Bluelab Replacement pH Probe clone Instant all purpose cover

Instant all purpose cover

Rubber grip on top for easy use

If the rejection % falls under an acceptable level (typically 90%) it’s time to change the membrane

Increases root mass for better growth

This unique blend of ingredients helps your plants regulate enzymes that trigger specific reactions involved in maintaining optimal metabolism

Bluelab Replacement pH Probe clone Instant all purpose coverBluelab Replacement pH Probe for Guardian, Combo, & pH Meter The Bluelab Replacement pH Probe for Guardian, Combo, & pH Meter is 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! All probes are interchangeable between all Bluelab