Test kits are expensive, so here are some testing tips that may help you conserve reagents and achieve accurate results...
- Get a sample bottle with a dropper style tip. Leslie's has nice ones they'll give you for free.
- Always rinse sample vials with pool water before and after use. With small sample size, even a bit of fresh tap water can skew results
- When using droppers, keep the bottle vertical. Squeeze only enough to allow the drops to just fall off the tip
- Go slow between drops (about 1 second between) and watch closely for color changes. On most tests, color hues are less important than determining the "endpoint."
- The endpoint for most "count the drops" type tests is when there is no more color change. Keep adding drops until there is no color change. Don't count the last drop that results in no color change
- For the first few tests, wipe the tip of the R-0009 TA bottle between each drop with a damp rag to eliminate static charge
- Use 10 mL sample size for FC/CC test (R-0870/R-0871/R-0003 reagents)
- Use 25 mL sample for TA test
- Use 10 mL sample for CH test
- For some tests, swirling is critical to achieve accurate results (there's a tool for that). Keep swirling the vial throughout the test.
- Get that tool when your budget permits. You'll be glad you did.
- Try to develop a routine and stick with it. Do the tests the same way each time.
Take some time to review:
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Know your recommended levels:
Use our tool to find ideal chemical levels for any swimming pool. Check TFP recommended levels on pH, free chlorine, cyanuric acid, and more.
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There are several items things every pool owner should know about swimming pool water. We share details on the basics of Pool Water Chemistry.
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