pH Paper and other Test Strips
Single-use test materials used to rapidly and semi-qualitatively determine the acidity or alkalinity of liquids or to measure another parameter or substance; may include tests for starch, chlorine, and molybdenum; usually via the use of color-based reactions.
pH Papers, pH strips, pH sticks, and pH test kits are used in laboratory, industrial, and educational environments to qualitatively assess pH levels or monitor acid-base titrations in a range of sample types.pH Buffer reference standards are used for the accurate calibration of pH meters and monitors for far more precise and quantitative pH measurement.
pH Test papers are supplied either as rolls, tear-off strips, or sticks. They are impregnated with indicator dyes that change color at a specific pH. In some products, indicator dyes are covalently linked to cellulose fibers to avoid bleed-out (leaching) and contamination of the test sample.
Some pH papers indicate simple acid or base conditions with a single red-to-blue color change (also called litmus papers). Universal pH papers and strips contain a combination of indicators that cover a range of pH values up to and including 0 to 14 in a single test. The observed color change is checked against a comparison chart supplied with the papers.
Alternatively, for metered assessments of pH, standard or reference pH buffers are used to calibrate pH meters and other electrochemical sensors.
Standard Buffer Characteristics:
• Typically supplied at fixed values of pH 4.01, pH 7.00, and pH 10.01
• May be color-coded for easy and quick identification
• Certified to their nominal pH and accuracy at a specified temperature (typically 20°C)
• Supplied as ready-to-use solutions or concentrates
• Contain antifungals for extended shelf life
Macherey-Nagel™ Quantofix™ Peroxide 25 Semi-quantitative Test Strips
Ideal to test low levels of peroxide in solutions. Macherey Nagel™ Quantofix™ Peroxide 25 Semi-quantitative Test Strips use an easy dip-and-read procedure and provide reliable results within 15 seconds.
Macherey-Nagel™ Quantofix™ Sulfite Test Strip Kits
Allows for the quick and easy determination of sulfite in solutions. Macherey Nagel™ Quantofix™ Sulfite Test Strip Kits are semi-quantitative, come pre-calibrated and contain all necessary equipment and reagents.
Macherey-Nagel™ Tritest™ pH Paper Roll
Featuring three indicator zones for the highest accuracy reading. Macherey Nagel™ Tritest™ pH Paper Rolls give the user the most precise readings possible in pH measurement.
Macherey-Nagel™ Potassium Iodide Starch Paper
Impregnated with potassium iodide and starch for the detection of nitrite and free chlorine. Macherey Nagel™ Potassium Iodide Starch Paper may be used by dipping it into the solution to be tested.
Macherey-Nagel™ Potassium Iodide Starch Qualitative Test Paper
Allows the quick and easy detection of strong oxidizers such as nitrite and free chlorine. Macherey-Nagel™ Potassium Iodide Starch Qualitative Test Paper is also used to control diazotization reactions. Potassium iodide starch paper is available in two formats: 5m reel or 70 x 20mm test strips.
Macherey-Nagel™ Phosphatesmo MI Qualitative Test Paper
Macherey-Nagel Phosphatesmo MI Qualitative Test Paper, Color Indicator: White to yellow, For Use With: For detection of Alkaline Phosphatase in milk, Quantity: 50Pack, Storage Requirements: 2 to 8 deg.C
Macherey-Nagel™ Lead Acetate Test Paper
Provides for the quick and easy determination of lead hydrogen sulphide in samples. Macherey Nagel™ Lead Acetate Test Paper is toxic and needs to be declared as hazardous.
Fisherbrand™ Universal pH Indicator Paper
Provides rapid and precise readings. Fisherbrand™ Universal pH Indicator Paper include a color scale printed on the cover for convenience.
Lovibond™ Powder Packs™ for Free Chlorine
Premeasured unit dose DPD reagents for water quality testing
Lovibond™ Total Chlorine Powder Packs™
Premeasured unit dose DPD reagents for water quality testing
Fisherbrand™ Universal pH Indicator Paper
Provides rapid and precise readings. Fisherbrand™ Universal pH Indicator Paper include a color scale printed on the cover for convenience.