<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">acidimeters</topic></authority><related type="narrower"><topic>babcock testers</topic></related><related type="narrower"><topic>acidity testers</topic></related><related type="broader"><topic>quantity measuring devices for substances</topic></related><variant type="other"><topic>acetometer</topic></variant><variant type="other"><topic>acidimeter</topic></variant> <note xml:lang="en"><![CDATA[ Any device used to determine the strength of an acid. Refers to an electronic instrument in more recent use. ]]></note></mads>