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
MSC SPI Test Indicator Contact Point, 0.0780 in Ball, Carbide, 1-3/4 in Length
The product is a Test Indicator Contact Point with a 0.0780 in ball diameter and a carbide contact point, measuring 1-3/4 in length. It is designed for use with test indicators.
- Ball style
- 0.0780 in ball diameter
- 1-3/4 in contact point length
- Carbide contact point material
- Designed for use with test indicators
Hach Company Chlorine Reagent Set, DPD Free and Total Chlorine, 25 mL sample
Reagent Set, Chlorine (Free & Total DPD Colorimetric Method). 100 tests each, for 25 mL samples.Boric Acid free!*This product has not been evaluated to test for chlorine and chloramines in medical applications in the United States.
Hach Company Free Chlorine Test Kit, Model CN-70F
Simple, low-cost color disc method is the most accurate visual test kit method.\*This product has not been evaluated to test for chlorine and chloramines in medical applications in the United States.
Hach Company Free Chlorine Chemkey Reagents (Qty 300)
Free Chlorine Chemkeys, range 0.04 - 4.00 mg/L Cl2. For SL1000 Portable Parallel Analyzer (PPA). 12 boxes of 25 (300 tests total quantity).USEPA accepted for reporting in drinking water analysis using Hach Method 10260.
Hach Company Total Chlorine Chemkey Reagents
Total Chlorine Chemkeys, range 0.04 - 10 mg/L Cl2. For SL1000 Portable Parallel Analyzer (PPA). Box of 25.USEPA accepted for reporting in drinking water analysis using Hach Method 10260.
Hach Company Chlorine (Free and Total) Test Kit, Model CN-80
*This product has not been evaluated to test for chlorine and chloramines in medical applications in the United States.
Thomas Scientific Chlorine Test Kit (Low Range) -- 1 drop 1 ppm / 25mL
Chlorine Test Kit (Low Range) -- 1 drop 1 ppm / 25mL
