Description: The water test strip can detect pH, total alkalinity, hardness, lead, copper, iron and other 14 parameters. Take 5-10ml of sample, immerse the strip in the desired water sample and remove within 1-2 seconds, then hold the strip horizontally and gently tap or shake to remove excess water, hold it still in the air for about 5-30s. Finally, read the results carefully within 60 seconds in a good light and with test area held near the color chart on the bottle. The comparison time should be controlled at about 60s, too long or too short will affect the reading. With this 16 in 1 water test strip, you can quickly and accurately test the water quality in 1 minute. It is a perfect solution for a water quality detection for good for you and your family safe. This test paper is made of PET, which can precisely and quickly detect the water quality. The box is 13cm high, 5.4cm long and 5.2cm wide. You can use this product to test water source including drinking water, aquarium, swimming pool, spa, industrial water, pond, hot spring water. Item Name: Water Quality Analysis Strip Material:PET Test Time: 60s Storage Condition: 2 Degree Celsius - 30 Degree Celsius at Dry Place And Avoid Light (Store at 2 Degree Celsius - 8 Degree Celsius) Term of Validity: 24 Months (2 Degree Celsius - 30 Degree Celsius at Dry Place And Avoid Light) Size:13cmx5.4cmx5.2cm/5.12inx2.13inx2.05in Notes: 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. When removing the strip, do not touch the reaction end of the strip, so as not to contaminate the strip and affect test results. After taking out the required number of test papers, keep the remaining test papers sealed and protected from light. Try to keep the liquid to be tested as colorless or light-colored. Before testing the liquid with too dark color, it can be dehydrated with activated carbon adsorption. If the liquid to be tested is relatively turbid, let it stand for a while, and take the clear part for testing after it settles. Package Includes: 100 X Water Quality Analysis Strip