Check it on a routine basis, not only when results look unusual. For this system, the normal practice is to run a reference cement with a known specific surface area to confirm that the instrument and test procedure are still behaving as expected, then move back to routine samples once the check is acceptable.

The exact interval is usually set by your lab’s QC plan and method requirements. In practice, many cement laboratories verify the Blaine setup after maintenance, after any change to the cell or packing process, and whenever control results begin to drift, so the fineness data stays comparable from batch to batch.

To align this with your cement fineness workflow, review the Digital Blaine Apparatus – BlaineGen Classic page and request a quote. If you share your test cadence and reference cement setup, the check interval can be matched more closely to your procedure.