Jug & Carbon Filter Test Kit

Prove your jug or carbon filter is earning its keep — test before and after the filter and see the difference on the strip. A healthy carbon cartridge takes chlorine down to zero; when it stops, it’s time for a fresh one.

• Results in 60 seconds
• Proven colour-match chemistry
• Free delivery on orders over £30
• UK-based support

Tests free chlorine, total chlorine, lead and copper, plus 16 additional analytes on the same strip.