The wall pressure-resistant tube adds a small-capacity pressure-resistant tube. The pressure-resistant tubes are all made of thickened thick-walled glass tubes.

Note when using: Due to the particularity of the pressure tube and its use under different conditions, Lianhua strongly recommends that when using the pressure tube, double protection tools must be used, and protective glasses must be used in the fume hood, and Be sure to comply with the experimental safe operation procedures stipulated by the laboratory. Pressure tubes must not be used in microwave reactions.

The inner screw O-ring is an imported O-ring, which has certain corrosion resistance to polar solvents.