litmus test

Etymology
From 🇰🇲.

Noun

 * 1)   A simple, binary test for the acidity or alkalinity of a substance, using litmus paper.
 * 2)   Any test which produces a binary, decisive result (for example, determining whether to appoint someone to a job) by measuring a single indicator.

Translations

 * Dutch:
 * Finnish:
 * Georgian: ლაკმუსის ტესტი
 * German:
 * Italian: cartina tornasole
 * Swedish: lackmustest


 * Dutch:, lakmoestest
 * Georgian: ლაკმუსის ტესტი
 * German:, ,
 * Italian: cartina tornasole
 * Swedish: lackmustest