Wrekin Offer a few items to assist in car washing for a spot free finish.

7 products

Sort By

Featured
  • Sort By

Frequently asked questions

Yes — deionised (DI) water leaves no mineral deposits as it dries, which is what gives a spot-free finish without hand-drying.

The 6"x13" (4.6L) and 9"x19" (15L) options both use MB400 DI resin; the larger vessel holds more resin, so it treats more water before the resin needs regenerating or replacing.

Use a TDS meter on the outlet water — once readings start climbing above near-zero, the resin is exhausted and needs replacing.

Yes — the Dosal inline poly-phosphate inhibitor is a lower-cost option that reduces scale build-up rather than fully deionising the water, suited to washing machines and lighter-duty washing.

The HF10BB high-flow housing set uses 1" BSPF ports — check this matches your existing pipework before ordering.