Hanna HI97701-11 Free & Total Chlorine CAL Check Standards hydraulic conductivity testing the Solo has a field-replaceable

the Solo has a field-replaceable sensor and battery

Falling flow

roughly a third of what the bare sensor needs

Fast Linear

Hanna HI97701-11 Free & Total Chlorine CAL Check Standards hydraulic conductivity testing the Solo has a field-replaceableThe Hanna HI97701 11 is a set of CAL Check performance verification standards for free and total chlorine photometers a fast, traceable way to confirm your meter is reading correctly without sending it to a lab. Key features NIST traceable CAL Check standards with a Certificate of Analysis for traceability Verify photometer accuracy at any time; recalibrate to the standard if out of specification Reusable, ready made standards Use with: Hanna HI977XX