Membrane Shape: Spherical glass

two stainless steel washers

such as with DI/RO (deionization / reverse osmosis)

Protect your home's plumbing and water-using appliances with the Culligan WH-HD200-C — a heavy-duty clear filter housing engineered for high-sediment environments

pour into a beaker or container and insert the tester or electrode to start the calibration process

Milwaukee MC125 PRO 2-in-1 Digital pH / ORP Controller digital wine tester Membrane Shape: Spherical glassDESCRIPTION The Milwaukee MC125 PRO pH and ORP controller is designed for people looking to measure and adjust pH and ORP levels automatically with one simple controller. Just set your pH and ORP parameters and let the Milwaukee pH Controller do the rest. The Milwaukee PRO pH ORP controller is preferred by people looking to dial in their testing program when they have an ongoing need to maintain levels. Common uses are nutrient tanks, aquariums,