For geologists who insert CRMs, blanks and duplicates
Band every reference material, blank and duplicate in your batch against the numbers you set, and see which batches to look at first. Paste two small tables and the charts, band table and batch ranking are done.
Buy Now — $19Shewhart-style charts in analytical order, with lines at the expected value and at your warning and limit multiples of SD. Points outside a band stand out in gold.
Blanks against detection limit times your multiplier. Duplicates by HARD % against your tolerance, with pairs below your floor shown separately instead of mixed in.
A roll-up of controls, outside-band counts and CRM results beyond limit per batch, sorted so the batch with the most to look at is first. Plus mean and bias % per reference material.
The bands are the numbers you type, with common defaults to start. Band edges are inclusive and computed in exact decimal arithmetic, so a duplicate at exactly 20.00% reads the same every time. Download the full band table as CSV.
Built by Mulkern AI Systems for working geologists: no account, no upload, no subscription. Your control tables stay on your own machine.
One-time purchase. No subscription.