Brita Purity C150 Quell ST Filter Cartridge

What it does

Carbonate hardness is the part of tap water that turns into limescale as soon as the water is heated. The Purity C150 Quell ST takes it out before the water reaches the machine, so the boiler, the heating element and the brew group stay clear of the chalky build-up that otherwise means descaling far more often.

The same pass through the cartridge removes heavy metals such as lead and copper, cloudiness, organic pollutants and chlorine. Chlorine is the one you notice in the cup: it dulls the aroma of an espresso and leaves water with a flat, treated edge. Filtered water lets the roast come through instead.

Where it belongs

Brita builds the PURITY C range for the catering trade rather than the kitchen tap. It goes in front of espresso machines and fully automatic coffee machines, and just as readily in front of steam and bake ovens and vending machines — anywhere water is heated all day and a breakdown costs a service call.

Fitting and capacity

The cartridge screws into a matching filter head, for example the Purity C filter head, which is sold separately and is not included here. Once it is in place, the cartridge is rated for up to 2,408 litres or one year, whichever comes first.

Specifications

• Brand: Brita
• Range: PURITY C, for professional use
• Model: C150 Quell ST filter cartridge
• Main function: reduces carbonate hardness to prevent limescale
• Also reduces: lead, copper, cloudiness, organic pollutants, chlorine
• Capacity: up to 2,408 litres or 1 year
• Suitable for: espresso machines, fully automatic coffee machines, steam and bake ovens, vending machines
• Filter head: required, not included