Testing pool water - The pool and spa test strips tests your pool and spa water for six different chemical levels – Free Chlorine, Bromine, Total Chlorine, Alkalinity, pH & Total hardness. There are 50 test strips that come in the glass bottle. The test is very simple to perform. Simply immerse the test strip into the water to a depth of 6 inches for 2 seconds.

 
Total Dissolved Solids, or TDS, is the measurement of all dissolved substances in your pool water. Common dissolved solids are magnesium, potassium, sulfates, carbonates, irons, other metals, minerals, carbonates/bicarbonates, anionic and cationic substances, and salts. Everything you add to the water increases its TDS, …. Tokyo to nikko

Standing bodies of water tend to attract bacteria, insects, and other undesirable contaminants. Water quality standards protect the users of pools in both public and private settings to ensure that the water is safe to swim. In this article, I will go over water quality standards, how they work, and how these standards may apply to your pool.Using Test Strips to Test Your Pool Water. The most common way for above ground pool owners to test their water would be by using test strips. The Pool Check 3-in-1 test kit will let you determine your pool’s chlorine, pH and alkalinity levels. These are the 3 most important chemical levels that you need to pay attention to. Pool Testing Simplified. Testing is an important part of pool ownership. It is the only way to ensure water is clean and clear of algae and other contaminants. We also know how difficult understanding test procedures and parameters can be. Learn about the basics of pool testing, how to test, and the chemistry behind a properly balanced pool. 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) ...A: For more accurate test results, take your water sample in a dead spot in the pool – not in front of a return jet or skimmer – by dipping about a foot deep into the water. Collect your sample when the pump has been running for at least an hour. Also be sure to bring your sample in as soon as possible after it was collected.The acceptable range of pH is from 0 to 14. When balancing your pool’s water, you should strive for 7. The mid-range of 7 is ideal because it’s neutral; 0 is the most acidic and 14 is the most alkaline. However, for pool water to be genuinely balanced, pH can fall within the narrow window between 7.2 and 7.8.Safety first, my friends. Fun fact: hypochlorous acid (HOCl or HClO) is the chlorine compound that actually kills algae and destroys germs. When you test the pool water’s chlorine levels, you’re actually testing …Find a 5-Gallon Bucket. 2. Fill the bucket to about an inch from the top. 3. Put the bucket on the first or second step inside your pool. 4. Mark where the water level is on the inside of the bucket. 5. Mark where the pool water level is on the outside of the bucket.Second, rinse out the test cell, and add 10 drops each of DPD #1 and #2 reagents, THEN add just a few drops of pool water, and see if the sample turns pink, indicating a high chlorine level. To determine an approximate chlorine level, dilute the test sample with bottled water, half and half, and multiply the reading by 2 to obtain the full ...How to Test Your Pool Water (3 Ways) Testing the Basics. Specialized Tests. Pool Water Testing: Simplified! Pool Water Testing: Why It Matters. Have you …Pool water testing is an essential part of a pool maintenance routine. When you know how to test pool water, you’re one step closer to making sure your …Pool testing determines the overall water balance and what chemicals must be added at any given time. Bottom line: testing is essential to pool ownership and …Chlorine bleach can be used to treat swimming pool water, according to How Stuff Works. The amount of bleach required varies depending on the concentration of the bleach and the am...How Do You Check For a Pool Leak With a Bucket Test. 1. Find a 5-Gallon Bucket. 2. Fill the bucket to about an inch from the top. 3. Put the bucket on the first or second step inside your pool. 4. Mark where the water level is on the inside of the bucket.HD Supply Facilities Maintenance makes pool testing easier at your property by breaking down your test kits or test strips for immediate and accurate pool ...Aug 28, 2019 · Regularly testing pool water is a cost-efficient means to solve small imbalances before they become bank-breaking disasters. Testing your pool is also a proactive way to maintain the aesthetic appeal and lifespan of your pool. Left unattended, a slightly diminished pH level can result in a destroyed pool pump, corroded ladders, and pockmarked concrete infested with algae. Chlorine