Bluelab pH Probe fans-ventilation-ducting 0-5000 ppm

0-5000 ppm

those for Propane and those for Natural Gas

Fiberglass reinforced ducting with itch-free 3-ply permanent interior sound-deadening insulation

rely on black and white poly

Bluelab pH Probe fans-ventilation-ducting 0-5000 ppmA 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