Get the maximum life and filtration out of your BWT filter without harming your coffee equipment. Recommended always for the (Premium) filter with magnesium, as magnesium will show on your test strip as a hardness / mineral,

BWT's Aqua meter is an accessory that can be fitted to the filter head to monitor the flow of water through your filter cartridge. With just two buttons and an LCD screen, the Aqua meter can easily be programmed for your total water hardness and will track the total volume of water in gallons. Once it has been programmed, the meter will count down to 0 at which point it is recommended that your filter cartridge be replaced.

Takes 1 CR2032 Battery (included with purchase).

The BWT 3/8" Aqua meter with LCD Display is compatible for use with all varieties of BWT water filter cartridges including the Best Max Premium, Standard, Bestprotect and Best Taste.