AquaChek Yellow 511242A 4-in-1 free chlorine pool test strips, 50 count bottleAquaChek 4-in-1 Free Chlorine Test Strips for Swimming Pools, 511242A In stock$1072
AquaChek Yellow 511242A 4-in-1 free chlorine pool test strips, 50 count bottle
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AquaChek 4-in-1 Free Chlorine Test Strips for Swimming Pools, 511242A

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$1072 $12.99 17% OFF
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Quick overview

  • Four readings, one dip Free chlorine, pH, total alkalinity and cyanuric acid from a single strip.
  • Results in seconds Dip for one second, hold the strip level for 15 seconds, compare to the chart on the bottle.
  • Stabilizer included The cyanuric acid pad matters for outdoor pools, where sunlight burns off chlorine.
  • 50 strips per bottle Enough for a season of weekly testing.
  • For chlorine pools and spas Made for water sanitized with chlorine.
  • Stays fresh Snap the cap closed after every strip and leave the drying packet in the bottle.
Full description and specifications ↓

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Product details

AquaChek Yellow is the four way test strip for chlorine pools and spas. One strip reads free chlorine, pH, total alkalinity and cyanuric acid, the four numbers that decide whether the water is sanitized, comfortable and stable. There are 50 strips in the bottle, enough for a season of weekly checks.

How it works

Dip a strip, pull it straight out and hold it level for 15 seconds without shaking. The pads change color, and you match them to the chart printed on the bottle, reading pH, free chlorine, total alkalinity and stabilizer in that order. The whole test takes well under a minute and needs no reagents or vials.

Why the stabilizer pad matters

Cyanuric acid protects chlorine from sunlight. Outdoor pools and spas lose chlorine to UV all day, so knowing the stabilizer level tells you whether the chlorine you add will stay put. For the most accurate stabilizer reading, keep pH between 7.0 and 8.4 and total alkalinity at or below 240 ppm.

Keeping the strips accurate

Snap the cap shut as soon as you take a strip out, leave the drying agent packet in the bottle, store it at room temperature and use the strips before the date on the cap. Test weekly and jot down the results so you can see changes over time.

Specifications
Brand AquaChek
Manufacturer part number 511242A
UPC 090944012429
Tests for Free chlorine, pH, total alkalinity, cyanuric acid (stabilizer)
Count 50 strips
For Chlorine sanitized pools and spas
Storage Room temperature, cap closed tight, use by the date on the cap
Shipping weight 0.3 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

How do I use them?
Dip a strip in the pool water and pull it straight out. Hold it level for 15 seconds without shaking off the water, then compare the pH, free chlorine, total alkalinity and stabilizer pads, in that order, to the color chart on the bottle label.
Why test cyanuric acid?
Cyanuric acid is stabilizer. It shields chlorine from UV so it lasts in an outdoor pool or spa. For an accurate stabilizer reading, pH should be between 7.0 and 8.4 and total alkalinity at or below 240 ppm.
How often should I test?
Once a week keeps a pool on track. Writing down each result makes it easy to spot a trend before it becomes a problem.
How should I store the bottle?
Close the cap tightly right after taking a strip, keep the drying agent packet inside, store at room temperature in a dry spot, and use the strips before the expiration date printed on the cap.
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