Pipettes are the most important experimental instruments in biological research, and the number of accessories used in experiments is also very large. The suction tips on the market are basically made of polypropylene plastic (colorless and transparent plastic with high chemical inertness and wide temperature range). However, with polypropylene, the quality can vary greatly: high-quality tips are generally made of natural polypropylene, while low-cost tips are likely to use recycled polypropylene plastic (in this case, how much can we Said its main ingredient is polypropylene).

In addition, most tips also add a small amount of additives during the manufacturing process, the common ones are:

1. Color material.

The blue tip (1000ul) and the yellow tip (200ul) commonly known in the market are the addition of corresponding color-developing materials to polypropylene (we hope it is high-quality masterbatch, not low-cost industrial pigments)

2. Release agent.

Helps the tip break away from the mold quickly after forming. Of course, the more additives, the higher the chance of undesired chemical reactions during pipetting. So it is better not to add additives! However, due to the relatively high requirements on the production process, there are very few tips on the market that do not add additives at all.

Pipette Tip Specifications:

10ul/20ul/100ul/200ul/1000ul

The function of the suction filter:

Because the tip filter is a disposable filter tip, the biggest role in use is to prevent cross-contamination: Unlike other filter types that contain additives that can inhibit enzymatic reactions, the filtered pipette tips supplied by Bunsen are composed of Made of pure virgin sintered polyethylene. Hydrophobic polyethylene particles prevent aerosols and liquids from being drawn into the pipette.

The filter of the tip cartridge is machine loaded to ensure complete uninterruption during the manufacturing and packaging process. They are certified free of RNase, DNase, DNA and pyrogen contamination. Additionally, all filters are radiation pre-sterilized after packaging for enhanced protection of biological samples.