Plunger Seal Teflon PTFE Shimadzu LC-20AT high pressure pump

Description

Plunger Seal Teflon PTFE Shimadzu LC-20AT high pressure pump

Name: plunger rod seal ,

Item: 228-35145 ,

used for Shimadzu LC-20AT high pressure infusion pump

Plunger Seal Teflon PTFE

First, why need to replace the Shimadzu LC-20AT high pressure infusion pump plunger rod seal (228-35145)?
A: The pump plunger rod seals are vulnerable parts of the high-pressure liquid chromatography infusion pump.
High-pressure pump plunger rod requires constant reciprocating motion, after which the instrument used for a long plunger rod seal is worn. Once the plunger rod seal wear serious, it will cause closed lax in pump operation, the mobile phase liquid will leak out of the fray, leading to instability and even pressure pump does not work.
Mobile phase salt does not pay attention to timely clean plunger rod will increase the wear rate of the plunger rod. Because the mobile phase salt will be attached to the plunger rod after crystallization, fine salt crystals will be increased wear of the plunger rod.

Second, how to determine to replace the Shimadzu LC-20AT high pressure infusion pump seals (228-35145)?
A: Follow these three steps to determine
1, high-pressure pump, high pressure pump pressure volatility.
2, open the vent valve (PURGE) after the discharge pressure of the bubble is still volatile.
3, the bottom of the pump head with a liquid leak out (can be wiped with a filter paper at the bottom of the pump head).

Third, how to replace Shimadzu LC-20AT high pressure infusion pump seals (228-35145)?
1. Remove the respective connecting pipe pump, remove the pump head with a hex wrench.
2, Shimadzu pump seals special tool to remove the old Shimadzu LC-20AT high pressure infusion pump seals (228-35145), and then seal the other end of the new seal into the top of the pump head, the pinch .
3, the pump head and putting it back again, re-connect the respective connecting pipe.