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
Abcam HRP Stability Conjugate Reagent, 1000ML
Abcam's HRP Stability Conjugate Reagent (ab171537) was developed specifically for Horseradish Peroxidase (HRP) conjugates in solution.
The product is subject to the following: Abcam Restricted Use Statement
Grainger Natilus Phone Test Set
The Grainger 16W268 is a compact fluorescent light bulb that provides an equivalent light output to a 60-watt incandescent bulb, while only using 13 watts of energy. This spiral CFL has a medium bi-pin base and emits a soft white 2700K light. With an average rated life of 10,000 hours, this bulb is designed for residential and commercial applications where energy savings and performance are desired. The 13W bulb produces 800 lumens of light output. This particular model cannot be used with dimmers or enclosed fixtures. Overall, the Grainger 16W268 is an energy-efficient CFL bulb that can replace standard incandescent bulbs.
ASI STANDARDS Chlorine in Water Check Standard - Ultra Low Concentration, 5.00 mg/kg - 100 mL
Chlorine in Water manufactured and certified gravimetrically under the guidance of an ISO 9001 quality management system. When applicable, standards are traceable to NIST certified reference materials.ISO 17034 Certified Reference Material
Electron Microscopy Sciences pH Indicator Paper 3.6 - 6.1
The indicator dyes of pH-Fix sticks are substantially bound to the cellulose fibers and as a result the possibility of the color bleeding, even in strongly basic solutions, is avoided. The dyes provide a sharp differentiation between the individual pH values and a clear and easy comparison to the color scale. Measurement of pH value is possible even in unbuffered or very weakly buffered solutions, since the sticks can be left in the solution until the final color change is completed. Test samples are not contaminated by the indicator dyes.
Gradations: 0.3/0.5