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
Thomas Scientific Chlorine Dioxide Test Kit -- 1 drop 0 5 ppm ClO2 / 10mL
Chlorine Dioxide Test Kit -- 1 drop 0 5 ppm ClO2 / 10mL
MSC SPI Dial Drop Indicator, 0.2500 in, 0.0015 in Accuracy, 0-25-0 Dial Reading
This dial drop indicator is designed to measure geometric tolerances and dimensional deviations of workpieces. It offers reliable performance for various industrial and laboratory applications.
- Counter pointer
- Easy reading
- Universal positioning capability
- Includes NIST traceability certification
- NIST certified
- Meets US Federal Specifications AGDGpNo 2
- Revolution counter calibrated
MSC Mitutoyo Electronic Drop Indicator, 2 in Max, +/-.0002 in Accuracy, Digital, Straight
This electronic drop indicator provides precise digital measurements with an intuitive analog bar for easy reading of origin and tolerance values. It is equipped with a data output port, allowing integration into measurement networking and statistical process control systems.
- Straight connection type
- Accuracy of +/-.0002 in
- Measuring force of 2.30 newtons
- Maximum measurement capacity of 2 in
- Flat back type
- Digital display type
- Long form calibration certificate included
- Carbide contact point material
- Battery-powered
- Includes one SR44 silver oxide battery
- Multiple resolution options: 0.00002, 0.00005, 0.0001, 0.0002, 0.0005 in
MSC Mitutoyo Horizontal Dial Test Indicator, 0.0300 in, 0.000500 in Accuracy
This Mitutoyo Horizontal Dial Test Indicator offers precise measurement capabilities, with a maximum measurement of 0.0300 inch, a 0-15-0 dial, and an accuracy of 0.000500 " It is designed for reliability and longevity in various applications.
- Dust and oil proof construction
- O-ring seal for enhanced protection
- Carbide-tipped contact point for durability
- Glare-free crystal for easy reading
- No-clutch structure for consistent performance
- Automatic reversal for versatile use
- High-impact resistance
- Durable and scratch-resistant design
MSC Mitutoyo Dial Drop Indicator, 0.1250 inch Max Measurement, 0-25-0 Dial Reading, 0.0005 inch Accuracy
This dial drop indicator provides precise measurements for various applications. It features a clear dial reading and high accuracy, making it suitable for detailed inspections.
- White dial color
- 0.0005 inch dial graduation
- 0.0500 inch per revolution
- Lug back for easy mounting
- Includes a revolution counter
MSC Fowler Dial Drop Indicator, 1 in Max Measurement, 0-25-0/0-50 Dial Reading, Lug Back
This Dial Drop Indicator features a maximum measurement of 1.0000 in and includes both 0-25-0 (balanced) and 0-50 (continuous) dial readings. Designed for precision, it incorporates a white dial, a lug back, and a revolution counter, making it suitable for a variety of measurement applications.
- Carbide contact point
- Solid steel housing
- Tolerance markers included
- English unit of measure
- NIST certificate of calibration
- 2-1/4 in dial diameter
- 0.3750 in stem diameter
- #4-48 thread size
- 0.0500 in range per revolution
MSC Mitutoyo Dial Drop Indicator, 0-100 Dial Reading, 0.0100 mm Accuracy, Flat Back
This dial drop indicator provides precise measurements with a 0-100 dial reading and 0.0100 mm accuracy. Designed with a flat back for versatile mounting, it features a revolution counter and a glare-free, scratch-resistant crystal for clear visibility and durability in laboratory and industrial settings.
- 0-100 dial reading
- 0.0100 mm accuracy
- 5.00 mm maximum measurement range
- Flat back mounting type
- Includes revolution counter
- Measuring force of 1.50 N
- 40.00 mm dial diameter
- 8.000 mm stem diameter
- Glare-free, scratch-resistant crystal
- Supplied with green limit markers and a plastic case
- Meets ISO/JIS standards
- Made in Japan
MSC Insize USA LLC Dial Drop Indicator, 1.0000 in Max Measurement, 0-100 Dial Reading, 0.001000 in Graduation
This dial drop indicator offers precise measurements with a 1.0000 in maximum range and a 0.001000 in graduation. It is designed for accuracy in various applications and comes with traceability certification.
- White dial color
- 0.001000 in dial graduation
- 0.1000 in per revolution
- Lug back design
- Calibrated for accuracy
- Supplied with manufacturer inspection certificate traceable to NIST
- Meets ASME B89.1.10M-2001 standards
- Supplied with limit pointers and bezel clamp
MSC Mitutoyo Dial Drop Indicator, 0.025 in Range, 0.0001 in Graduation
This dial drop indicator provides precise measurements for various applications. It offers clear, accurate readings with robust design features like shockproof construction and jeweled bearings, ensuring durability and reliable performance.
