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 Mahr 1004 Compramess Dial Comparator Gage, 0.0001 in. Graduation, 0.005 in. Range, 1 ea.
This dial comparator gage provides high-precision dimensional measurements, featuring a 0.0001 in. graduation and a 0.005 in. maximum measurement range. Engineered for durability and sensitivity, it incorporates a jeweled movement and a high-precision ball guide to ensure minimal hysteresis and reliable performance.
- Shockproof movement for long-term reliability
- Large, high-contrast white dial face for clear readability
- Adjustable tolerance markers for efficient measurement monitoring
- Measuring spindle and mounting shank constructed from hardened stainless steel
- Spindle can be retracted using a screw-in cable release or a lifting knob
- Resistant to lateral forces acting on the measuring spindle
- Includes adapter bush (8 mm to 3/8 in.) and a protective case
MSC Mitutoyo Electronic Inside Micrometer, 1.0000-2.0000 in, 0.001 in Resolution
This electronic inside micrometer is designed for precise internal measurements within a range of 1.0000 to 2.0000 inches, offering a resolution of 0.001 inch and an accuracy of +/-.00015 " It features a ratchet stop thimble for consistent pressure, hardened steel measuring faces for durability, and a digital counter for easy readings. It also supports data output and comes with an extension rod and interchangeable measuring heads.
- Extension rod type
- Ratchet stop thimble
- Resolution of 0.001 inch
- Gage depth of 4 inch
- Hardened steel measuring face material
- Digital counter for clear readings
- Data output capability
- Accuracy of +/-.00015 inch
- Includes extension rod, interchangeable measuring heads, and display unit
- Maximum extension rod length of 150 mm
- Operates with one SR44 silver oxide battery
MSC Aigner Label Holder, 48 in Long, 2 in Wide, Clear
This product is an Aigner Label Holder designed for organizing and identifying items. It measures 48 inches in length and 2 inches in width, and features a clear design to allow visibility of labels.
- Width: 2 in
- Length: 48 in
- Color: Clear
- Package quantity: 6
MSC Value Collection Deepol with Indicator, Bridgeport Type Mills
This Deepol with Indicator is a quality product at a great value, designed to support your business needs.
- Deepol with indicator
- Compatible with Bridgeport type mills
Hach Company Chlorine (Total) Reagent Set for CN-21P
For determination of Chlorine (Total) by thiosulfate drop-count titration. Replacement reagent set for CN-21P Test Kit. Set includes Sulfamic Acid Powder Pillows, Potassium Iodide Powder Pillows and Sodium Thiosulfate Standard Solution (0.0246 N). Approx. 100 tests.
Enterprise Technology Solutions Scholastic Teaching Resources First Readers Books, Levels E/F, Gr PK-2, 80/Set, Multi
Jump-start your early reading program with this big collection of child-pleasing, First Little Readers Books correlated with Guided Reading Level E and F. Sturdy storage box contains 80 full-color books with five copies of 16 titles each with 16 pages. Included teaching guide is packed with lessons, tips and literacy-boosting reproducibles. Books are a great, must-have resource for every pre-kindergarten to second-grade classroom. Every book features simple text, decodable words, strong picture cues and one to five lines of text per page. Books help to ensure students produce learning growth to the next level.
