Bluelab OnePen Replacement Probe Knockbox Fully textured surface for superior

Fully textured surface for superior wet and oily grip

it is robust as well as easy to maintain

Enclosed Reflector features:

UHMW Polyethylene SaddleTwister

It is perfect for use as a part of a hydroponic nutrient solution because it is inexpensive

Bluelab OnePen Replacement Probe Knockbox Fully textured surface for superiorA replacement pH, Conductivity (EC), and Temperature Probe for Bluelab OnePen (PENONE) Maximise the life & accuracy of your Bluelab OnePen Features: Extends the life of your Bluelab OnePen minimising the need for full device replacements Quick and simple to replace, reducing downtime and keeping your OnePen functioning optimally Built to last with a double junction pH probe and titanium EC electrodes Delivers precise pH, Conductivity (EC), and