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 pH Indicator Papers - Test Papers, 5.1 - 7.2, 100/bx
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
Med Vet International Dynarex Packing Strip, Plain, Sterile, 1" X 5 Yards, 12/Case
Sterile plain packing strips ideal for sterile drainage of open/infected wounds. Ideal for use as nasal packing, drainage wicks, or for packing wounds Specially woven gauze will not ravel, lint or fray 100% Cotton
Electron Microscopy Sciences pH Indicator Paper 0.3 - 2.3
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: 0.3/0.45
Electron Microscopy Sciences pH Indicator Paper 7.9 - 9.8
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: 0.2/0.4
Hach Company Sofchek Hach 611213 Swimming Pool Spa Total Hardness Test Kit Strips
50 Strips/Bottle Tests for: Total Hardness Dip a SofChek test strip in your pool or spa water for one second and remove. You will get test results in seconds. For a clean and healthy pool, test the water at each end a minimum of twice a week. AquaChek offers a full line of test strip products to help keep your pool and spa water clean and healthy. Check out our user-friendly products so you can enjoy the results.Takes about 15-30 seconds to show results A must for a swimming pool or spa owners.Test for: - Total Hardness
Alkali Scientific CellPro™ 1.0 ml 96-Well Deep Well Plate, U-Bottom, Square Well, 5/pk, 50/cs
Our deep well plates are compatible with all popular automated research platforms and robotic equipment. The plates have black printed alpha-numeric reference grids, are useful for bacterial cultures, centrifugation (up to 4000 x g), and general sample storage. All plates are produced in a class 100,000 cleanroom facility and are ANSI/SLAS 1-2004 compliant. They can be used with silicone sealing mats and sealing films of various materials (sold separately).
CTL Scientific Supply Corp POT IODIDE STARCH PAPER
POTASSIUM IODIDE STARCH PAPER, 200 strips/box each strip 20 x 70 mm
CTL Scientific Supply Corp QUANTOFIX EDTA
QUANTOFIX EDTA 100 strips/pack Test strips for the semi-quantitative determination of EDTA, NTA and other complexing agents in solutions. Gradation of scale: 0-100-200-300-400 ppm EDTA
CTL Scientific Supply Corp PH INDICATOR STRIPS 7.9-9.8
Non-bleeding indicator strips. Gradation of scale: 7.9 - 8.3 - 8.6 - 8.9 - 9.1 - 9.4 - 9.8 100 tests/box
CTL Scientific Supply Corp PEHANON INDICATOR STRIPS 1.0-
Pehannon Indicator Strips where the indicator and color scale are combined on a single strip. Gradation of scale: 1.0 - 1.3 -1.6 - 1.8 - 2.0 - 2.2 - 2.5 - 2.8 200 strips/box
CTL Scientific Supply Corp Fluoride Test Paper, Box of 200 strips
This paper is used for the determination of fluoride ions and gaseous hydrogen fluoride (H2 F2 ). The pinkish-red paper turns yellowish-white in the presence of fluorides. Substantial amounts of chlorates, bromates and sulphates cause white discolorations of the paper. These interferences are readily circumvented. Limit of sensitivity: 20 mg/l fluoride
Alkali Scientific ProCycle™ 1.2 mL 12-Strip Cluster (Dilution) Tubes, Racked, 10 Racks of 8 x 12 Strips, 960/Pk, Sterile
ProCycle™ 1.2 mL 12-Strip Cluster Tubes, Racked Systems are ideal for high-throughput screening processes and long-term storage. It all begins with high-clarity, ultra-pure polypropylene, combined with proprietary injection molding techniques to produce high-clarity vessels that are exceptionally robust, chemically-resistant, and pure. SBS footprint; 8 × 12 format. Ideal for automation / HTS. Tubes and racks are made from virgin polypropylene. Tube-and-rack system is suitable as a reaction vessel in your robotic workstation or as a long-term storage vessel in your sample library. A clear lid is a standard part of racked system. Certified free of detectable RNase DNase, DNA, PCR inhibitors, and tested pyrogen-free.
Electron Microscopy Sciences Pehanon pH Indicator Strips 1.8-3.8, 0.2/0.3 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: 1.8-3.8
Gradations: 0.2/0.3