Bluelab pH Probe Meter for Plant Germination

The Blue lab pH Probe is a replacement pH probe suitable for use with Blue lab 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 Blue lab pH Probe has a Double Junction Reference which provides a longer life than many other pH probes and is a gel filled non-refillable probe, so apart from cleaning is maintenance free. Replace only the pH probe, not the whole meter.