How are the Phosphonate PN-10 kits calibrated?

Document ID

Document ID TE364

Published Date

Published Date 27/05/2017
Question
How are the Phosphonate PN-10 kits calibrated?
Summary
Phosphonate color wheel calibration
Answer
The Phosphonate test kit color wheel was calibrated using 100% active phosphonic acid. The dilution factor is worked into the color wheel measurements.