LOW EXPANSION BOROSILICATE GLASS

From the 16th Century to today, chemical research teams have used glass containers for a very basic reason the glass containers is transparent, almost invisible. And so the contents and the reaction are clear visible, But because chemists music heat, cool and mix chemical substances, ordinary glass is not always adequate or laboratory works.

Laboratory works requires apparatus made in a glass - which can readily be mould ed into any desired shape or from which offers maximum inertness when in contact with the widest range of chemical substances, which can withstand thermal shock with fracture and high temperature work without deforming, and which will be resilient enough to survive the everyday knocks to which it will be subjected in normal laboratory handling, washing and sterilizing processes.

Chemical Composition

glacierlab Glassware is a low alkali borosilicate composition. Its typical chemical composition is given under. It is virtually free of magnesia-lime-Zinc group and contains only traces of heavy metals.

Thermal Properties

As the Coefficient of thermal expansion of Borosilicate glass is low, the thermal stresses under a given temperature gradient are
consequently low and the glass can withstand higher temperature gradients and also sudden temperature changes/thermal shocks.
Minute scratching of glass surface can however reduce its thermal resistance.

In general the 'Strain point' should be regarded as the maximum safe operating temperature of glacierlab glassware. When heated above 500° C the glass may acquire permanent stresses on cooling. All glacierlab lab ware is annealed in modern ovens under strictly controlled conditions to ensure minimal residual stress in the products.

Chemical Durability

glacierlab Glassware in highly resistance water, neutral and acid solutions, concentrated acids and their mixtures as well as to chloride, bromine, iodine, and organic matters. Even during extended period of reaction and at temperatures above 100° C, its chemical resistance exceeds tha of mot metals and other materials. It can withstand repeated dry and wet sterilisation without surface deterioration and subsequent contamination. Resistance to attack of various chemicals is shown under. Only hydroflioric acid, very hot phosphoric acid and alkaline solutions increasinglly attack the glass surface with rising concentration and temperature.

Fabrication with Borosilicate Glass

Due to low expansion of glass and easy workability, this glass can be shaped, formed, joined into complicated apparatus. It can be done even by an analyst in his own laboratory. He can keep on changing till he gets what he needs. In case where annealing in a controlled oven is difficult he can do so b flame annealing which is also great advantage.

Optical Properties

Laboratory glassware made form Borosilicate Glass shows no noticeable absorption in the visible region of the spectrum. It appear consequently clear and colourless.

PACKING

Trained staff under the supervision of very technically experienced supervisors does all the packing. During the packing process every product is checked personally by the supervisors in all parameters then only the packing staff packs the material. It is also kept in mind Using Cotton Gloves that not even a finger touch sign is left on the product while packing. As the Glassware is a fragile item all the
packing is done in White Die-Cut Boxes as per international Standards to avoid breakage. After Packing labels of every item is pasted on
the box for ready reference. Material is again checked after packing to minimize the breakage chances. We don’t use wooden material
like wooden box, Wood wool and cheap packing material as it is unhygienic and is banned in few of the countries also. After packing a
box is covered with a plastic film to protect the box from atmospheric change.