GroLine 1413 µS/cm Conductivity Standard with Certificate (230mL Bottle) growing-accessories Includes SunBlaster's 18 inch LED

Includes SunBlaster's 18 inch LED with 6400K grow output

· Accepts most standard E39 Base HID lamps from 250W-1500W

This unit comes with the Quantanium dry tumbler

together with humic acids

What does "two-way" humidity control mean

GroLine 1413 µS/cm Conductivity Standard with Certificate (230mL Bottle) growing-accessories Includes SunBlaster's 18 inch LEDHI7031 023 is a GroLine 1,413 S cm conductivity standard that is prepared against a NIST traceable potassium chloride solution and supplied with a certificate of analysis. Hanna conductivity solutions have the lot number and expiration date clearly marked on the label and are air tight with a tamper proof seal to ensure the quality of the solution. Hanna's line of conductivity standards have been specially formulated to have an expiration of 5 years