What Is The Performance Of Plastic Reagent Bottles?

With the continuous expansion of the application range of various polymer materials, Plastic Reagent Bottle is gradually and widely used in the storage of chemical reagents. Polypropylene (PP) and high-density polyethylene (HDPE) are two commonly used materials in plastic reagent bottles, so what is the difference in performance between these two materials?

 

1. Tolerant temperature, since the embrittlement temperature of HDPE is -100°C, and the embrittlement temperature of PP is 0°C, so when the product needs to be stored at low temperature, more reagent bottles made of HDPE materials are used, such as for storage in diagnostic reagents 2 Buffer buffer solution at -8°C and enzyme reagent bottle at -20°C; for products that require high-temperature storage, PP materials should be selected.

2. Transparency, PP is more transparent than HDPE, which is more conducive to observing the state of the materials stored in the bottle. However, the transparent PP bottles currently on the market are all made of transparent agents, so you need to pay attention when choosing PP material reagent bottles.

 

3. Sterilization method. The difference between HDPE and PP in terms of sterilization methods is that PP can be sterilized under high temperatures and high pressure, but HDPE cannot. Both can be EO sterilized and irradiated yellowing) and disinfectant sterilization.

 

4. Chemical corrosion resistance. Both HDPE and PP materials are resistant to acid and alkali at room temperature, but the anti-oxidation performance of HDPE material is better than PP. Therefore, when storing oxidative materials, HDPE material reagent bottles should be used; aliphatic hydrocarbons, aromatic hydrocarbons Low molecular weight solvents such as chlorinated hydrocarbons and chlorinated hydrocarbons can soften polypropylene and make it swell, so plastic reagent bottles made of HDPE should be used to store organic solvents such as benzene rings, n-hexane, and chlorinated hydrocarbons.

 

5. Toughness and impact resistance. Polypropylene (PP) has excellent bending fatigue resistance, but poor impact resistance at low temperatures. The drop resistance of HDPE material reagent bottles is much better than that of PP material reagent bottles, so low-temperature storage is not suitable for PP material bottles. Whether it is a polypropylene reagent bottle or a high-density polyethylene reagent bottle, there are suitable chemical reagent types for installation according to the characteristics of the material. When choosing a reagent bottle, the physical properties of the chemical reagent should be considered.