MDC water quality test strip 7-in-1 seawater and freshwater pool SPA aquarium and fish pond precision test<br> Category: Water quality test paper, other<br> Certification: FDA, CE, ISO<br> Material: PET<br> Test time: 60s<br> Advantages: ability to resist VC interference<br> Test items: PH, total alkali, nitrite, residual chlorine, total chlorine, hardness, bromine<br> Scope of application: suitable for drinking water, aquarium, swimming pool and spa, industrial water, pond, hot spring water<br> 1.Please allow 0-1cm errors due to manual measurement.<br> 2.Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.<br> 3.If you have any questions about the product, please contact us, we will patiently answer for you!<br> Specifications:<br> Name: MDC water quality test paper 7 in 1 seawater and freshwater swimming pool SPA aquarium and fish pond precision test<br> Size: 15*5*5cm<br> Weight: about 85 grams<br> Package Included:<br> 1*ph test paper