Hanna Instruments 5000 uS/cm Conductivity Standard HI7039L (500ml) hydroponics Specially formulated for cleaning electrodes

Specially formulated for cleaning electrodes

Foliar applications may help suppress leaf diseases such as powdery mildew

NPK 0-0-43 + 18% S

Conical tip

Hanna Instruments 5000 uS/cm Conductivity Standard HI7039L (500ml) hydroponics Specially formulated for cleaning electrodesHI7039L is a premium quality 5,000 S cm conductivity standard that is prepared against a NIST traceable potassium chloride solution. 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. Hannas line of conductivity standards have been specially formulated to have an expiration of 5 years from the date of manufacture for an