Water softening cartridge Klarwod ST10 — replacement cartridge for domestic water softener

The Klarwod ST10 water softening cartridge is a replacement cartridge designed for domestic water softeners in ST10-compatible housings. It reduces water hardness through ion-exchange resin, helping to prevent scale buildup in plumbing and household appliances. The cartridge is intended for routine replacement and ensures continued soft water performance for washing, bathing and appliance operation.

Advantages

The cartridge delivers consistent hardness reduction by using a resin-based softening process suited to household supply conditions. It helps extend the service life of kettles, boilers and washing machines by lowering lime scale formation, and it improves detergent and soap performance by providing softer water. Installation is designed to be straightforward in systems that accept the ST10 format, enabling routine cartridge changes without specialised tools.

Suitable for

• Domestic water softener units compatible with ST10 cartridges
• Homes with hard or moderately hard mains water
• Appliance protection for kettles, boilers, dishwashers and washing machines
• Improving cleaning and lathering efficiency of soaps and detergents

Key specifications

• Softening method: ion-exchange resin
• Intended use: household/domestic water treatment
• Form factor: cartridge for ST10-compatible housings
• Function: reduction of calcium and magnesium ions to limit scale formation

How to use

Remove the spent cartridge from the softener housing according to the softener manufacturer’s instructions, flush the housing if recommended, and insert the Klarwod ST10 cartridge until it seats securely. Follow any system-specific priming or bypass procedures before returning the softener to service. Observe local guidelines for pressure and temperature limits of your softener unit when installing the cartridge.

Usage recommendations

Replace the cartridge at intervals recommended by your water softener manufacturer or when water hardness returns to undesirable levels. Periodic system maintenance, including resin regeneration cycles where applicable and following the softener’s operating instructions, will help maintain optimal softening performance and protect connected appliances.