What is the best way to test your pool water
John Johnson
Updated on March 22, 2026
The two most popular ways of testing pool chemicals are pool test strips and pool testing kits. Whether you use a kit or a strip, it should measure chlorine and pH levels. These measurements show two of your pool’s most important chemical readings.
What is the most accurate way to test pool water?
The two most popular ways of testing pool chemicals are pool test strips and pool testing kits. Whether you use a kit or a strip, it should measure chlorine and pH levels. These measurements show two of your pool’s most important chemical readings.
Are pool water test strips accurate?
Are pool test strips accurate? Pool test strips provide accurate readings of your pool’s chemistry. In fact, pool test strips are a more reliable method of testing your pool water than a liquid test kit. Pool test strips eliminate the risk of human error.
Can you test pool water yourself?
Using a Liquid Test Kit There are very advanced liquid test kits, but for home use, just stick with pH and chlorine or phenol red and OTO. Phenol red is a red chemical you add to a small sample of water to check the pH. The redder the water, the higher the pH. OTO is the chemical that tests for total chlorine.Are digital pool testers accurate?
The digital pH reading is the most accurate one and some Health Departments use digital testers themselves also. ORP is a fantastic way to test if the water is at the safest level to swim in. Again, if you service commercial pools this would be a great digital tester to invest in.
How can I test my pool water without a kit?
Strip testing is a fast and easy solution to testing the pH of your pool’s water. All you need to do is simply dip a pH strip tester in your pool’s water and compare the color it turns to a chart. Most pH testing strips come with a chart that you can use to determine the pH of your pool.
Which pool test strips are most accurate?
The choice for the top pick is the AquaChek 551236 7-Way (100 strips). They measure seven different chemical levels in your swimming pool with accuracy and reliability well within acceptable limits for daily use.
How fresh does pool water need to be for testing?
THE CONTAINER Repeat this process between pH, alkalinity, and chlorine tests. Most pool companies require at least 8oz.of water for pool water testing.Do digital pool water testers work?
The HM Digital TDS-EZ Water Quality TDS Tester is another great digital pool water tester. It’s accurate to within 3%, which makes it accurate enough for just about any use. It also saves measurements with the hold button, so you can have enough time to read them and record them if you need to.
What do pool test strips mean?Test Strips These strips determine chemical levels of substances in your pool such as chlorine, bromine, pH, alkalinity, and cyanuric acid.
Article first time published onHow much water is needed for a pool sample?
All we need is approximately 8 oz. of water, and make sure to rinse your bottle before each sample is collected. An often overlooked aspect of water analysis is timing. If you’ve added chemicals to your pool, wait at least 24-48 hours before collecting your sample.
When should I take my pool water sample?
Water tests should be completed before adding any Chemicals. On that same note, pool chemicals can take up to a day (sometimes longer depending on the product) to have their full effect seen in a water test. Therefore, it is a good rule of thumb to wait at least 24 hours after adding chemicals to test your water again.
Does adding chlorine increase pH?
Using liquid chlorine raises the pH of the water. Liquid chlorine does not raise pH. When added to water, liquid chlorine (which has a pH of 13) makes HOCl (hypochlorous acid – the killing form of chlorine) and NaOH (sodium hydroxide), which raises pH. … So the net effect on pH is zero (or almost zero).
What is the cyanuric acid in pools?
In the pool industry, Cyanuric Acid is known as chlorine stabilizer or pool conditioner. Cyanuric Acid (CYA) is a pool balancing product used to help chlorine last longer. Chlorine, in its natural form, is unstabilized—which means it degrades when exposed to sunlight.
What should pool pH be?
As pH falls below 7.0 the acidic condition will cause irritation to the eyes and mucous membranes of swimmers. Low pH (acidic water) can also corrode metal parts of a pool system and damage the plaster finish. The State standard for pH is 7.2-8.0 (Recommended range 7.4-7.6).
How do I check the pH level in my pool?
Add five drops of Solution 2, a phenol red indicator, and mix by gently swirling. Compare the color with the pH color standards on the plastic tester to determine the pH level of your pool water. Note: Don’t perform this test if the residual chlorine is above 3.0, as you will not get an accurate pH reading.
