<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31391978</termId><termName>water filters</termName><termType>PT</termType><termNote><![CDATA[ Devices that filter undesirable elements from drinking water. These come in various forms, often tall, cylindrical ceramic containers, fitted with a filter on the inside and consisting of a porous wall, sometimes lined with a charcoal or sand. ]]></termNote><termCreatedDate>2026-03-30 20:53:59</termCreatedDate><relation><relationType>UF</relationType><termId>31483672</termId><termName>filter, water</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31391979</termId><termName>water filter</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31391371</termId><termName>food preparation equipment</termName><termType>PT</termType></relation></term>  </Zthes>