Important: Never store pH or ORP electrodes in distilled or deionized water

01 calibration

recalibration available via mini-screwdriver trimmer

Calibrating regularly is best to keep your MI180 5-in-1 MAX Bench meter accurate for all your readings

Milwaukee MI407 Ammonia Low Range PRO Photometer aquarium test kit Important: Never store pH orLab Grade, Easy to Use, High Performance. Milwaukee MI407 PRO Photometer is for users demanding fast, reliable, repeatable results with ease of use. Description The Milwaukee MI407 PRO Photometer features manual zero point calibration and fast operation in a rugged design. The Milwaukee PRO Photometer is ideal for users in aquaculture, environmental, water treatment and conditioning , and lab applications. This meter is also ideal for educators that