pH Paper and other Test Strips
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
Fisherbrand™ Plastic pH Strips
Laboratory grade plastic pH strips in durable and easy to open flip-top vials
Fisherbrand™ Paper pH Strips
An easy choice for classroom experiments or demonstrations
MilliporeSigma™ MQuant™ pH Test Strips and Indicator Papers
Measure pH onsite without instruments or extensive preparation
Fisherbrand™ pH Test Strips
Conveniently packed in flip-top vials, these multipad pH strips provide excellent color separation over the entire pH scale with clear multicolor matches at every interval.
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.
Fisherbrand™ pH Test Paper Rolls
General purpose pH papers in efficient 15 ft. rolls
Micro Essential Lab Hydrion™ pH Test Paper
Micro Essential Laboratory Hydrion™ pH Test Paper is suitable for easy and instant pH determination.
pH Test Strips, Ricca Chemical
General-purpose pH test strips
Micro Essential Lab Single-Roll Hydrion™ pH Test Paper, With Chart
For measuring pH solutions.
Micro Essential Lab Hydrion™ Double Roll pH Test Paper Dispensers
Hydrion™ Double Roll pH Papers consist of two rolls of pH papers packaged in a protective plastic dispenser with stainless steel cutoff lips and two matching color charts. pH color changes are distinct and easily matched to the color chart.
Fisherbrand™ Plastic pH Test Strips
Offer excellent color separation in the pH range; 100 pH test strips/vial.
LaMotte™ Insta-Test™ Chlorine Test Strips
Test for free and total chlorine with one strip.
MilliporeSigma™ Reflectoquant™ pH Reflectometric Tests with Strips
For use with Reflectoquant™ systems