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LABORTARY TEST

 

The main plastic consumables used in the general laboratory are pipette, centrifuge tube, PCR plate, cell culture plate, cryovial tube and other plastic consumables. The suction head, PCR plate, cryovial tube and other consumables are mostly used PP material (polypropylene).Cell culture consumables are generally made of PS (polystyrene) material. Shake mediabottles are made of PETG (polyethylene terephthalate copolymer) or PC (polycarbonate).

 

 

The differences between consumable materials:

1.PS: The light transmission performance reached 90%. It has good chemical resistance to aqueous solution. It has a certain cost advantage. However, PS products are relatively brittle at room temperature. It is easy to crack or break when dropped. The continuous use temperature is about 60℃, and the maximum use temperature should not exceed 80℃

2.PP: It’s usually translucent colorless solid, odorless and non-toxic. Its main advantage is that it can be sterilized at 121℃. It has good mechanical properties and chemical resistance.Compared with PE, it has better rigidity, strength and heat resistance.

3.PC: It has good toughness and rigidity and is not easy to break. Heat resistance, radiation resistance concurrently at the same time. It meets the requirements of high temperature, high pressure disinfection and high energy radiation treatment in the biomedical field.

4.PE: Odorless, non-toxic, feel like wax, with excellent low temperature resistance (the lowest temperature can reach -100~-70°C), easy to soften at high temperature.

 

In the laboratory test, plastic bottles are mostly used to hold chemical reagents. Reagent bottle is mainly made of polyethylene or polypropylene material. It can resist the corrosion of most acid and alkali solvents. So the reagent bottle is widely used in ordinary water solution. The suitable PH range is 5.5-9.0. However, it is not suitable for strong oxidation, strong acid and alkaline liquid packaging. And it is also not suitable for strong reducing liquid packaging.

 

Plastic reagent bottles are divided into wide mouth bottles and narrow mouth bottles. The narrow mouth bottles are mainly used for testing reagents (liquid), flower foliar fertilizer and other liquid packaging. And the wide mouth bottles are mainly used for solid reagent packaging. It can also be used for tablets and capsules packaging. Some reagents are easy to decompress in the light. So it is necessary to use the brown bottles. Because brown color can not only filter out most of the visible light, but also ensure the transparency of the bottle, which let the bottle is easy to observe the capacity.

 
Common uses of laboratory bottle:
1. Chemical reagents: Chemical reagents is one of the basic uses of plastic reagent bottles. According to the different characteristic,  the reagent is divided into wide mouth bottle, small mouth bottle, brown bottle and other different types, which can contain solid reagents and liquid reagents. But generally it’s not suitable for strong oxidation, strong acid and alkaline, strong reducing liquid packaging.
 
2.IVD areas: IVD refers to the human body, through the sample to the human body, blood, body fluids, organization, etc. For testing and clinical diagnosis information, and then judge the products and services of the disease or the body function. Reagent bottles are mainly used for the packaging of test reagents in the field of in vitro diagnostics.
 
3.Plant fertilizer: Plant fertilizer generally needs to be diluted before use, so the packaging will not be too large, the requirements for packaging are mainly reflected in the material and sealing. Reagent bottle made of polypropylene or polyethylene material processing and become, can most of the acid and alkali corrosion resistance, the plastic products with a lightweight, easy to transport, as well as the low price advantage, flowers of foliar fertilizer storage requirements.
 
Chemical reagents are mainly made of polypropylene as raw materials. The transparency of the cap is better than the transparency of the bottle. And can add color master, production with color or shading reagent bottle bottle and bottle cap. In order to achieve good sealing, the cap and the bottle body can be designed with interference fit to ensure good sealing effect without gaskets. Plastic reagent bottles are mostly used for testing reagents (in vitro diagnostic reagents) and other liquid packaging. 
 
 
Polypropylene reagent bottle has the following characteristics:
1.The density is small. The density is only 0.89 to 0.91, which is one of the lighter types of plastics.
2,Excellent mechanical function. Except for impact resistance, other mechanical function indexes are better than polyethylene material. Forming production and processing characteristics are good.
3, Heat resistance. Continuous heat resistance temperature can reach 110-120℃.
4.Good chemical stability. PP material almost no water absorption, under 80℃ can resist acid, alkali, salt and a variety of organic solvents corrosion.

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