Bluelab pH Probe LED Lighting Number of sites: 35

Number of sites: 35

Includes replaceable 9 volt battery and calibration solution

each consisting of a round 2-gallon pot with ½" fittings

Four way dimming feature 60%

Transplant plugs in soil or soilless hydrogardening applications

Bluelab pH Probe LED Lighting Number of sites: 35A replacement probe for Bluelab Combo and pH Meters, and Guardian Monitors. The Bluelab pH Probe is a replacement pH probe (electrode) suitable for use with Bluelab products that test the pH value of a solution. Unfortunately pH Probes do not last forever as they age through normal use and will eventually fail. With good care and use (keeping the probe tip wet and cleaning once a month) you will extend its life. The Bluelab pH Probe has a double