Spa Water Test Strips 3 in 1

3-in-1 hot tub test strips for free chlorine, bromine and pH. A colour-match read in 15 seconds makes them ideal for the daily routine check on a domestic spa.

• Reads chlorine, bromine and pH in 15 seconds.
• Uses a compact strip with 3 reagent pads.
• A tub of 50 strips covers 6-12 months of routine testing.
• Gives reliable accuracy for sanitiser and pH band checks.
• Works with bromine, chlorine and salt-water spas.

Sizes and prices

Available in 1 pot, 50-pot box.

• 1 pot: £9.11
• 50-pot box: £364.40

How to use

1. Take a sample 30 cm below the water surface, away from the jets.
2. Take one strip from the tub and reseal the tub straight away.
3. Dip the strip in the tub water for 1 second; do not shake it.
4. Hold the strip pad-side up for 15 seconds.
5. Match each pad against the colour chart on the side of the tub.
6. Log the readings and act on any out-of-band values.

Frequently asked questions

How many strips per tub?

50 strips per standard tub; 100-strip tubs are also available.

Will it read bromine?

Yes. The chlorine pad reads bromine via DPD cross-reactivity; multiply the chlorine reading by 2.25 for bromine.

How accurate is it?

Within 0.2 of a unit on pH and within 1 ppm on sanitiser, which is fine for routine domestic testing.

What pack sizes are there?

50 and 100 strip tubs.

3-in-1 or 6-in-1?

3-in-1 for daily speed; 6-in-1 adds alkalinity and hardness too. Most owners run a 3-in-1 daily and a 6-in-1 weekly.

What is the shelf life?

12 months unopened; 6 months once opened.

What chemistry does it use?

A DPD chlorine / bromine pad, a DPD total pad and a methyl orange pH pad.

Why DPD?

DPD-1 (free) and DPD-3 (total) are the world standard for measuring chlorine and bromine residuals.

Strips bleeding?

Dip for 1 second only; tap dry; hold flat.

Numbers not matching?

Reseal the tub; replace it if it is over a year old.

3-in-1 or 6-in-1?

3-in-1 is for daily speed; 6-in-1 adds alkalinity, hardness and CYA. Use both.

Strips or a liquid kit?

Strips for daily use; a liquid kit for accuracy when you are verifying an odd reading.