eradicates ... Most pool testing kits allow you to test your total alkalinity, along with pH, free chlorine, calcium hardness, and cyanuric acid. Test strips are more widely used because they’re easier, faster, and cheaper than other testing methods. A strip is simply dipped into your pool water, causing it to change color based on your total alkalinity.Pool Water Chemicals. There are numerous types of chemical products that are formulated to clean or balance swimming pools or pool parts. For example, pool shock chemicals like calcium hypochlorite (cal hypo) and sodium dichloro-s-triazinetrione (di-chlor) are used to sanitize water—usually on a weekly or biweekly basis—by raising free ...7 Best Pool Test Kits – Review. 1. Best Overall: Poolmaster 22260 5-Way Swimming Pool & Spa Water Test Kit. Tests for: Chlorine, Bromine, pH, Acid Demand, and Total Alkalinity. The Poolmaster 22260 is our best overall pool test kit thanks to its versatility, accuracy, and ease of use despite being a liquid pool test kit.Pool water testing is vital for sustaining a healthy and secure swimming environment, preventing issues like cloudy pool water, and enabling the efficient use of pool chemicals. By testing and balancing your pool water regularly, you ensure the effectiveness of disinfection, water quality, and the longevity of your pool surfaces and equipment.Clorox Pool & Spa Multi-Use Smart Strips test six different swimming pool water parameters to help you keep your pool balanced and swim-ready. These strips test your water's hardness, chlorine, pH, alkalinity, and stabilizer levels. Test manually pool side with the level indicators shown on the pool test strip bottle or use the Clorox Pool App ...This video is an Introduction to basic water testing for swimming pools. We hope that this video will encourage homeowners that testing your water is simple ...Top Features: 1. Smart Testing: Use your favorite water test method and open the Pooli app. Manually enter the results or join the Pool Club to scan your test strip with your phone's camera. 2. Interactive CSI Tool: Utilize our interactive Calcite Saturation Index (CSI) tool for understanding and preventing potential issues.Watch this video for instructions on how to test the alkalinity of your pool. Alkalinity indicates the water's ability to handle pH changes. Learn how to tes...Without launching into a full chemistry lesson, you will need to know the ideal ranges for a healthy, balanced swimming pool: pH: 7.2 – 7.6. Alkalinity: 80 – 120 ppm. Calcium Hardness: 180 – 220 ppm. Chlorine: 1-3 ppm. Bromine: 3-5 ppm. Cyanuric Acid: 30 – 50 ppm. This is what you are aiming for. Let’s see what’s out there to help ...2. Dip the Test Strip into the Water. Dip the pool test strip into the water and quickly remove it. There’s no need to keep it submerged or soak it in the water. Just make sure your finger doesn’t go into the water. 3. Allow the Test Strip to Develop and Measure Results. Hold the strip in the air for about 15 seconds.Nov 3, 2016 · Not my highest quality video with my kids distracting me and all off the top of my head. There are things that I missed but over all the basics are there to ... Nothing says summertime like a refreshing dip in the crystal blue waters of a swimming pool. The experience is even better when that pool is in your own backyard for your entire fa...All-New 2024 Pool and Spa Test Strips 7 in 1 Quick SuperAccurate Swimming 150 Pool Test Kit - Hot Tub Test Strips & Pool Water Testing Strips for pH Chlorine Bromine Hardness Alkalinity Cyanuric Acid. dummy. Poolmaster 22211 Smart Test 4-Way Pool and Spa Test Strips - 50ct. Try again! Details . Added to Cart. Add to Cart .Jul 19, 2016 ... Pool-water chemical levels to test and balance. The four chemical levels critical to healthy water are free chlorine, calcium hardness, pH, and ...Welcome to our definitive guide on pool water phosphate levels. Maintaining proper water chemistry is essential for keeping your pool safe, clean, and inviting, and monitoring phosphate levels is an important part of that process. In this guide, we’ll explore the role of phosphates in your pool water, the ideal phos level for your pool, how to test …Efficient: The swimming pool water test strips take the place of larger swimming pool test kit sets. The pool chemicals test strips take …Without launching into a full chemistry lesson, you will need to know the ideal ranges for a healthy, balanced swimming pool: pH: 7.2 – 7.6. Alkalinity: 80 – 120 ppm. Calcium Hardness: 180 – 220 ppm. Chlorine: 1-3 ppm. Bromine: 3-5 ppm. Cyanuric Acid: 30 – 50 ppm. This is what you are aiming for. Let’s see what’s out there to help ...Typical water