HM Digital ORP-200 Waterproof ORP Meter calibration accessories The ceramic pre-filter is maintained

The ceramic pre-filter is maintained independently of this cartridge

44 ppt) (included)

maintaining aquarium health

1x Ceramic Pre-Filter (1-year lifespan)

HM Digital ORP-200 Waterproof ORP Meter calibration accessories The ceramic pre-filter is maintainedORP 200: Waterproof Professional Series ORP Temp Meter ORP 200: Waterproof Professional Series ORP Temp Meter The ORP 200 is a professional grade ORP meter ideal for all ORP testing, including anti oxidant measurement, water purification applications, ionizers, agriculture, aquariums & aquaculture, chlorine monitoring, cooling tower disinfection, environmental testing, fruit & vegetable washing, hydroponics, metal finishing, ozone system monitoring,