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
HF Scientific™ PPD-2 DPD Powder Pop™ Dispensers for Chlorine Testing
Use with any DPD-based photometer or test kit
Hach Lange™ Total Chlorine Reagent Powder Pillows
For total chlorine determination by the DPD method.
Hach Lange™ Chlorine Standard Solution, 25-30 mg/L as Cl2, PourRite Ampules (NIST)
For accuracy checks in chlorine determinations.
LaMotte™ DPD Chlorine Secondary Standards Kit for LaMotte Colorimeters
Used for periodically rechecking calibration of LaMotte Colorimeters
United Scientific Supplies Litmus Paper
Available as Litmus paper and Litmus Granular in bottles.
Eisco™ Lead Acetate Test Paper Strips
Detect hydrogen sulfide in drinking water with Eisco Labs Lead Acetate Test Paper Strips. These strips detect hydrogen sulfide at 5ppm, ensuring water safety. Ideal for well, home, and drinking water test kits, each pack offers a reliable, easy-to-use solution for maintaining water quality.
Eisco™ Wide Range pH Test Strips 11.5-14, 3-Pad, Quick Read, Premium Quality, 50 Single Use Strips in Bag
Eisco Labs wide range pH test strips 11.5 to 14 feature a 3-pad design for quick and accurate readings. Premium quality, with 50 single-use strips included in a convenient bag. Ideal for diverse pH testing needs.
Eisco™ Blue Litmus pH Test Paper: Acid Indicator
Indicates the presence of an acid with a pH between 4.3-6.8
Eisco™ Test Strips - pH 0 to 2.5 - Ideal for Strong Acids
Eisco Labs pH 0 to 2.5 test strips provide precise measurement for strong acids. Ideal for quick and accurate testing.
Eisco™ Phenolphthalein Test Paper for Ammonia Detection - Ammonia Leak Detector Strips for Refrigerators, Air Conditioners, HVAC Maintenance, 100 Strips
Eisco Labs Phenolphthalein Test Paper for Ammonia Detection. Designed for professional and home use, these strips maintain the integrity of refrigerators, air conditioners, and HVAC systems. Each pack contains 100 high-quality test strips, providing a reliable solution for detecting ammonia leaks.
Eisco™ Neutral Litmus Test Paper
Qualitatively indicate if a solution is neutral, acidic, or basic without providing a specific pH value for the solution
Eisco™ Test Strips pH 0 to 1.5 Range - High Precision Acid Test Kit, Measures in Increments of 0.3 to 1.5 ppm, 50 Strips
Eisco Labs pH test strips 0 to 1.5 Range offer high precision for acid testing, measuring in increments of 0.3 to 1.5 ppm. Includes 50 strips.
Eisco™ Red Litmus pH Test Paper: Base Indicator
Identifies a base or alkaline material with a pH of 6.8-8.1
Eisco™ Precision pH Test Strips - Narrow Range 3-6 pH, Quick and Accurate Testing in 0.5 pH Increments
Eisco Labs Precision pH test strips offer quick and accurate testing within a narrow 3-6 pH range, measuring in 0.5 pH increments. Ideal for assessing mildly acidic to neutral substances.