The<unk>  is an initial indicator to detect the presence of one or more of the following heavy metals in a biological sample, and is often used by toxicologists where poisoning by such metals is suspected. The method, which is sensitive to antimony, arsenic, bismuth, selenium, thallium and mercury, was discovered by Hugo<unk>  in 1841.
Reinsch test
Rinne test
Rorschach test
Stenger test
Heaf test
Bourne test
Tine test
Vinegar test