Portland Cement Reference Materials and Fineness Standards
This category lists certified reference materials for cement testing—not construction cement for building work. Reference materials support instrument verification and calibration, such as checking a Blaine air permeability apparatus before specific-surface testing. Order the material with the certified property and certificate that your procedure requires.
Compare the Fineness Reference Materials
The catalog lists three NIST Portland cement fineness standards: SRM No. 114R in packs of 20, SRM No. 1881B in packs of 5 and SRM No. 1885B in packs of 5. These are distinct reference materials with different certified values and pack quantities; select the one specified by your method and calibration plan, not by price alone.
Check the current certificate details, validity and handling instructions from the listing and the accompanying documentation. A reference material's certification has conditions; confirm they still apply to your use before relying on a certified value.
Pair the Standard with the Right Instrument
Fineness verification commonly pairs with the Blaine air permeability apparatus or wet-sieve fineness equipment. Review each instrument's calibration requirements separately; replacing a manometer or sieve does not by itself complete instrument calibration.
Related Laboratory Materials and Sampling
Order the specified grade of standard test sand for specimen preparation, and sampling probes from the cement sampling equipment category. These are separate supplies; a reference standard is not a substitute for method materials, and method materials are not certified reference materials.
Confirm the Order
Verify the SRM number, pack quantity, certificate requirements and storage conditions before ordering. Use the current certificate and the applicable method for verification records; this guide does not assign certified values or calibration schedules.
