Specifications:The testing strip can test 16 water quality parameters.This product is suitable for drinking water, aquarium, swimming pool, spa, industrial water, pond and hot spring water.It has anti-VC interference ability.Test Methods:1. Immerse the reaction area of the test strip in the test solution for 1-2 seconds, remove the test strip, and shake off excess water.2. After 1 minute, compare the reaction area of the test strip with the color of the color chart to determine the test value of the test solution.3. Colorimetric time should be controlled at about 60s, if the time is too long or too short, it will affect the reading.Item Name: Pool Test StripsModel: W-16Test Strip Material: PETAccuracy: 96%Test Time: 60sQuantity: 100Pcs/BottleFeatures: 16-in-1, Fast, Accurate, Easy to UseBottle Size: 13cm x 5cm x 5cm/5.12" x 1.97" x 1.97" (Approx.)Notes:Do not touch the test area of the reagent strip.After removing the test strip, keep the remaining test strips sealed and protected from light.Try to keep the liquid to be measured colorless or light-colored.Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 Bottle of Pool Test Strips (100Pcs)