Does the Clorox pool app work?
Works perfect with the strips. I’m so happy [that] it does more than just chlorine and pH. This pool app is amazing!! I couldn’t completely clear my water up and this app told me exactly what I needed.
What does pHin test for?
Introduction to pHin, the pHin Smart Water Monitor for Pools and Hot Tubs that measures pH, temperature and sanitizer levels over 1,000 times per week and notifies you when it’s time to add chemicals, providing exact dosing to simplify pool and hot tub care.
Which pool test kit should I buy?
- Our #1 Pick: Poolmaster Chemistry Case. BUY ON AMAZON. …
- Taylor Technologies Test Kit. BUY ON AMAZON. …
- LaMotte Test Kit. BUY ON AMAZON. …
- AquaChek Test Kit. BUY ON AMAZON. …
- AquaChek Swimming Pool Test Strips. BUY ON AMAZON. …
- Taylor Technologies Test Kit. BUY ON AMAZON. …
- Pentair Chlorine Kit. BUY ON AMAZON.
What kind of test kit do I need for my pool?
- The most inexpensive and widely used method of water testing – test strips – is fast, easy, and fairly accurate. …
- Liquid test kits are an excellent way to determine chemical levels in your pool and maintain crystal clear water at all times.
Are Clorox pool test strips accurate?
The strips are super easy to use and their app is excellent. HOWEVER, these are not accurate. Mine kept reading that the PH was super high, however multiple tests at the pool store indicated that it was actually extremely low.
How can I test my chlorine level without a kit?
Get a small sample of your pool water into a clear container. Then, put a few drops of the red cabbage juice and wait to see if the color starts to change or remains the same. Your swimming pool water will change color and tell you how your pH levels are.
What is TDS in pool water?
Total dissolved solids is a measurement of everything that has ever dissolved in your swimming pool water. This includes minerals that separate from your pool chemicals, such as calcium and sodium, and every bit of dissolved dust, pollen, swimmer waste, algae remains – everything!
Is the water guru worth it?
For more in-depth testing, like bromine and alkaline levels, you’ll have to go with the pricier yet more capable pHin or Sutro systems, because the WaterGuru only tests for chlorine, pH, and water flow. Still, if that’s all you need (and if you hate subscription fees), then the WaterGuru Sense is a great choice.
How long do I wait to test pool water after adding chemicals?
- pH, Clarifier, Alkalinity — For these types of water-balancing chemicals, it’s suggested that you wait at least 20 minutes before you get into the water.
- After you shock the pool — As soon as your chlorine levels reach 5 ppm or lower, it’s officially safe to swim.
How long can pool water sit without chemicals?
I think the answer to your question is about 3-6 days. The problem is that the chlorine that you need to keep the bacteria in check is used up more quickly as the temperature rises, the activity increases, and as sweat and other body stuff is put into the pool.
What does baking soda do for a pool?
Baking soda, also known as sodium bicarbonate is naturally alkaline, with a pH of 8. When you add baking soda to your pool water, you will raise both the pH and the alkalinity, improving stability and clarity. Many commercial pool products for raising alkalinity utilize baking soda as their main active ingredient.
Is too much free chlorine bad?
But excessive exposure to chlorine can cause sickness and injuries, including rashes, coughing, nose or throat pain, eye irritation and bouts of asthma, health experts warn. Instructions for safely chlorinating a pool usually call for a maximum of four parts per million when people are in the pool.
How do I use pool test strips?
Simply dip one test strip into pool or spa water at elbow’s depth and remove immediately. Shake once to remove excess water. Hold strip level and visually compare the strip to the color chart included on the bottle. Select the corresponding test result colors within 15 seconds of wetting.
Should I adjust chlorine or pH first?
Rule of thumb is to do the PH first. And do not bother to drive to pool store to spend the extra money for a PH DECREASER. Buy a plain baking soda for 50cents a pound in Walmart! Chlorine will not work fully until your PH is in the proper range.
Is it OK to swim in a pool with high pH?
A swimming pool with a high pH is considered alkaline, which can cause issues with the pool and swimmers. … This means bacteria and other microorganisms may thrive in your pool. While you cannot see with your naked eye, bacteria in your pool water can be harmful when they enter your body.