Hanna GroLine HI98331 Direct Soil EC Tester | Penetration Probe Air Filters + Odor Control It also gives a heavy

It also gives a heavy late-flower root mass somewhere to sit

The compact bar form factor integrates seamlessly into the ROI-E720 frame without adding significant weight or blocking primary light output

Its printed dot reads red while there is work left

That is the configuration a packaging line wants

Underneath the designation the fill is the ordinary Integra blend of plant-based glycerin and water

Hanna GroLine HI98331 Direct Soil EC Tester | Penetration Probe Air Filters + Odor Control It also gives a heavyWhat a Direct Soil EC Meter Saves You The old routine was a slurry. Take a sample, mix it with distilled water at a set ratio, wait, filter, then read the extract. It works, and it takes long enough that most people skip it. The HI98331 puts a stainless steel penetration probe into the substrate and reads it where it sits. Range runs 0 to 4000 uS cm, resolution 1 uS cm. One button, one point calibration, done automatically against a 1413 uS cm