Hanna PHEP 4 Tester With Replaceable Electrode CO2 Systems Designed for use with the

Designed for use with the Bluelab IntelliDose Controller and Bluelab Guardian Monitor Wi-Fi (excluding the Inline model)

Flush it for 3 to 5 minutes after each use

18 SEER2 on 36K

It really couldn't be simpler

The product is super-washed following the Dutch Method 1:1

Hanna PHEP 4 Tester With Replaceable Electrode CO2 Systems Designed for use with theWhen HANNA introduced its first version of the pHep (pH electronic paper) in 1986, it immediately revolutionized the standard in pH measurement. pHep's ease of use in combination with its affordability made it possible for non technical and technical personnel alike to measure pH on the spot, accurately and inexpensively throughout a variety of industries. Since its introduction, over 1 million pHeps have gone to satisfied customers around the world.