The production and packaging are made of ultra-clean polypropylene (PP) material in 100,000 grade clean workshop. Workshop environment in accordance with the national standard, ISO and CE standards for strict management and control, to ensure that there is no enzyme and heat source pollution. The whole line of products is confirmed to be free from biological contamination (such as biological endotoxin, DNA lyase, RNA lyase and other biological heat source pollutants, etc.), which can be used in various molecular laboratories. The super high precision standard mold casting makes the suction head in the assurance can be adapted to various brands of pipetting gun common in the market, providing users with more flexible pipetting solutions.