<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31344845</termId><termName>potassium sodium tartrate</termName><termType>PT</termType><termNote><![CDATA[ Colorless double salt first prepared in La Rochelle, France, and thus also known as Rochelle salt. It is used as an analytical reagent, as a laxative, and in making mirrors.In conservation science, it is used in saturated solution as a cleaning agent on bronze and other metal objects. ]]></termNote><termCreatedDate>2026-03-30 20:33:00</termCreatedDate><relation><relationType>UF</relationType><termId>31344846</termId><termName>Rochelle salt</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31344847</termId><termName>sodium potassium tartrate</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31344848</termId><termName>tartrate, potassium sodium</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31320494</termId><termName>salt</termName><termType>PT</termType></relation></term>  </Zthes>