<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31398321</termId><termName>butyrometers</termName><termType>PT</termType><termNote><![CDATA[ Instruments for estimating the percentage of butter fat in milk. The instrument comprises a cylindrical bottle that tapers off at one end to a graduated tube with a conical bulb termination. It is often used with instruments gauging the purity of milk, "lactometers." ]]></termNote><termCreatedDate>2026-03-30 20:47:05</termCreatedDate><relation><relationType>UF</relationType><termId>31398322</termId><termName>butyrometer</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31398323</termId><termName>lactobutyrometer</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31358258</termId><termName>quantity measuring devices for substances</termName><termType>PT</termType></relation><relation><relationType>BT</relationType><termId>31391693</termId><termName>milk testers</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31344215</termId><termName>milk</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31398324</termId><termName>lactometers</termName><termType>PT</termType></relation></term>  </Zthes>