Email:huida@huidamedical.com.cn Jiangsu Huida Medical Instruments Co.,Ltd

Jiangsu Huida Medical Instruments Co.,Ltd

Laboratory Glass

Introduction to glass

No material can all test requirements are met. Use glass or plastic product depends on application and design, you need to consider the special nature of the material, of course, cost.

General properties of glass

Main chat of glass is silica sand (SiO2) and boric acid (H3BO3) or Borax (Na2B4O7 10H2O), lime (CaO), glass (cullet), phosphoric acid (P2O5) and alkaline (Ha2O, provided by NaNO3, Na2B4O7) and others, such as potassium, magnesium, 鋅, aluminum oxide material.

Glass for water, saline solutions, acids, alkalis and organic solvents has good chemical resistance, and from this point of view than the majority of plastic products. Only hydrofluoric acid and under temperature conditions of strong or concentrated phosphoric acid will attack the glass. Glass is another feature of the stability of shape (even under elevated temperature conditions), as well as highly transparent.

Specific special properties of glass

Laboratory applications, there are many different properties of different types of glass can be choices.

Sodium-calcium glass

Sodium-calcium glass (such as AR-Glas) has good chemical and physical properties. Suitable for short time exposure to chemical reagents and limited application of thermal shock.

Borosilicate glass (BORO3.3,BORO5.4)

With excellent chemical and physical properties of borosilicate glass. As described in the international standard DIN ISO 3585, hydrolytic glass level coefficient of linear expansion 3.3, for applications that require excellent chemical resistance and heat resistance (including resistant to thermal shock), as well as high mechanical stability of the application. Is a typical glass for chemical apparatus, such as round-bottom flasks and beakers and measuring products.


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