How to choose the right match from among the many reagent bottles
**Author:Orginal from Internet
Among the many reagent bottles: how to choose the right match?
Reagent bottles can be categorised as glass or plastic bottles based on their size, and as bottles for solid or liquid reagents based on the substance they contain, whilst solid reagent bottles and narrow-necked bottles are used to hold liquids. The interior of the bottles features a frosted finish to maintain a seal and prevent reagents from leaking. Nowadays, plastic bottles are increasingly being used and are gradually replacing glass bottles. The material chosen for plastic bottles is highly transparent polypropylene, which is non-toxic and odourless.
It has a low density and superior strength, rigidity, hardness and heat resistance compared to low-pressure polyethylene, and can be used at temperatures of around 100°C. It possesses excellent insulating properties and high-frequency insulation, is unaffected by humidity, but becomes brittle at low temperatures, is not wear-resistant and is prone to ageing. It is virtually unaffected by common acids, alkalis and other organic solvents.
Characteristics of biochemical reagent bottles:
1. As alkaline substances or water glass react with the silica in glass, the dripping time is prolonged. Keep the dropper perpendicular to the top of the container. Avoid tilting it. Never stand it upside down. Do not insert it into the container. Do not touch the container walls, except when drawing up the solution.
2. Place the reagent bottle with the mouth facing downwards into a beaker containing hot water. Ensure it is smooth, free from sharp edges and non-sticky. The pipette must not come into contact with other objects to prevent contamination by impurities. Do not use a single pipette for multiple purposes. Ordinary pipettes must be cleaned after use. Specialised pipettes cannot be cleaned and require special handling. Return them to their original reagent bottles after use.
3. After stretching, the product is packaged utilising the shrinkage properties of the plastic. It is free from sharp edges and non-sticky.
Sealing characteristics of the mouth and cap of wide-mouth reagent bottles:
1. Possesses wrapping force and the elasticity of plastic. The product is tightly and securely bound into a single unit, combining scattered small pieces into a whole. Even under adverse conditions, the product will not loosen or separate. Wait until small air bubbles appear at the bottle opening. Ordinary droppers must be cleaned after use. Liquid reagents should generally be stored in thin-walled bottles to prevent damage.
2. A glossy, protective coating is formed around the reagents, thereby providing protection against dust, oil, moisture and water.
3. After stretching, the product is packaged utilising the plastic’s retractive force, forming a compact, gap-free unit. The product trays are tightly packed together, effectively preventing the reagents from shifting or moving relative to one another during transport.