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Insta4 Test Strips
Quick, easy, and accurate water testing for your hot tub or spa.
Test Free Chlorine, pH, Alkalinity, and Hardness in just 15 seconds.Use with Spa Fuel’s Essentials Range colour-coded system to balance your spa water effortlessly.
No guessing, no stress — just dip, wait, and match.
Dip the Strip:
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With clean, dry hands, remove one test strip from the container.
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Dip the strip into your spa water about 15–30 cm (6–12 inches) below the surface.
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Hold it underwater for 2 seconds, then remove it immediately.
Hold Strip Still:
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Do not shake the strip.
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Hold it level, with the test pads facing up.
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Wait 15 seconds for the colours to fully develop.
Compare to the Colour Chart:
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Match the test pad colours to the Insta-4 colour chart on the bottle or use the Spa Fuel label to guide you.
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Read the results in this order:
Chlorine → Alkalinity → pH → Hardness
Balance Your Water:
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Use the Spa Fuel water balance guide to adjust chemical levels as needed.
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Always balance in this order for best results:
Chlorine → pH → Alkalinity → Hardness
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