Hanna Electrode Cleaner, 16 oz garden-accessories Accessible nitrogen is the key

Accessible nitrogen is the key to a plant having a strong and vibrant internal structure

automatic shut-off valve

Your clear choice for HID lamps that provide long-lasting and reliable operation is Xtrasun

purchase the Oakton device separately

Hanna Electrode Cleaner, 16 oz garden-accessories Accessible nitrogen is the keyClean the liquid junction of your electrodes at least once a week to prevent clogging and to maintain accuracy. Immerse the electrode in the proper cleaning solution for about 5 minutes. Hanna Instruments offers a wide range of cleaning solutions, for general purpose and specific applications, to eliminate all kinds of dirt and deposits from the electrode, and thus ensure correct measurements.