Bluelab Replacement pH Probe for Guardian, Combo, & pH Meter

Easy to clean because of its bullet shaped glass bulb. Fully waterproof and less fragile than all-glass electrodes because of its tough polypropylene barrel. Gel filled (non-refillable) making it maintenance free and a double junction reference providing longer life!

Price: $81.95
$81.95
SKU: BLU24102