Test Paper for Qualitative Deter
Bismuth test paper (Box of 200 strips, 20 x 70mm)
• In the presence of bismuth ions (Bi3+), it shows an orange-red discoloration on a pale-yellow background
• Color reaction: pale-yellow to orange-red
• Limit of sensitivity: 60 mg/l B
Udder test paper (20 sheets, 90 x 140mm in PE bag)
• Used as a screening test on mastitis. Milk of infected cattle must not be sold
• All four tits of the udder require testing. A drop of milk is placed on the test zone. For
Chlortesmo (Box of 200 strips, 20 x 70mm)
• Free nitrous acid HNO2 (not nitrite ions) interferes, but can be destroyed by addition of amidosulphuric acid
• Color reaction: pale-yellow to blue
Waterfinder test paper (Reel of 7M length and 14mm width)
• On contact with water, the paper changes color from white to pink / lavender. The reaction is not reversible. Even after drying, the contact with water can clearly be proved <
Chromium test paper (Box of 200 strips, 20 x 70mm)
• Cr(III) ions must be converted to chromate prior to the detection
• For non-destructive testing of materials, apply a drop of acid solution (1 part hydrochloric acid 37 % +
Watesmo (Reel of 5M length and 10mm width)
• On contact with water, the paper changes color from light blue to dark blue. The reaction is not reversible. Even after drying, the contact with water can clearly be proved
Cobalt test paper (Box of 100 strips, 20 x 70mm)
• For non-destructive testing of materials, apply a drop of acid solution (50 ml hydrogen peroxide 3 % + 7.5 ml o-phosphoric acid 85 % + 5ml hydrochloric acid 37 %) to the degreased surfa
Wator (Box of 50 sheets, 78 x 40mm)
• It is a special presentation of Watesmo for the dairy industry
• On contact with water, the paper develops dark spots. Size and number of these spots are co
Copper test paper (Box of 200 strips, 20 x 70mm)
• Specific for Cu
• For the determination of copper on surfaces and in alloys, checking for pores in metallic coatings on copper, for criminal trace investigations (projectiles
Starch & Potassium Iodide Paper (Box of 200 strips)
• Also used to monitor diazotization reactions
• Oxidising agents react with potassium iodide to produce elemental iodine which in
Cuprotesmo (Box of 40 sheets, 40 x 25mm)
• Used 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 tra
Cyantesmo* (Reel of 5M length and 10mm width)
• To detect cyanides in sol
Dipyridyl paper (Box of 200 strips, 20 x 70mm)
• Even small amounts of Fe(II) can safely be detected in presence of large amounts of Fe(III)
• Color reaction: white to red
• Limit of sensitivity: 2 mg/l Fe2+
Fluoride test paper (Box of 200 strips, 20 x 70mm)
• Suitable for the safe and easy detection of dangerous hydrofluoric acid, which is used, for example, in computer chip production
• Color reacti
Indanthrene yellow paper (Box of 200 strips, 20 x 70mm)
• Used to determine the endpoint in the conversion of vat dyes to the leuco form
• Also called Hydrosulphite paper
• Color reaction: yellow to blue
Indipro* (Box of 60 test strips, 10 x 95 mm and reagents)
• Consists of 60 test strips with reagents
• Color reaction: yellow to green
• Limit of sensitivity: 50 microgram BSA (bovine
Iron test paper (Box of 100 strips, 20 x 70mm)
• In contrast to Dipyridylpaper, it reacts with Fe(II) as well as Fe(III) ions
• For specific detection of Fe(II), please use Dipyridylpaper (REF 90725)
• Color rea
Lead acetate paper* (Reel of 5M length and 7mm width)
Lead acetate paper* (Refill pack of 3 reels)