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
Thermo Scientific™ ColorpHast™ pH Strips, Intermediate, three squares with different indicators on each strip
|Type||Intermediate pH Strip|
Thermo Scientific™ ColorpHast™ pH Strips, Narrow, one square with single indicator on each strip, 11-13 pH range
|Type||Narrow pH Strip|
Single color match for each pH value.
|pH Range||0 to 13|
Select the pH range you need, quickly and inexpensively.
|Includes||Color comparison scale|
|For Use With (Application)||To determine pH within half unit via distinct color changes|
Perform safe, quick and easy water quality checks with test strips.
|Type||Water Test Strip|
For water quality testing
|Storage Requirements||Store tightly sealed vial in a cool, dry storage area away from moisture; Keep out of direct sunlight|
|For Use With (Application)||Water quality testing|
Dual Range QAC Test Strip takes care of all testing needs on one strip.
Use these test papers for a variety of applications.
|Storage Requirements||Out of direct sunlight, kept dry, keep vial sealed|
Line of pH test strips incorporates the most up-to-date technology.
|Type||pH Test Strip|
|Shelf Life||3 Years|
|For Use With (Application)||Stabilized to provide user with most accurate color determination|
For pH determinations between 4.0 to 10.0
|Type||Universal pH Indicator Solution|
|pH Range||4 to 10|
|For Use With (Application)||Rapid determinations of approximate pH of aqueous solutions|
For use in a variety of pH test sets
|Volume (English)||16.9 oz.|
|Volume (Metric)||500 mL|
Offer excellent color separation in the pH range; 100 pH test strips/vial.
|Includes||Colorimetric chart on the vial label|
|Type||pH Test Strip|
|Quantity||100 Strips/Vial, 6 Vials/Pk.|
|Storage Requirements||Room Temperature|
|For Use With (Application)||For lab, field or classroom use, instant dip and read result|
Packaged in a convenient plastic dispenser with comparative color chart
Foolproof pH test to determine if a solution is acidic or alkaline.
Test for starch quickly and easily
Delivers the required dose of DPD reagent for a 5mL test sample
Combines ease-of-use with accuracy and consistency for determination of the neutralization point in weak acid/strong alkali reactions.
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.
|Includes||Plastic supports, paper segments on each strip, complementary indicator charts|
Combines ease-of-use with unsurpassed accuracy and consistency
Cytiva Whatman™ pH Indicator, 1.0 to 11.0 Range, 10 books of 10 strips, pH Indicators and Test Papers
Accurate for a wide range of routine pH testing
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.
Dispenser for rapid qualitative test paper to detect hydrogen sulfide
Provides rapid determination of pH values. Whatman™ pH Indicators are impregnated with a mixture of several indicators that change color when they come in contact with a particular sample solution.
|Includes||Color comparison chart|
Impregnated with a mixture of pH indicators, acid-alkali litmus papers assume a color specific to sample pH upon contact with a sample. Whatman™ Litmus Blue Test Paper provides rapid determination of pH values and has a variety of applications in laboratories and industry.