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
MSC Starrett Dial Indicator, 2.000 in Range, .001 in Graduations, 0-100 Dial, Jewel Bearings
This Starrett 25 Series Dial Indicator is engineered for precise measurements, featuring a shockless, hardened steel gear train and jewel bearings for durability and accuracy. It includes both lug-on-center and flat backs, meeting most AGD specifications. The unit offers a continuous reading double dial with direct reading count hands, ideal for various industrial and laboratory applications.
- Rugged unit construction with unbreakable crystal
- Hardened stainless steel stem, rack, spindle, gears, and pinions
- No-glare satin finish case and non-reflecting white eggshell dial
- Jewel bearings
- Lug on center back installed; flat back included
- Range: 2.000 in
- Graduations: .001 in
- Dial reading: 0-100
- Stem diameter: .375 in
- Dial color: White
- Style: Long range
- Indicator group: AGD 2
MSC Starrett LCD Electronic Drop Indicator, 1 in Max, 0.000100 in Accuracy, Flat Back
The Starrett LCD Electronic Drop Indicator is designed for precise measurements, featuring a flat back and a clear LCD display.
- Flat back included
- Comes with two lithium CR2032 3V batteries
- Offers both inch and metric units of measure
MSC SPI Test Indicator Contact Point, 0.0390 in Ball Diameter, Steel
This product is a test indicator contact point designed for use with Tesa Test Indicators. It features a ball style tip with a 0.0390 inch diameter and is made from durable steel.
- Ball style tip
- 0.0390 inch ball diameter
- Steel contact point material
- Designed for Tesa test indicators
MSC Value Collection Comparator Gage Stand, Granite, 6 in Base, 8 in Post
This comparator gage stand features a durable granite base with a 6 in base length and an 8 in post, designed for precise measurement applications. It includes a dial indicator for immediate use.
- Granite material for durability
- Rectangular base shape
- Includes a dial indicator
- Base length: 6 in
- Base width: 6 in
- Base height: 2 in
- Post height: 8 in
- Overall height: 10 in
- Flatness within 0.00005 in
- Suitable for accurate measurements
- Offers excellent value
- Ideal for small hobby shop work
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