hydroponic grows

Mineral Stones: Replace every 2 years

Turn the unit on use on/off key

proprietary formulation

1 x Knob assembly

Milwaukee MA9065 111,800 uS/cm Conductivity Solution MA911B/2 hydroponic growsDescription The performance of conductivity probes are affected by use due to residue build up and aging. MA9065 is a lab grade 111,800 S cm conductivity solution standard prepared against a NIST traceable potassium chloride solution that allows you to recalibrate your conductivity meter or tester. Check your meter or tester's manual to find the correct calibration standard for your meter. Conductivity readings are effected by temperature. To help