Macherey-Nagel
AQUATEC test strips (Box of 100 test strips, 10 x 200mm)
• In petrol and fuel oil tanks, water accumulates over time building a layer at the bottom. To measure this layer the PE strip is fixed ont
Arsenic (Mercury bromide) test paper* (Box of 200 strips, 20 x 70mm)
• Arsenic in solutions has to be converted into AsH3 with Zn/acid and purged from the solution. The arsine is detected directly at the boundary layer between water and air
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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
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
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 % +
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
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
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)
Lead acetate paper* (Booklet with 100 strips, 10 x 70mm)
Nickel test paper (Box of 200 strips, 20 x 70mm)
• For non-destructive testing of materials, apply a drop of 3% Nitric acid (1 part Nitric acid 85%, 5 parts water) to the degreased surface. After 1 minute, absorb the liquid with the test pape
Nitratesmo (Reel of 5M length and 10mm width)
• Shows different colors for the two ions
• Virage Nitrate: white to red (dip test paper into sample and afterwards into sulfuric acid 96%)
• Virage Nitrite: white to ye
Potassium iodate starch paper (Reel of 5M length and 7mm width)
• Used in food analyzing laboratories
• The reaction is as follows: 2 IO3- + 5 SO32- + 2 H+ to 5 SO42- + I2 + H2O
• Sulphurous acid or sulphites reduce potassium i