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
Med Vet International Curad Medi-Strip Reinforced Wound Closures, 1/2in X 4in, 6/Pack
Adhesive wound closures with an exceptionally porous spun-bond fiber backing, includes bilateral nylon filaments for high tensile strength. Medi-Strips are used in addition to, or in place of, sutures Feature exceptionally porous spunbound fiber backing with reinforced nylon filaments for strength May stay in place for up to 7 days The hypoallergenic adhesive allows for excellent adhesion while still being gentle on skin Each size is supplied in color-coded packaging for quick identification1/2in X 4in6 per pack Comparable to products like ZipStitch instant stitches Available without a prescription Non-Invasive Easy to use Less pain than Stitches and Staples Less Scarring than Stitches Faster than Stitches Avoid cost of Stitches or Staples Rapid and effective wound closure Small and easy to transport Great addition to first aid kits
Alkali Scientific ASI™ 96 Well Square Well Silicone Sealing Mat, Autoclavable, 10/pk, 50/cs
ASI™ 96 Well Sterile Silicone Sealing Mat, 50/case are designed for 96-well storage plates and are available in autoclavable format. The square capped mats are made of thermoplastic elastomer and are suitable for long-term storage. They are molded from a proprietary thermoplastic elastomer for a flexible design, have alphanumeric grid-referencing, and are autoclavable. They are solvent resistant (including DMSO, Ethanol, and Isopropanol), and suitable for UV irradiation and Gamma iIrradiation. 6N required for piercing. The temperature range is −20°C to +55°C.
Electron Microscopy Sciences Pehanon pH Indicator Strips 9.5-12, 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: 9.5-12
Gradations: 0.5
Hach Company Chloride QuanTab Test Strips, 30-600 mg/L
Chloride is found in nearly all natural waters and affects human taste above 250 mg/L. High levels inhibit plant growth, and many industrial processes need to limit chloride concentration. Contains 40 tests.
