How many strips per tub?

50 strips per standard tub; 100 strip tubs available.

How accurate are they?

Within 0.2 of a unit on pH, within 1 ppm on chlorine. Sufficient for routine domestic testing.

Can I share with a hot tub?

Yes for free chlorine, bromine, pH and TA. CYA reading is irrelevant to hot tubs.

Strips or liquid kit?

Strips for routine speed; liquid kit when accuracy matters or you need to verify a strange reading.

12 months unopened; 6 months once opened. Always reseal immediately after each strip.

What chemistry do they use?

Multi-pad reagent strips: DPD-1 for free chlorine, DPD-3 for total, methyl orange for pH, bromcresol green for alkalinity, EDTA for hardness, melamine for CYA.

Why two chlorine pads?

Free chlorine reads the active sanitising fraction; total chlorine reads free plus combined. Subtract for combined.

Why not just CYA strip?

Multi-strips are more economical for routine testing. Dedicated CYA strips offer slightly better accuracy in 50-100 ppm range.

Dip 1 second only; tap dry; hold flat.

Reseal tub; replace if over a year old.

7-in-1 adds CYA; 6-in-1 covers everything else. CYA is essential for outdoor pools, optional for hot tubs.

Strips vs photometer?

Strips are colour-match (semi-quantitative); photometer is digital (quantitative). Choose by budget and accuracy need.

Pool 7-in-1 Test Strips (50 strips)

Name: Pool 7-in-1 Test Strips (50 strips)
Brand: ClearSpa
SKU: pt-1
Availability: InStock
Rating: 4.5 (7 reviews)

7-in-1 pool test strips reading free chlorine, total chlorine, bromine, pH, total alkalinity, calcium hardness and cyanuric acid in 15 seconds. Tub of 50 strips covers a full season.

Reads 7 parameters from one strip in 15 seconds.
Covers free chlorine, total chlorine, bromine, pH, TA, calcium and CYA.
Colour-match panel printed on every tub.
Tub of 50 strips covers a typical 6-month swim season.
Reliable accuracy for routine domestic pool testing.