Our experts say...

Normal chlorine and bromine test strips are not designed for use with the active oxygen system.

AquaChek MPS spa test strips (For use with Active Oxygen)

£14.65

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What it does...

Suitable for testing Active Oxygen in Hot Tubs and Pools

How it works...

These 3 in 1 test strips enable you to test the pH, alkalinity and MPS levels in your hot tub or swimming pool.

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