Are Test Strips Reliable?

Yes—with caveats. Test strips are reliable for routine checks when used correctly and stored properly. They’re not lab-grade precise, but they’re accurate enough to:

• Monitor pH, alkalinity, sanitizer levels, hardness, and stabilizer
• Catch imbalances before they become problems
• Guide chemical adjustments with confidence

What affects reliability:

• Expired strips or ones exposed to moisture/light
• Improper dipping technique
• Reading delays (colors shift after 30+ seconds)

StepActionWhy It Matters1. Run the pumpCirculate water for 15–30 minsEnsures a representative sample2. Dip the stripSubmerge for 2 seconds, no swirlingPrevents over-saturation3. Hold stillWait 15–30 seconds flatAllows colors to develop accurately4. Compare quicklyMatch colors to chart within 30 secondsDelayed reading = skewed results5. Record & adjustLog results in your Spa Treatment AppTracks trends and prevents overcorrection

Pro Tips:

• Use natural daylight for color comparison
• Handle strips with dry fingers only
• Store in a cool, dry place with lid sealed
• Test 2–3 times/week, especially after heavy use or chemical additions