![]() Allow frozen reagents to thaw at room temperature. Store pool test kits in a cool, dark place, and avoid prolonged exposure to the sun.įrozen Test Reagents: Water test kit makers suspend shipments of liquid test kit chemicals during freezing weather, however water test chemicals may still be viable after freezing for a short time period. Bear in mind, that a constant fluctuation of temperature can also negatively impact the chemicals. Ideal storage temperatures are between 5° to 22☌ (40° to 70☏). The shelf life of pool test chemicals can be greatly impacted by hot and cold temps. The best test kit money can buy can be rendered useless due to improper storage. Typically, the chemicals used in test kits are considered to have a shelf life of about a year. It’s best to begin each season with fresh reagents. Poring over every detail during the testing process could all be in vain if your pool water test chemicals were compromised before you even pulled your first water sample. Or when the color changes color briefly, and one more drop changes it completely, you can count the last drop as 5 ppm, instead of the normal 10 ppm. If you do not see a change, just subtract that drop from your count. Holding the comparator on the top between your thumb and forefinger, and rotate your wrist to swirl the sample within the test vial.įor the titration tests ( FAS-DPD, pH demand, Alkalinity & Calcium), if you are unsure if the sample color has changed completely, add another drop. Take your time and mix the reagents thoroughly. You followed steps 1-4 perfectly, and added the perfect amount of reagent into the perfect amount of water and in all the excitement, didn’t swirl between drops. Hold your test vial at eye level and the bottom of the meniscus or curve of the water should be lined-up with the “Fill” level line. Precision is key when it comes to achieving the best results possible. It may only be a few dozen drops of water, but too little or too much can tip the scales. Too Little or Too Much Water SampleĮven the slightest inaccuracy of a water sample can skew your test results. ![]() Just like drops, cutting corners on this step will ruin the chemical reaction. If your test kit includes tablets, remember to crush them fine. Tilting a reagent bottle as shown, instead of holding it straight up and down will make the drop smaller and throw everything off. This is one of the small details that can make a big impact on the accuracy of your test results. Life is full distractions – letting a sample sit too long gives it time to react with the air, sunlight, and even humidity. You pulled the sample from the perfect area and depth of the pool but didn’t test it right away. As a rule of thumb, an elbow deep depth between the shallow and deep ends of the pool is the sweet spot. The surface is also where evaporation is taking place and the interaction with the air can throw your results off. In order to get an accurate sample of your pool water, don’t draw the water from the surface because that is where the highest concentration of pollutants like oils and debris gather. These are locations in a pool where the pool chemistry is going to be different from the pool as a whole. Avoid areas near return lines, steps, ladders and corners of the pool. Where you gather your water sample from in a swimming pool matters. Water Sample from the Wrong Area of the Pool There are 12 pitfalls to avoid when testing your pool or spa water: 1. Pool water testing can become so routine that simple mistakes could make your test results inaccurate. Today’s pool testing guide covers the finer details of backyard water analysis, and a few common pitfalls of using an outdoor laboratory. Welcome back, students of pool! I’ve spoken on the topic of pool water testing before, and we also have a nice beginner’s guide to testing.
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