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
CTL Scientific Supply Corp WATOR, 50 PIECES
WATOR - Indicator paper for the determination of water in butter according to DIN 10 311. Box of 50 pieces (each piece 78 x 40 mm). On contact with water WATOR develops dark-blue spots, the size and number of which is correlated to the distribution of the water in the butter.
CTL Scientific Supply Corp LITMUS PAPER BLUE,PK/6 DISP
LITMUS PAPER BLUE - Pack of 6 dispensers each with a 5 meter roll of paper.
Enterprise Technology Solutions Learning Resources Classroom Learning Clock Kit, GR PreK-4,6/ST,Multi
Engage small groups or individual students in time-telling activities with these student clocks. Color-coded hour and minute functions teach children how to tell time. Mini clocks are designed for children ages 5 and up.
MSC General Dial Drop Indicator, 1.0000 in Max Measurement, 0-100 Dial Reading, 0.001 in Graduation
This dial drop indicator offers a maximum measurement of 1.0000 inch and a 0-100 dial reading. It is equipped with a white dial, lug back, and a revolution counter, making it suitable for basic auto mechanical work like setting up rear axle gears.
- Minimum measurement: 0.0000 in
- Maximum measurement: 1.0000 in
- Dial graduation: 0.001 in
- Back type: Lug
- Indicator style: Plunger
- Dial reading: 0-100
- Base mount type: Magnetic
- Dial diameter: 2-1/4 in
- Dial color: White
- Revolution counter included
- Adjustable total revolutions counter
- Range per revolution: 0.1000 in
- Accuracy tolerance: 0.001 in
- Shank diameter: 3/8 in
MSC SPI Square Straight Edge, 96 in, Spring Steel, 0.0018 in Flatness
This square straight edge is 96 in long, 3-5/32 in wide, and 19/32 in thick. It features 0.0018 in edge flatness and 0.0036 in parallelism. The tool is constructed from spring steel.
- 96 in overall length
- 3-5/32 in overall width
- 19/32 in overall thickness
- 0.0018 in edge flatness
- 0.0036 in parallelism
- Constructed from spring steel
- Square edge type
Brim Technologies Sodium Thiosulfate Tablets, 50 mg / 500 count
Sodium Thiosulfate Tablets, 50 mg / 500 count used to remove residual chlorine from chlorinated water. Safe DChlor T50 Tablets are designed for collection containers from 100-3,000 ml.