and HI9811-5 portable multiparameter meters

general-purpose pH probe designed for accurate pH measurement across laboratory and field applications

Ideal for those requiring an accurate alkaline reading

or RO water (will damage probe sensitivity)

Hanna Free and Total Chlorine CAL Check Standards - HI93414-11 858502005111 and HI9811-5 portable multiparameter metersThe HI93414 11 Free and Total Chlorine CAL Check Standards provide a simple solution to calibrating and validating compatible benchtop and portable photometers. This high quality set of standards is manufactured in our state of the art facility and comes supplied with a certificate of analysis. The certificate of analysis provides the lot number, reference values, and expiration date for traceability when certifying compatible free and total chlorine