Chemistry and particle size answer different questions.
Every application needs a suitable grade and testing. OPR confirms grades, processing and availability; no ultra-high-purity grade or certification is assumed.
01
Chemistry and mineralogy
Combine suitable chemistry and, where useful, XRD phase identification. Define analytes, detection limits, dry basis and units.
02
Physical properties
Size distribution, moisture, fines, grain shape and bulk density affect use and logistics. Agree on methods and tolerances.
03
Approval and lot documentation
Use a representative sample, application trial, control report and available safety documentation. Integrate dust management into handling and processing.
