Macherey-Nagel, 90601, Cuprotesmo, Box of 40 Pieces (25 X 40 Mm)

Preference should be given to this test paper for the detection of copper and copper salts on surfaces and in ash, for the detection of pores in metallic coatings on copper containing materials, in criminal trace investigations (projectiles), and for the detection of copper-containing pesticides on fruit and vegetables. The yellow-white paper turns pink to purple-red in the presence of copper or copper salts. It reacts with metallic copper as well as with Cu + and Cu 2+ ions. The test paper is specific for Cu. Limit of sensitivity: 0.05 micrograms g Cu on surfaces as metallic Cu or Cu salt, 3 to 5 mg/l Cu ions Note: In addition to CUPROTESMO we supply a COPPER test paper based on a different reaction.

• Cuprotesmo, Box Of 40 Pieces (25 X 40 Mm)