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MN Qualitative test paper antimony ions (Sb3+)

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MN Qualitative test paper arsenic ( mercury bromide paper )

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MN Qualitative test paper chlortesmo

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MN Qualitative test paper chromium

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MN Qualitative test paper cuprotesmo

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MN Qualitative test paper turmeric

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MN Qualitative test paper cyantesmo

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MN Qualitative test paper dipyridyl

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MN quality test paper iron

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MN Qualitative test paper fluoride

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1 - 10 of 32 results

MN Qualitative test paper antimony ions (Sb3+)

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41.86 €
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Antimony test paper • Quick and easy determination of antimony • The test paper allows the quick and easy detection of antimony [Sb(III)].• In the presence of antimony [Sb(III)] it shows orange-red spots on a yellow background. • Pentavalent antimony, i.e. Sb(V), has to be reduced to Sb(III) with metallic magnesium. • This test paper is specific for antimony. Product data • Presentation: Pack of 200 strips 20x70 mm • Color reaction: yellow → orange-red • Limit of sensitivity: 5 mg/l Sb3+
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MN Qualitative test paper arsenic ( mercury bromide paper )

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41.86 €
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Arsenic test paper (mercury bromide paper) for quick and easy determination of arsine. • This test paper allows the easy detection of arsine (AsH3) in the gas phase. • 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. • Arsenic test paper is used for the easy determination of arsenic in grape must and wine. • For the determination of arsine in compartment air the test paper is moistened with acetic anhydride. Product data • Presentation: Pack of 200 strips 20x70 mm • Color reaction: white → brown-black • Limit of sensitivity: 0.5 µg As
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MN Qualitative test paper chlortesmo

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52.32 €
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Chlortesmo • Quick and easy determination of free halogens • This test paper allows the quick and easy detection of free halogens (chlorine, bromine, iodine). • Free nitrous acid HNO2 (not nitrite ions) interferes, but can be destroyed by addition of amidosulphuric acid. Product data • Presentation: Pack of 200 strips 20x70 mm • Color reaction: pale-yellow → blue • Limit of sensitivity: 1 mg/l Cl2
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MN Qualitative test paper chromium

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31.10 €
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Chromium test paper • Quick and easy determination of chromate T• his test paper allows the quick and easy detection of Chromate (CrO43-). • 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 % + 4 parts hydrogen peroxide 3 %) to the degreased surface. • After 10-30 seconds add a drop sodiumhydroxyde (NaOH). • Press the test paper onto the precipitate then put it into diluted sulfuric acid. • In the presence of chromium, a violet spot appears.• With this procedure Chromium contents >0,1% are safely detected. Product data • Presentation: Pack of 200 strips 20x70 mm • Color reaction: white to violet • Limit of sensitivity: 2 mg/l Cr3+ or 5 mg/l CrO42–
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MN Qualitative test paper cuprotesmo

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52.32 €
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Cuprotesmo • Quick and easy determination of copper and copper salts • This test paper allows the quick and easy detection of copper(I) and copper(II) ions.• Is is 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 trace investigations (bullets), and for the detection of copper-containing pesticides on fruit and vegetables. • The test paper is specific for copper. Product data • Presentation: Pack of 40 sheets 40x25 mm • Color reaction: yellow-white → pink-purple • Limit of sensitivity: 0.05 μg on surfaces 3 – 5 mg/l Cu in solutions
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MN Qualitative test paper turmeric

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24.38 €
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Turmeric paper • Quick and easy determination of boric acid and borates • The test paper allows the quick and easy detection of boric acid and borates.• It is impregnated with curcumin, the yellow dye extracted from the roots of Curcuma tinctoria (yellow ginger). • The paper is dipped into the sample containing hydrochloric acid (pH 1-2). • Afterwards it is allowed to dry. • In presence of borate the paper turns orange to red. • Dipping into conc. sodium hydroxide causes a green-black color. • In the absence of borate, sodium hydroxide leads to a brown-red color. Product data • Presentation: Pack of 200 strips 20x70 mm • Color reaction: yellow → red • Limit of sensitivity: 20 mg/l B • Minimum purchase: 5 packs
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MN Qualitative test paper cyantesmo

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52.32 €
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Cyantesmo • Quick and easy determination of cyanides • This test paper allows the quick and easy detection of hydrocyanic acid and cyanides in aqueous solutions and extracts. • They are for example formed in the manufacture of fruit brandies and are toxic even in low concentrations. • To detect cyanides in solution, a drop of concentrated sulfuric acid is added to 10 ml sample. • Hydrocyanic acid gas is formed and can be detected at the boundary layer between water and air. Product data • Presentation: Reel of 5 m length and 10 mm width • Color reaction: pale-green → blue • Limit of sensitivity: 0.2 mg/l hydrocyanic acid (HCN)
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MN Qualitative test paper dipyridyl

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41.86 €
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Dipyridyl paper • Quick and easy determination of iron • The test paper allows the sensitive and specific detection of Fe(II) ions. • Even small amounts of Fe(II) can safely be detected in presence of large amounts of Fe(III). Product data • Presentation: Pack of 200 strips 20x70 mm • Color reaction: white → red • Limit of sensitivity: 2 mg/l Fe2+ 
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MN quality test paper iron

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31.10 €
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Iron test paper • Quick and easy determination of iron • This test paper is used for the rapid detection of iron ions (Fe2+ and Fe3+). • In contrast to Dipyridylpaper it reacts with Fe(II) as well as Fe(III) ions. • For the specific detection of Fe(II) please use Dipyridylpaper . Product data • Presentation: Pack of 100 strips 20x70 mm • Color reaction: yellow-white → red-brown • Limit of sensitivity: 10 mg/l Fe2+ or Fe3+ 
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MN Qualitative test paper fluoride

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42.62 €
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Fluoride test paper • Quick and easy determination of fluoride • The test paper allows the rapid detection of fluoride ions in solutions containing hydrochlorid acid. • It is suitable for the safe and easy detection of dangerous hydrofluoric acid, which is used for example in computer chip production. Product data • Presentation: Pack of 200 strips 20x70 mm • Color reaction: pink → yellow-white • Limit of sensitivity: 20 mg/l F–
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