tests include measurements for Free and Total Available Chlorine, pH, Total Alkalinity, Calcium Hardness, and Cyanuric Acid. If your pool has a salt system, the salt level should also be checked. For test kits, take your water sample from 12 to 18 inches below the surface after the circulation system has been on for an hour.Fill the test tube to 10 mL line with the water sample. Add a dipper of R-0870 (Taylor says 2 but save yourself some powder, 1 is plenty!). If FC is present, the sample should turn pink. If the sample does not turn pink, FC is 0. Add R-0871 dropwise until the color changes from pink to colorless. Multiply drops by 0.5.Free chlorine levels – These should sit somewhere between 2.0 and 4.0 ppm. Total chlorine levels – The total chlorine should be 1 to 3 ppm. Calcium hardness – Your pools calcium hardness levels need to be between 200 – 400 ppm. pH levels – Anything from 7.4-7.6 are considered good pH levels. Total Alkalinity – Ideally, aim for total ...Doughboy Pools have been a popular choice among homeowners for their durable construction and long-lasting performance. With a reputation for quality, these pools are designed to w...Test strip: This method also is quite popular with residential pool service techs. The strip is dipped into the water sample, enabling the reagents on the strip to react with chemicals in the water. The reaction will change the color of the pads on the end of the strip. Again, a color comparator quickly shows the level of the factor being tested.Most pool water test kits will give you everything you need to measure important pool chemicals such as: Chlorine: Maintaining a proper chlorine level is critical for keeping your swimming pool water safe, sanitized, and healthy. pH: If your pool’s pH is too high or too low, you could end up battling other maintenance issues like algae ...If you are worried about testing accuracy or would prefer to let a professional pool company handle the chemicals, 1 Pool Care provides masterful water testing services in Perth, Australia. Find out how 1 Pool Care can help with all your pool maintenance needs — call 0456 75 75 75 today and speak to our representative about affordable pool water … The Leslie's AccuBlue water testing system delivers state-of-the-art technology so you can easily keep your pool water healthy and beautiful. Tiered Savings $20 Off 100+, $30 Off $150+, $50 Off $250+ | Use Promo Code SAVE50 Pool Water 101: Chemicals, Testing & Balancing. Pool owners can face common issues like low alkalinity, high calcium hardness, or out-of-control algae blooms, especially after closing the pool for winter. A basic knowledge of pool water chemistry can help you correct these issues — or, better yet, avoid them altogether.Pool water testing is an essential part of a pool maintenance routine. When you know how to test pool water, you’re one step closer to making sure your …Learn how to test your pool water with a liquid kit, test strips, or a professional. Find out the normal chemical levels, how often to test, and …Best Ways 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 …Owning a pool is a major responsibility. You have to make sure your filter is running at the right pressure, that the water level in the pool is right, keep the skimmer basket empty, adjust the filter timer according to the season, and keep the pool clean, just to name a few maintenance duties. It may be tempting to overlook the chemical balance of the water.How has NASA helped improve our air and water? Visit HowStuffWorks to see how NASA has helped improve our air and water. Advertisement In the summer of 1973, a trio of astronauts a...During pool water testing processes, you are likely to encounter some disruptions. Excess concentration of chlorine and the existence of biguanide lead to an abnormal change of color. Test results often result in yellow or green color when there’s any form of disruption compared to the typical pink color.Every year, hundreds of thousands of people take the GED test. How does the GED test work? Find out at HowStuffWorks. Advertisement "A cook decides to recover some table salt that ...To protect the public health the department has adopted sanitation and safety standards for public pools in Chapter 64E-9, Florida Administrative Code (opens in a new …Jul 15, 2020 ... Home testing is absolutely necessary to keep an eye on all pool chemicals such as chlorine levels, pH, alkalinity and hardness, although ...E Coli and Coliform Water Test Kit | Water Testing Kits for Drinking Water Pool Pond Lake Well . AquaVial allows you to see what is in your water quickly; pour the water into the provided test vials to see if the water changes