BOROSIL® brand stoppers are made to precision standards with uniform taper control and surface finish. They are fully interchangeable and ensure positive sealing.
View Details
Stoppers

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