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
Micro Essential Lab Hydrion™ pH Test Paper
Micro Essential Laboratory Hydrion™ pH Test Paper is suitable for easy and instant pH determination.
Micro Essential Lab pHIZATEST™ Nitrazine Indicator Paper
Phenaphthazine 4.5–7.5 nitrazine indicator paper has been trusted by hospitals and physicians worldwide for more than 50 years.
Micro Essential Lab Insta-Chek™ 0-13 Wide-Range pH Test Paper/Dispenser
Direct reading pH paper with 14 colors for 14 pH values—the widest range available on a single paper
Micro Essential Lab Hydrion™ Single Roll pH Test Paper Dispensers
Hydrion™ pH Paper provides excellent color separation in the alkaline range and offers clear bright single color matches for various pH ranges.
MilliporeSigma™ Special Indicator pH Strip, 5.2 to 7.2
for pH measurements in meat non-bleeding pH 5.2 - 5.6 - 6.0 - 6.4 - 6.8 - 7.2 MColorpHast™
MilliporeSigma™ Universal pH Indicator Papers, pH 1 to 14
Since they protect against external influences, pH indicator papers supplied in rolls are well suited for long-term storage
MilliporeSigma™ MQuant™ pH Indicator Strips, pH 2.0 to 9.0
Measure pH swiftly without using instruments
Cytiva Whatman™ Acid/Alkali Test Papers
Assumes a color specific to sample pH upon contact with a sample. Whatman™ Acid/alkali Test Papers are impregnated with a mixture of pH indicators.
Fisherbrand™ Potassium Iodide Starch Test
Test for the presence of free iodine, chlorine and peroxides in solution
Cytiva Whatman™ Lead Acetate Test Paper Dispenser
Dispenser for rapid qualitative test paper to detect hydrogen sulfide
Cytiva Whatman™ pH Indicator Papers, CF Strips
Provides an extremely clear and accurate visual pH value using four different segments of dye-impregnated indicator papers. Whatman™ pH Indicator Papers, CF Strips use dyes that are chemically bonded to the paper and cannot be leached into solution.
Decon™ Phenazine pH Test Paper
Packaged in a convenient plastic dispenser with comparative color chart
Micro Essential Lab Hydrion™ (QK-1000) DR Quaternary Test Kit and Refill
Provides a simple and reliable means to measure the concentration of quaternary sanitizers, specifically Alkyldimethylbenzyl ammonium compounds, Rocall II and Hyamine 3500. Keep refills on hand (15-420-1W) to minimize downtime.