colour. If the water turns yellow, it is safe; if the water turns purple, E.coli or coliform bacteria are present ... As the summer heats up and the pool gets more use, it’s important to ramp up your water testing. Test at least once a week when temperatures are above 70ºF, increasing to at least twice a week at the peak of summer. If your pool is frequently used by small children or pets, you should test the chlorine more frequently — perhaps even daily. Learn how to check pool water quality with test strips or kits, and adjust chlorine, pH, total alkalinity, and calcium hardness levels. Find out the ideal ranges for each parameter and the best time to test …Jul 15, 2020 ... Home testing is absolutely necessary to keep an eye on all pool chemicals such as chlorine levels, pH, alkalinity and hardness, although ...Key Takeaways. To maintain a clean and safe pool, test your water weekly, increasing to 2-3 times weekly during warmer, high-use months. The monitoring parameters include pH, chlorine/bromine levels, total alkalinity, and calcium hardness. Post-storm and heavy usage may require additional testing.Top Features: 1. Smart Testing: Use your favorite water test method and open the Pooli app. Manually enter the results or join the Pool Club to scan your test strip with your phone's camera. 2. Interactive CSI Tool: Utilize our interactive Calcite Saturation Index (CSI) tool for understanding and preventing potential issues.Testing salt pool water is the same as testing chlorine pool water. Simply collect a sample of water and use our test strips to compare the balance and pH of your pool. Alternatively, bring the sample to us, and we’ll conduct a detailed water analysis and explain the diagnosis for you.Three-Way Test Strips · Dip the entire test strip into the pool water for one second, remove, and allow 30 seconds for the pad colors to fully change. · Match .....To get an accurate reading with a liquid reagent, clean the test container and take water from your pool as you would for the test strip. Then, mix the reagent into the water without touching the lid and contaminating the test, and check the color. Chemical reaction test: Place a chlorine tablet or pool shock over stains.If you are worried about testing accuracy or would prefer to let a professional pool company handle the chemicals, 1 Pool Care provides masterful water testing services in Perth, Australia. Find out how 1 Pool Care can help with all your pool maintenance needs — call 0456 75 75 75 today and speak to our representative about affordable pool water …Liquid Test Kits: Liquid test kits involve the use of reagents and color-matching vials to determine the chemical levels in the pool water. By adding specific reagents to water samples and observing the resulting color changes, pool owners can assess chlorine, pH, alkalinity, and other parameters with precision.Testing the phos level in your pool water is a simple process that can be done using a testing kit. These kits are available at most pool supply stores and provide accurate readings of the phos level in your pool water. It is recommended to test the phos level in your pool water regularly, especially after heavy rain or a period of increased usage.Testing calcium hardness is one of the three main water balancing tests you need to do to monitor how well your pool water is balanced, and adjust the calcium hardness level if necessary. Keeping your pool water hardness in check can help reduce the chance the water becomes too corrosive or encourages the formation of water scale , and help ...Mar 1, 2024 · If you are testing pool water below 70, take it inside to warm up or run hot tap water to the water sample until it gets warmer. Step 1: Gather a Good Water Sample. Use the CYA bottle the testing kit provides or a clean cup and go to an area in the pool’s deep end that is away from skimmers or return jets. Oct 8, 2023 · What to Test in Your Swimming Pool Water (Overview) When testing your swimming pool water, I recommended going over and above the standard requirements. Using a comprehensive test kit to test your pool water’s chemistry, you can avoid and prevent countless problems associated with unbalanced pool water. Here are my recommendations for minimum ... Pool water testing is vital for sustaining a healthy and secure swimming environment, preventing issues like cloudy pool water, and enabling the efficient use of pool chemicals. By testing and balancing your pool water regularly, you ensure the effectiveness of disinfection, water quality, and the longevity of your pool surfaces and equipment.Sep 22, 2023 · Test your pool water regularly to monitor phosphate levels. Regularly clean