Chemical sampling pipetting device

The utility model discloses a chemical sampling pipetting device, it holds between the fingers the ball, inlays dress flange, a pair of pressurization paster, holds between the fingers ball adapter sleeve, bottleneck limiting ball, pipette main part, feed liquor pipe, containing mark line, abrasionproof thickening layer and many anti -skidding strengthening ribs to hold between the fingers ball connecting pipe, connecting grooves, rubber including rubber, connecting grooves establishes on the ball connecting pipe is held between the fingers to rubber, and rubber is held between the fingers theball and is even held between the fingers the ball adapter sleeve, inlays dress flange arch and establishes on holding between the fingers the ball adapter sleeve, inlays the dress flange and inlaysin connecting grooves, and the pressurization paster is established in the ball is held between the fingers to rubber, and anti -skidding strengthening rib is established on the ball is held between the fingers to rubber, and