Manufacturer of Laboratory & Industrial Glasswares

We are Green

Precision Introduced In Glass Blowing

                                                     Under Roof Of

Lord Krishna Scientific Glasswares

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QUALITY POLICY

With the vision of bringing precision in glass Blowing Technology, We mainly concentrates on quality products.Our first concern is about quality of products so to make it true we palnted various semiautomatic machinaries in our plant i.e. uniform thickness of glass blown items, Precision testing of Volumetric Glasswares , Vaccum packing to check dust.


To fulfillment the requirement according to customers we setup the benchmarks to verify quality of products.In glassware production, our main concern is to use Schott glass tubing as it has best thermal resistance compared to other brands.


We believes in delivering world class quality to all its clients globally and is recognised in International market for a quality brand.


"KRISHNA"  brand is ISO 9001 - 2000 / 9001 -2008 certified company engaged in fabrication and supplying of standard and custom made laboratory glassware, scientific glassware and borosilicate glass that withstand various  laboratory conditions. Each product is thoroughly monitored to meet the most stringent specifications.

 

All Blowers appointed in our palnt are well trained professionals who have great caliber to blow glass right to standards.

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History

Borosilicate glass was first developed by German glassmaker Otto Schott in the late 19th centuryand sold under the brand name "Duran" in 1893. After Corning Glass Works introduced Pyrex in 1915, the name became a synonym for borosilicate glass in the English-speaking world.The European manufacturer of Pyrex, Arc International, uses borosilicate glass in its Pyrex glass kitchen products.

Borosilicate Glass

Borosilicate glass is widely used for laboratory glassware, either mass produced or as custom made. Borosilicate glass has excellent thermal properties with its low coefficient of expansion and high softening point, it also offers a high level of resistance to attack from water, acids, salt solutions, organic solvents and halogens. Resistance to alkaline solutions is moderate and strong alkaline solutions cause rapid corrosion of the glass, as does Hydrofluoric acid and hot concentrated Phosphoric acid.

Chemical Composition

Physical Properties

SiO2 = 80.6%

Coefficient of expansion (20°C–300°C) 3.3 x 10-6 K-1

B2O3 = 13.0%

Density 2.23g/cm3

Na2O = 4.0%

Refractive index (Sodium D line) 1.474

Al2O3 = 2.3%

Dielectric constant (1MHz, 20°C) 4.6

Optical Information

Specific heat (20°C) 750J/kg°C

Refractive index (Sodium D line) = 1.474

Thermal conductivity (20°C) 1.14W/m°C

Visible light transmission, 2mm thick glass = 92%

Poisson’s Ratio (25°C – 400°C) 0.2

Visible light transmission, 5mm thick glass = 91%

Young’s Modulus (25°C) 6400 kg/mm2

 

Our Laboratory Glassware products are an important part of scientific laboratories wherever the highest quality is required. Our borosilicate glass has a low coefficient of expansion, for resistance to heat, and a very high resistance to chemical attack. Our graduated items are calibrated to meet either Class A or Class B tolerances for use when accuracy is demanded.