Merck potassium-test method: reflectometry with test rods and reagent, 50 tests, 0.25 - 1.2 g/l K Reflectoquant

Please take note of the Safety Data Sheet http://www.merckmillipore.com/INTERSHOP/web/WFS/Merck-INTL-Site/en_US/-/USD/ShowDocument-File?ProductSKU=MDA_CHEM-116992&DocumentType=MSD&Language=EN&Country=GB