DESCRIPTION
Check Spheres are an inexpensive particle size standard designed for daily use to confirm the performance of most types of particle size analysers. They are manufactured to the same tolerances as more expensive certified reference materials.
The Spheres are supplied at a 1% concentration which is considerably higher than most certified materials thus the amount required to carry out the check is less and substantially more checks can be carried out.
They are available in a range of discrete sizes from 1µm (micron) to 140um. (see below)
The Spheres are manufactured using the “Ugelstad-process” and are extremely monisized, producing CV’s of less than 3% on the main peak of the distribution.
Each package of PsS Check Spheres contains a Certificate of Calibration . A Certificate of Traceability to NIST is available upon request (at an extra cost).
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