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
Electron Microscopy Sciences Pehanon pH Indicator Strips 10.5-13.0, 0.5 gradations
pH indicator papers where the indicator and color scale are combined on a single strip. They permit a fast, convenient, and accurate pH determination since it is not necessity to compare color against a scale. This presentation also permits the pH measurement of colored solutions and suspensions, since the color of the test solution acts on the comparison scale in the same manner as on the indicator field.
The indicator zone (unprinted field) is in the center of the strip, the comparison fields above and below same. The strip is submerged in the solution for three seconds so that all colors zone are wetted and the center field changes color according to the pH value of the solution. It is then compared to the color filed bearing the corresponding pH value imprint. An invisible hydrophobic barrier just above the top color field prevents capillary action of the test solution.
pH: 10.5-13.0
Gradations: 0.5
Enterprise Technology Solutions Hewlett-Packard Fuser Kit, 110V, LJ M855/M880, 100,000 Page Yield
HP LaserJet 110V Maintenance Kit (Fuser) is designed for HP Color LaserJet Enterprise M855 and Color LaserJet Enterprise Flow MFP M880. It ensures your HP printer remains in working condition and continues providing your workers with the highest print quality possible. Maintenance kit yields approximately 100,000 pages. It includes user-replaceable parts that work with your HP printer to prompt you when they require maintenance.
Innovative Research Inc Humn Ttl Plsmngn Kit
Human Total Plasminogen ELISA Kit - This kit is for the quantitative determination of total plasminogen and plasmin in human plasma, serum, urine, cell culture media, or tissue extracts. For RUO. Strip well format. Reagents for up to 96 tests. Human plasminogen will bind to the capture antibody coated on the microtiter plate. Plasminogen, plasmin, and plasmin in complex with antiplasmin will react with the antibody on the plate. After appropriate washing steps, polyclonal anti-human plasminogen primary antibody binds to the captured protein. Excess antibody is washed away and bound polyclonal antibody is then reacted with the secondary antibody conjugated to horseradish peroxidase. Following an additional washing step, TMB substrate is used for color development at 450nm. The amount of color development is directly proportional to the concentration of total plasminogen. More Details Detection Target Plasminogen Reactivity Human Range 0.5-500 ng/ml Sensitivity 0.098 ng/ml
Enterprise Technology Solutions GBC V100E/V50 Binding Strips,4 Pins,2"200-Sht Cap,25/PK,Blue
Easily change pages as often as you like with pin spines. They produce a booklike binding that allows documents to lie flat for easy stacking. Use with VeloBind binding machines. The spines are sleek and secure. They come in one size only and hold up 200 sheets. Spines are reclosable and great for nonpermanent binding and frequent page changes.