OptiReaders Pro offers another game-changing feature: Blue Light-blocking Technology. It reflects and absorbs harmful blue rays, preventing the visible harmful high-energy blue light and cutting out 100% of the harmful blue light.
Description
With its top features, you’ll love:
5-in-1 Water Quality Meter – Accurately measures pH, salt, EC, TDS, and Temp in seconds.·Perfect for Saltwater Pools – Detects salt levels from 0.01% to 25.00% (0–10000 ppm), helping to optimize salt chlorinator performance.·Digital pH & ORP Accuracy – Utilizes ATC and the latest chip + electrode design, ensuring ultra-stable readings—no more second-guessing pH or chlorine strength.
Easy to Use & Calibrate – Features 3-point auto calibration (pH 4.00 / 6.86 / 9.18) and temperature compensation (32.1°F–140.0°F) for long-term accuracy.·Cost-Effective Alternative to Test Strips – Eliminate the need for color-matching and extra cost. Simply dip and read with confidence—great for everyone, even those with color vision issues!
What’s Included: 5-in-1 Water Quality Tester·Replaceable Electrode·Calibration Powders·3 x LR44 Batteries (plus 3 extra!)·Cleaning Tools·Instruction ManualGreat For:·Saltwater pools & spas·Saltwater aquariums & koi ponds·RO/DI systems & hydroponics·Drinking water quality testingKnow your water in seconds—because clean, balanced water = peace of mind. 
7-in-1 Digital Salt Water Test Kits for Pools & pH Tester
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