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
Hach Company Chloride QuanTab Test Strips, 300-6000 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. Method/Chemistry: Quan Tab Test Strips. Range: 30 mg/L. Contains 40 tests.
MSC Pewag Chain Sling, Single-Leg, Grab/Sling Hook, 10 ft, 7100 lb Capacity
This single-leg chain sling from Pewag is engineered for demanding lifting applications. It features both a grab hook and a sling hook, providing versatility for various rigging setups. With a 10-foot length and a robust 7100 lb vertical capacity, this alloy steel chain sling is heat-treated for enhanced durability and abrasion resistance. It complies with multiple safety and quality standards, making it suitable for professional use.
- Single-leg configuration.
- Equipped with grab hook and sling hook.
- 10 ft length.
- 7100 lb vertical capacity.
- Alloy steel construction.
- Grade 80 chain sling.
- Heat-treated finish.
- Abrasion-resistant.
- Complies with OSHA, NACM, ISO 9001-2015, and ASTM A391/A391M standards.
MSC Mitutoyo Dial Indicator, 1 in Range, 0.001 in Graduation, Flat Back
This dial indicator features a 0 to 1 in range and a 0.001 in graduation, making it suitable for precise measurements. It includes a 0-50-0 dial reading and a flat back for versatile mounting. Designed as a plunger-style indicator with plain bearings, it ensures reliable performance across various applications.
- Range of 0 to 1 in
- Graduation of 0.001 in
- Dial reading of 0-50-0
- Flat back design
- Plunger style indicator
- Plain bearing type
- Accuracy of +/-0.002 in
- Measuring force of 1.8 N
- Range per revolution of 0.1 in
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