Hanna 1413 uS-CM Calibration Solution -- 16 oz Commercial Plugs are pre-moistened with a

Plugs are pre-moistened with a proprietary nutrient blend including Trichoderma

and can be placed in any room in your home

light proof

The fixture measures 46

and soil-based gardening

Hanna 1413 uS-CM Calibration Solution -- 16 oz Commercial Plugs are pre-moistened with aTDS solution are produced with high quality potassium chloride in various concentrations. They are standardized using a conductivity meter calibrated with NIST potassium chloride. The 1413 ? S cm solution is the one best suited for general use. This solution is also available in combination kits with the pH 7 buffer for the easy calibration of multiparameter instruments.