your pool and remove debris such as leaves and grass clippings to reduce the amount of organic matter and phosphates in the water. Read the bottle before using algaecides, clarifies, and other chemical treatments, as these chemicals may contain phosphates. Pool Water Testing. This eLearning covers how to effectively test swimming pool or spa water for free chlorine, total chlorine, and pH (potential hydrogen) using a photometer and has been created in conjunction with PASA - Pool and Spa Awards.E Coli and Coliform Water Test Kit | Water Testing Kits for Drinking Water Pool Pond Lake Well . AquaVial allows you to see what is in your water quickly; pour the water into the provided test vials to see if the water changes colour. If the water turns yellow, it is safe; if the water turns purple, E.coli or coliform bacteria are present ...Doughboy Pools have been a popular choice among homeowners for their durable construction and long-lasting performance. With a reputation for quality, these pools are designed to w...Swimming pool chemicals at best prices.Discover the best Swimming Pool Water Test Kits in Best Sellers. Find the top 100 most popular items in Amazon Patio, Lawn & Garden Best Sellers.Typical water tests include measurements for Free and Total Available Chlorine, pH, Total Alkalinity, Calcium Hardness, and Cyanuric Acid. If your pool has a salt system, the salt level should also be checked. For test kits, take your water sample from 12 to 18 inches below the surface after the circulation system has been on for an hour.POOL360 WaterTest allows users to test water the way they choose and does not lock retailers into one specific water testing method. The software is backed by the complete, professional dealer only specialty chemical lines: Regal, E-Z Clor and Life Spa. The software is branded with a dealer's logo on the detailed prescription.Balancing your pool water chemistry is key to maintaining a healthy and safe swimming pool! Knowing how to properly test your water will take the guesswork a...HD Supply Facilities Maintenance makes pool testing easier at your property by breaking down your test kits or test strips for immediate and accurate pool ...Chlorine bleach can be used to treat swimming pool water, according to How Stuff Works. The amount of bleach required varies depending on the concentration of the bleach and the am...Jan 6, 2024 · With an average rating of 4.5 out of 5 stars, the Taylor Technologies Complete Test Kit is loved by pool owners worldwide. This kit boasts more than 2,500 reviews, 90% of which rate this product a 4 or 5 stars. Other testers particularly love that this product is accurate and comes with handy instructions. A cold stimulation test involves placing your fingers in ice water to diagnose Raynaud's syndrome. Raynaud's is a condition that causes brief episodes where little or no blood flow...pH: 7.4-7.6. Total Alkalinity: 80–120 ppm. Calcium Hardness: 200–400 ppm. Cyanuric Acid: 30–50 ppm. For even better understanding of comprehensive pool chemistry, check out …Jan 6, 2024 · With an average rating of 4.5 out of 5 stars, the Taylor Technologies Complete Test Kit is loved by pool owners worldwide. This kit boasts more than 2,500 reviews, 90% of which rate this product a 4 or 5 stars. Other testers particularly love that this product is accurate and comes with handy instructions. Our top pick for Most Accurate, the Safe Home Ultimate Drinking Water Test Kit, screens for over 200 contaminants, providing the best perspective of your water’s safety. However, if you only need to test for a few parameters, such as water hardness or heavy metals, you can buy a specialized test at a much lower cost.Although chlorine in pools will kill most germs that a raccoon could carry into the water, it does not kill Baylisascaris eggs. If raccoon feces or a dead raccoon are found in the pool: Close the pool to swimmers. Then. Test the raccoon or its feces for Baylisascaris. If the feces or raccoon tests positive for Baylisascaris, clean the pool as ...Water Treatment Services offer a comprehensive range of water quality testing and laboratory analysis solutions to support owners and operators of swimming pools, spas and hot tubs. Our experts can provide advice and support to help you identify the most appropriate strategies for the on-going management of your pool facilities.To get an accurate reading with a liquid reagent, clean the test container and take water from your pool as you would for the test strip. Then, mix the reagent into the water without touching the lid and contaminating the test, and check the color. Chemical reaction test: Place a chlorine tablet or pool shock over stains.

