Approx. % by Weight
- SiO2: 81
- B2O3: 13
- Na2O/K2O: 4
- Al2O3: 2
- Coefficient of Linear Expansion: 32.5 x 10-7 / deg C
- Strain Point: 515 deg C
- Annealing Point: 565 deg C
- Thermal Conductivity: 0.0027
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Product Details & Technical Specifications
HI SIL Glass Works has a wide range of glass products manufactured to high standards and stringent quality parameters. We manufacture conical and spherical ground joints, stop-cocks, screw-cocks, threaded tapered joints, single and multi-neck flasks, distillation and reaction components, condensers, separating and dropping funnels, extractors, reaction vessels and water distillers. We also specialize in filtration products including gooch crucibles, buchner funnels, pipeline filters, micro filtration kits, lab jacks, clamps and boss heads.
Our product range consists of diverse items, offering comprehensive glassware and related product solutions for broad laboratory and industrial requirements. HI SIL Glass has earned a strong reputation for custom-made glassware for laboratory and industrial applications.
Chemical Properties
Glassware is designed to be highly resistant to water, neutral and acidic solutions, concentrated acids and mixtures, halogens and organic materials. It withstands repeated dry and wet sterilization cycles without surface deterioration and contamination.
| Contact Chemical | Duration | Loss (mg/m2) |
|---|---|---|
| Water Distilled at 100 deg C | 6 hr | 10 |
| Water Vapour Steam at 121 deg C | 1 hr | 75 |
| Acid HCl | 6 hr | 100 |
| 80% H2SO4 at 130 deg C | 12 hr | 140 |
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