N X Pool and Spa Test Strips 6 in 1 Aquarium Test Strips - Test PH Hardness and More Pool Water Testing Pond Hot Tub Drinking Water Test Strips 50 Count-1 Pack-

Sample requirements: 1. Take 5-10mL of the sample, and take cleaning part of the sample for testing after it is kept untouched for a while. 2. The test is conducted at the room with the temperature around 25 ° C. Testing method: 1. Immerse the reaction area of the test strip in the solution to be tested for 1-2 seconds, then remove the test strip, and shake off the excessive water on it. 2. After 1 minute, compare the color of the reaction area of the test strip with the color chart to determine the test value of the solution to be tested. 3. The colorimetric time should be controlled at about 60s, and the reading will be affected if the time is too long or too short. Packing List: 1 Box of Test Strips Notes: 1. Do not touch the reaction end of the test strip when removing the test strip to avoid contaminating the test paper and affecting the test results. 2. After removing the required number of test strips, store the remaining test strips in a sealed and dark place. 3. The liquid to be tested should be kept as the one is colorless or the one features the light color as possible. For the liquid with dark color, activated carbon can be used for dehydration treatment of the above liquid. If the liquid to be tested is relatively turbid, just keep it untouched for a period of time. After its precipitation, take the clear part of it for testing.