omprehensive Water Testing: Equipped to measure seven critical parameters: PH/EC/TDS/H2 Hydrogen/ORP/Salinity. This makes it an indispensable tool for maintaining optimal water quality in swimming pools, spas, aquariums, and aquaculture. and Waterproof: Designed with an IP67 rating, ensuring that it can withstand immersion in water at a depth of up to 1 meter for 30 minutes, making it ideal for use in water environments. User-Friendly Interface: Features an easy-to-read display and simple operation, allowing both professionals and novices to conduct accurate water quality assessments effortlessly. Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Color: Yellow Material: ABS Package Contents: 1 * Water Quality Tester 3 * Calibration fluid Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.