[DETAIL]<br>Features:<br>Made of PET and other materials, it is safe, environmentally friendly and pollution-free.<br>Versatile for the ultimate home pool testing area for pools and spas.<br>Simple to use, dip the test strip in water for 2 seconds, then remove.Wait 15 seconds for the test strip to change color.Match the color of the strips to the color chart to achieve the effect.<br>It is widely recommended to check the water quality on a weekly basis before adding any chemicals.<br>It can be used to establish at least one maintenance program per week.<br>Storage conditions and validity period:<br>1 Storage conditions: Store in a dry place at 2°C to 30°C and avoid light (preferably at 2°C to 8°C).<br>2 Product validity period: 12 months when stored in a dry place at 2°C to 30°C and protected from light.<br>3 Expiry date after opening the bottle: After opening, the cap needs to be sealed and stored in a dry place at 2°C to 30°C away from light.The validity period is 6 months.<br>Testing method:<br>1.Immerse the reaction area of the test strip in the solution to be tested for 1-2 seconds, take out the test strip, and slide the edge of the test strip along the mouth wall of the solution container to remove excess water on it.<br>2.Within 1 minute, compare the reaction area of the test strip with the color of the color card to determine the test value of the solution to be tested.<br>3.The colorimetric time is best controlled at 30s, too long or too short will affect the reading.<br>Specification:<br>Material: PET<br>Size: 4.33*1.77in/11.0*4.5cm<br>Color: as picture shown<br>Package Includes: 1pc<br>Notes:<br>Please allow minor errors due to manual measurement.<br>The colors may be a little difference for the different monitor display.<br><br>[ATTRIBUTES]<br>- High-concerned chemical: None<br>- Origin: Mainland China<br>- High-concerned chemical: None<br>- Origin: Mainland China