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Types of plastic containers for laboratory

The commonly used plastic containers in the laboratory include reagent bottles, test tubes, suction heads, straws, measuring cups, measuring cylinders, disposable syringes and pipettes. Plastic products have the characteristics of easy forming, convenient processing, excellent sanitary performance and low price. They are gradually replacing glass products and are widely used in scientific research, teaching and other fields.

Types of plastic products commonly used in laboratories

The main component of plastics is resin, with plasticizers, fillers, lubricants, colorants and other additives as auxiliary components. Plastic products with different structures have different properties. Plastic products that are not sensitive to biological materials, such as polyethylene, polypropylene, polymethylpentene, polycarbonate, polystyrene and polytetrafluoroethylene, are generally selected for laboratories. Chemical reagents can affect the mechanical strength, hardness, surface finish, color and size of plastic products. Therefore, the performance of each plastic product should be fully understood when selecting plastic products.

The main component of plastics is resin, with plasticizers, fillers, lubricants, colorants and other additives as auxiliary components. Plastic products with different structures have different properties. Plastic products that are not sensitive to biological materials, such as polyethylene, polypropylene, polymethylpentene, polycarbonate, polystyrene and polytetrafluoroethylene, are generally selected for laboratories. Chemical reagents can affect the mechanical strength, hardness, surface finish, color and size of plastic products. Therefore, the performance of each plastic product should be fully understood when selecting plastic products.

1. Polyethylene (PE)
Chemical stability is good, but it will be oxidized and brittle when encountering oxidant; It is insoluble in solvent at room temperature, but will become soft or expand in case of corrosive solvent; The hygienic property is the best. For example, distilled water used for culture medium is usually stored in polyethylene bottles.
2. Polypropylene (PP)
Similar to PE in structure and hygienic performance, it is white and tasteless, with small density, and is the lightest one among plastics. It is resistant to high pressure, soluble at room temperature, does not work with most media, but is more sensitive to strong oxidants than PE, is not resistant to low temperature, and is fragile at 0 ℃.
3. Polymethylpentene (PMP)
Transparent, high temperature resistant (150 ℃, 175 ℃ for a short time); The chemical resistance is close to that of PP, which is easily softened by chlorinated solvents and hydrocarbons, and is more easily oxidized than PP; High hardness, high brittleness and fragility at room temperature.
4. Polycarbonate (PC)
Transparent, tough, non-toxic, high pressure and oil resistant. It can react with alkali liquor and concentrated sulfuric acid, hydrolyze and dissolve in various organic solvents after being heated. It can be used as a centrifuge tube to sterilize the whole process in the ultraviolet sterilization box.
5. Polystyrene (PS)
Colorless, tasteless, non-toxic, transparent, and natural. Weak solvent resistance, low mechanical strength, brittle, easy to crack, heat resistant, flammable. It is commonly used for making disposable medical supplies.
6. Polytetrafluoroethylene (PTEE)
White, opaque, wear-resistant, commonly used to make various plugs.
7. Polyethylene terephthalate G copolymer (PETG)
Transparent, tough, airtight, and free of bacterial toxins, it is widely used in cell culture, such as making cell culture bottles; Radiochemicals can be used for disinfection, but high-pressure disinfection cannot be used.


Post time: Sep-27-2022