Liquid crystal ion density testing device for liquid crystal material preparation

The utility model relates to the technical field of ion density testing, in particular to a liquid crystal ion density testing device for liquid crystal material preparation. According to the technical scheme, the needle comprises a stainless steel needle rod and a rod body and is characterized in that a connecting base is arranged at the bottom of the rod body, an electrifying contact is fixedly installed on the lower portion in the rod body, a supporting spring is arranged on the electrifying contact, an installing base is fixedly installed on the top of the stainless steel needle rod, and a threaded rod is fixedly installed on the top of the installing base. The power-on contact is matched with the connecting contact, the specification and the size of the needle head of the device can be replaced according to actual conditions, the functionality of the testing device is increased, the practicability is improved, the bottom positioning sleeve is matched with the lantern ring, secondary fixing can be carried