Macherey-Nagel

• Singly sealed to ensure long-term stability and protection against many external influences

• Have to be placed in the plastic reel with color scale to be used

• Gradation (pH): 12.0 - 12.5 - 13.0 - 13.5 - 14.0

• Duotest indicator papers combine two different indicator zones on a single strip

• The zones are separated by a hydrophobic barrier, which effectively prevents mixing of the reaction colors and increases the mechanical stability

•

• Filter paper with medium retention and flow rate

• This filter paper covers a wide range of filtration applications

• Surface: Smooth

• Basis weight: 85 g/m2

• Thickness: 0.2 mm

• Filtration speed: 27 s <

• 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

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• Fastest, wet-strengthened, quantitative filter paper with highest flow rate

• Used for example in analytical procedures of samples with coarse or gelatinous particles

• The smooth surface allows fiber-free filtration, even for high

• Unify pH indicator and reference color chart on one strip

• Any sample color has the same effect on both, the reference colors and the reactive pad, allowing unadulterated pH reading even in colored solutions

• Gradation (pH): 5.2

• Gradation: 0 - 50 - 100 - 200 - 300 - 400 - 500 mg/L Peracetic acid

• Color change: yellow to green

• CE-certified

• Equivalent to Whatman No. 4

• Fast filter paper with excellent retention of coarse particles and gelatinous precipitates

• This soft filter paper is used for example in routine clean up of biological or organic solutions

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• MN 640 md
• Equivalent to Whatman Grade No. 40
• Ashless, medium fast filtration
• Eg for magnesium ammonium phosphate, zinc sulphide etc.

• Equivalent to Whatman No. 44

• Ashless, slow filter paper which is slightly less retentive than MN 640 d

• Surface: Smooth

• Basis weight: 70 g/m2

• Thickness: 0.16 mm

• Filtration speed: 100 s

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• Moisture indicator

• Shows the relative humidity of the surrounding air from 20-80%

• Gradation (Humidity): 20 - 30 - 40 - 50 - 60 - 70 - 80% relative humidity

• Length: 100mm

• Width: 50mm

• 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 hydrochl

• Wet-strengthened, slow, ashless filter paper with very fine particle retention

• Standard paper for critical gravimetric analysis of fine precipitates like barium sulfate or metastannic acid

• The smooth surface allows fiber-free f

• Fastest quantitative filter paper with highest flow rate

• Used in analytical procedures of samples with coarse or gelatinous particles

• Surface: Smooth

• Basis weight: 85 g/m2

• Thickness: 0.22 mm

• Fil

• Duotest indicator papers combine two different indicator zones on a single strip

• The zones are separated by a hydrophobic barrier, which effectively prevents mixing of the reaction colors and increases the mechanical stability

•

• Filter paper with medium retention and flow rate

• This filter paper covers a wide range of filtration applications

• Surface: Smooth

• Basis weight: 85 g/m2

• Thickness: 0.2 mm

• Filtration speed: 27 s <

• Allows the rapid detection of Bismuth

• 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

• 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

• Color reaction: pale-yellow to blue