Precision Water Tester with 0 to 99.99 ppm accuracy provides visible water quality insight for drinking water safety and aquarium plant care, combining widerange measurement precision with reliable performance. Clear Digital Display: large HD LCD screen offers easy value reading, fast identification of results, and strong readability in low light for a smooth user experience. Widely Applied: a multiapplication water tester suitable for home use, plant care, and aquarium maintenance, delivering reliable, protectionfocused functionality. User Friendly: designed for easy use by both seniors and children with no calibration required; operates with a single button for consistent and dependable water test outcomes. Use scenario — Home water safety: quickly verify tap or filtered water quality to ensure it is safe for drinking, cooking, and general household use. Use scenario — Aquarium care: monitor water quality to protect fish health and support aquarium plant care, guiding adjustments to water changes and maintenance. Use scenario — Plant care: check irrigation water before use to maintain healthy plant growth and prevent stress from unsuitable water. Key attributes at a glance: functions clearly as a water quality tester, compatible with drinking water, aquarium, and plant care contexts; designed for straightforward operation, precision measurements, and dependable results without the need for calibration.