Test Tube pH Pens flowering Features LED + CMH +

Features LED + CMH + HPS All From One Controller Up to 120 Units

Most growers have their own requirements

It is classified as a Group 3 carcinogen by the International Agency for Research on Cancer (IARC)

Aqua Master S300 Pro 2 pH Electrode: This replacement electrode is compatible with the Aqua Master Tools' Substrate pH/Temp meter S300 Pro 2

making it hard to spot issues like pests

Test Tube pH Pens flowering Features LED + CMH +Fits standard test tubes 16 x 50 mm or larger. Highly stable and accurate readings with a large LCD display. Designed for simple one hand operation. Automatically calibrates to pH 4, 7 and 10 buffers and can be adjusted to recognize some other non standard buffers as well. Features hold function, and auto power off with low battery indicator. General Purpose Glass Probe: EPA compliant for labs and wine Penetration Probe: for food & soil Flat Tip