With an average rating of 4.5 out of 5 stars, the Taylor Technologies Complete Test Kit is loved by pool owners worldwide. This kit boasts more than 2,500 reviews, 90% of which rate this product a 4 or 5 stars. Other testers particularly love that this product is accurate and comes with handy instructions.. Best buy same day delivery

testing pool water

When the pump has circulated the water for at least one hour, dip the sample bottle into the water about 12–18” (about elbow deep). Invert the bottle to collect your water sample, and bring it back to the surface. Make sure to collect the sample from a well-circulated area of the pool. Stagnant water can give you inaccurate test results. Water testing labs play a crucial role in ensuring the safety and quality of our water supply. These labs utilize various methods to analyze water samples and detect any potential ...Oct 29, 2020 · The liquid test kit comes with two chemicals you must add to the water samples: OTO (orthotolidine), and phenol red. OTO measures the water’s chlorine level, while phenol red measures pH level. After adding 4 to 5 drops of each, you can shake up the samples and watch the water change color. Method 1: Test Pool Water Chemistry Using Pool Test Strips. Method 2: Test Pool Water Chemistry Using Pool Test Kits. Method 3: Test Pool Water Chemistry Using Digital Pool Testers. What is the Best Way to …3. Hose Down the Pool Deck. Since salt water is corrosive, it can wear down your patio or pool deck. Rinse off the pool area once a week with a garden hose—and don’t forget to hose down the pump, the filter, and skimmer. 4. Test pH Level Weekly. A well-balanced pool will have a pH level between 7.2 and 7.6.Best Salt Water Pool Test Kit: Taylor Complete Pool & Spa Test Kit – High Range K-2005C 2 oz Reagents. Sale. Taylor Complete Pool & Spa Test Kit - High Range K-2005C 2 oz Reagents . Keep your swimming pool, hot tub, or …Pool water testing is an essential part of a pool maintenance routine. When you know how to test pool water, you’re one step closer to making sure your …Assuming you have test kit, fill the two tubes provided in the test kit to the “full” line. Add five drops of the first reagent to the first test tube. Gently mix the tube contents together. If a yellow-brown color appears, copper is present in the pool water sample.Mar 25, 2021 · The best place to draw the water sample from the absolute pool middle. Here are the steps to take: Get a clean 1-liter plastic container. Avoid using a glass jar or a chemical bottle. Hold it upside down with its opening facing the pool floor. Draw the water sample 18-inches below the water surface or an elbow deep. To get an accurate reading with a liquid reagent, clean the test container and take water from your pool as you would for the test strip. Then, mix the reagent into the water without touching the lid and contaminating the test, and check the color. Chemical reaction test: Place a chlorine tablet or pool shock over stains.Pool water testing is vital for sustaining a healthy and secure swimming environment, preventing issues like cloudy pool water, and enabling the efficient use of pool chemicals. By testing and balancing your pool water regularly, you ensure the effectiveness of disinfection, water quality, and the longevity of your pool surfaces and equipment.In this episode you'll learn how to test your pool water for chemicals. Use test strips, (I suggest Aquacheck Pro Test Strips) not liquid kits to test.(As a...Commercial pools are required to check chlorine levels every hour and record their findings in a log, however the home pool owner should check their pH and chlorine levels 2-3x per week. If pH level has changed, check the TA level. Total Alkalinity levels tend to fluctuate less, so weekly testing is fine. Calcium Hardness and Cyanuric acid ... Using a Digital Test Kit to Test Your Pool Water. Using the Solaxx SafeDip digital chemistry tester would be the easiest and most accurate way to test your pool water. Fill the bottom 1/3 of the sample cup with the water sample. Make sure to collect the water at least 1.5” from the surface. The other option is to submerse the probes directly ... May 16, 2023 · Browse this list of top products to get an idea of the best pool test kit—we even tested several kits to make the shopping process easier. BEST OVERALL: Taylor Technologies Complete Pool Test ... Best Budget: Jed Pool Tools Standard Dual Water Test Kit. “High quality, Standard tools and items, Sturdy packaging.”. Best Digital Pool Test Kit: LaMotte 2056 ColorQ Pro 7 Digital Pool Water Test Kit. “Digital reading of test results, Water resistant, carrying case.”. Best for Saltwater Pool: HTH 6-Way Pool Test Kit.Browse this list of top products to get an idea of the best pool test kit—we even tested several kits to make the shopping process easier. BEST OVERALL: Taylor Technologies Complete Pool Test ...Testing your water and ensuring total alkalinity is always balanced will help prevent any of these issues! Testing Total Alkalinity. Since pH and TA go hand in hand in pool chemistry, it makes sense to test them simultaneously.Ideally, pH should be tested at least weekly, so total alkalinity tests should follow that procedure.Doughboy Pools have been a popular choice among homeowners for their durable construction and long-lasting performance. With a reputation for quality, these pools are designed to w...Assuming you have test kit, fill the two tubes provided in the test kit to the “full” line. Add five drops of the first reagent to the first test tube. Gently mix the tube contents together. If a yellow-brown color appears, copper is present in the pool water sample..

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