- Accuracy of ±0.0001 in.
- Flat back, plunger indicator style, and jeweled bearing.
- Measuring force of 2.0 N or less; range per revolution of 0.01 in.
- Shockproof design with glare-free, scratch-resistant crystal.
- Meets ANSI/AGD and ISO/JIS standards.
- Carbide tipped contact point for durability.
- Enhanced resistance to dust, water, and oil.
- Four-screw mounting; machine ground rack gear for accuracy.
- Includes a rotating bezel.
- Hardened steel spindle/stem with offset bushing for clamping.
MSC SPI Dial Test Indicator & Base Kit, 0.0300 in Max Measurement, 0-15-0 Dial
This dial test indicator and base kit is designed for precise measurements in various applications. It features a maximum measurement capacity of 0.0300 inches and a fine dial graduation of 0.000500 inches, along with a 0-15-0 dial reading, providing clear and accurate readings. The kit includes a magnetic base for stable and versatile positioning during use.
- Indicator type is dial test
- Magnetic base for stable positioning
- Maximum measurement of 0.0300 inches
- Dial graduation of 0.000500 inches
- 0-15-0 dial reading for easy interpretation
- Equipped with an on/off switch for convenience
MSC SPI Dial Drop Indicator, 0-50 Dial, 0.0120 mm Accuracy, 0-5 mm Range
The SPI Dial Drop Indicator is designed to measure geometric tolerances and dimensional deviations of workpieces. It features a 0-50 dial reading with a 0.0120 mm accuracy and a 0.00-5.00 mm range. This metric indicator includes NIST traceability certification and is calibrated, making it suitable for precise laboratory and industrial applications.
- Counter pointer
- Easy reading
- Universal positioning capability
- Includes NIST traceability certification
- Measures geometric tolerances and dimensional deviations of workpieces
MSC Mahr Dial Comparator Gage, 0.000050 Inch Graduation, 0.0020 Inch Max Measurement, 0.000050 Inch Accuracy
This precision dial comparator gage is designed for accurate measurements in various applications. It offers a fine graduation of 0.000050 inch and can measure up to 0.0020 " The gage features an accuracy of 0.000050 inch and includes a 1 N measuring force and 0.11 inch overtravel. Its white dial provides clear readability, and it comes with an adapter bush and a protective case.
- Graduation of 0.000050 inch
- Accuracy up to 0.000050 inch
- Maximum measurement of 0.0020 inch
- Measuring force of 1 N
- Overtravel of 0.11 inch
- White dial color
- Includes adapter bush, 8 mm to 3/8 inch
- Includes protective case
MSC Starrett Horizontal Dial Test Indicator, 0.80 mm Max, 0-40-0 Dial, Jeweled Bearing
The Starrett Series 3909 Horizontal Dial Test Indicator is designed for precision measurements, featuring a robust gear-driven design and jeweled movement for accuracy. Its durable satin chrome finish ensures longevity, and the adjustable, replaceable contact point enhances versatility. With a high-contrast dial and automatic contact point reversal, this indicator provides reliable performance for various laboratory and industrial applications.
- Precision gear-driven design
- Jeweled movement
- Satin chrome finish
- Adjustable contact
- Durable construction
- Replaceable contact
- High contrast dial
- Contact point reverses automatically
- Narrow body
- Contact point included
- Two dovetail clamps included
- Case included
MSC SPI Digital Electronic Drop Indicator, 2 in, 0.001500 in Accuracy
This Digital Electronic Drop Indicator is designed for precise measurements, offering a 2-inch maximum range and an accuracy of 0.001500 " It features a digital display with both flat and center lug back types, along with USB connectivity for data output. The indicator is calibrated and includes NIST traceability certification.
- MM/Inch measurement capabilities
- Zero, preset, ABS/INC, and tolerance functions
- Supports data output
- IP65 protection level
- Intuitive reading and high resolution
- Easy operation
- Calibrated with NIST traceability certification
- Powered by a CR2032 lithium battery
- Ceramic contact point material
MSC Starrett Electronic Indicator, 4 in Range, .0002 in Accuracy, .375 in Stem
This electronic indicator, part of the 2700 Wisdom series, provides precise measurements for various industrial and scientific applications. It offers a wide measurement range and high accuracy, making it suitable for detailed inspections and quality control.
- 4 inch / 100 mm measurement range
- Resolution of .001/.0005/.0001 inch or 0.02/0.01/0.002 mm
- Accuracy of .0002 inch / 0.004 mm
- .375 inch stem diameter
- #4-48 UNF thread type
- Flat back design