Features: 1. The water are designed and manufactured with reference to the standard, and each of our tests detects contaminants. 2. The water test strip is equipped with 16 main functions, covering the main influencing factors of polluting swimming pool, or drinking water quality. 3 Our products use the most reliable to ensure the accuracy of testing water quality, and this water quality measurement kit can be used for science education. 4. The household water test kit is equipped with a test tube and a dropper, which can avoid water pollution and facilitate operation. 5. 16 in 1 water can be applied to a wide range of water quality testing, such as drinking water, swimming pools,, spas, ponds, aquariums, industrial wastewater, etc. Specification: *Specification：50pcs/100pcs *Color：As shown *Size: As shown Package Contents： 50 pcs/a tube+1dropper+1 test tube，100pcs/a tube+1dropper+1 test tube Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. Superior-quality-This accessory parts, made of durable materials, are durable and not easy to wear or damage, ensuring long-term stable cleaning results and long-lasting service life. Easy to Install-The installation is simple, and the accessory is easy to install and replace. Fine Manufacturing-Precise processing and adjustment ensure that each parts are consistent, improving the machine. Well design-user friendly design allow you to quickly install them onto yours, ensuring a secure fit and saving valuable time during maintenance. Excellent After Sales Service-We focus on quality and after-sales service. If you are dissatisfied with our products, please let us know. We promise to give you 110% satisfactory after-sales service. No risk. Don't hesitate. Just buy it.