During the use of the thermal desorption instrument, it is inevitable that the needle may break. Here are the specific operating methods:

Pay attention to the tapered direction of the copper pad facing the needle tip, with the needle tail extending about 1 millimeter beyond the copper pad. You can first gently tighten the nut to prevent the copper pad from sliding, then adjust the distance from the needle tail to 1 millimeter with pointed nose pliers, and then tighten it to prevent air leakage. The needle tip should not exceed the needle guide plate. The installation method of the lower needle is the same as that of the upper needle, but in the opposite direction.

warningIt must be operated with power off to prevent finger injury caused by instrument misoperation.