1. Material:

The suction heads on the market are basically made of polypropylene plastic. High quality headers are usually made of natural polypropylene, while low cost headers are most likely made of recycled polypropylene plastic. In addition, most suction heads in the manufacturing process will also add a small number of additives, the more common additives are: a, color material; B. Release agent. We try to choose pipette suction with less additives in the selection.

2. Packaging:

The main forms of packaging are bags and boxes. Bagging means putting the suction heads in plastic ziplock bags of 500 or 1000 pieces each. Most users will buy a bag in the suction head, and then manually put the suction head into the suction box, in the process of second increase the chance of contamination of the suction head. In recent years, there has also been a supplement (8 or 10 plate head stacked into a tower, can not contact the head and quickly put the head into the head box), the head needs less storage space, reduce the use of plastic, so as to achieve the purpose of environmental protection.