The pH sensing bulbs become less sensitive over time so make sure that you are calibrating regularly to keep your PRO Plus pH meter accurate

pH Method: Phenol red colorimetric

The Milwaukee PRO pH controller is preferred by people looking to dial in their testing program when they have an ongoing need to maintain levels

Pre-mixed for convenience and accuracy

Hydroponics and agriculture

Active Air Indoor-Outdoor Thermometer & Hygrometer with Remote Probe alkaline water pitcher The pH sensing bulbs becomeActive Air Indoor Outdoor Thermometer & Hygrometer with Remote Probe Take full control of your grow room environment with the Active Air Indoor Outdoor Thermometer & Hygrometer. Built from durable materials engineered for the demanding climate of indoor growing spaces, this essential monitoring tool delivers real time temperature and humidity readings on a large, easy to read display so you always know exactly what's happening in your grow space. The