Master Your Water Quality. Ensure Perfect Nutrient Uptake, Thriving Aquariums, and Crystal-Clear Pools.
Unbalanced water quality can ruin your hydroponic crops, harm your fish, or make your pool unsafe. Meet the 4-in-1 Digital Water Tester—the ultimate pocket-sized laboratory. Engineered with a high-sensitivity glass probe and an advanced algorithm chip, this professional-grade pen delivers instant, medical-grade readings of pH, EC, TDS, and Temperature with a single dip.
Why Growers & Homeowners Choose Our 4-in-1 Tester:
4-in-1 Complete Water Analysis: No need for multiple confusing test kits. Instantly measure pH (acidity/alkalinity), EC (electrical conductivity), TDS (total dissolved solids), and Temperature to ensure your water is in the perfect range for maximum nutrient uptake.
Elite Precision & Instant Readings: Equipped with an advanced algorithm chip and a highly sensitive glass probe. Get ultra-accurate pH readings from 0-14 pH with a sharp 0.01 resolution, and TDS readings up to 9990 ppm.
Automatic Temperature Compensation (ATC): Temperature changes can skew water readings. Our tester automatically adjusts and compensates for temperatures ranging from 32°F to 140°F (0°C–60°C), ensuring 100% accurate data every single time.
Hassle-Free Auto Calibration: Keep your measurements flawless. The 3-point automatic calibration system easily calibrates the electrode using standard pH 4.00, 6.86, and 9.18 solutions with the press of a button.
Rugged, Waterproof & Easy to Read: Built for real-world environments. Features an IP67 waterproof rating (it floats!), a bright green backlit LCD screen for easy reading in dark grow rooms, and a 1-tap data lock button to easily record your measurements.
Perfect For:
Hydroponics & DWC Systems: Maximize plant growth and yield by keeping nutrients perfectly balanced.
Aquariums & Reef Tanks: Protect delicate fish, corals, and marine life.
Pools, Spas & Hot Tubs: Maintain safe, crystal-clear water for your family.
Home Brewing & Fermentation: Perfect for beer, wine, kombucha, and sourdough.
Daily Drinking Water: Ensure your tap or RO/DI water is pure and healthy.
Technical Specifications:
Material: Heavy-Duty, Waterproof ABS (IP67 Rated)
Testing Parameters: pH / EC / TDS / Temperature
pH Range: 0.00 - 14.00 pH (Resolution: 0.01 pH)
TDS Range: 0 - 9990 ppm
Temperature Range: 32.0°F - 140.0°F (0.0°C - 60.0°C)
Display: LCD Screen with Green Backlight
Power Save: Automatic Power-Off Function
How to Calibrate Your Meter (Quick & Easy):
Dissolve the pH 4.00, pH 6.86, or pH 9.18 buffer powder into a beaker with 250ml of distilled water.
Dip the electrode into the solution and wait 5–10 seconds for the reading to stabilize.
Press and hold the MODE/CAL button for 6 seconds, then release.
Once the display stops flashing, your calibration is complete and 100% accurate!
What’s Included in Your Package:
1x 4-in-1 Digital Water Quality Tester Pen
3x pH Calibration Buffer Powders (4.00 / 6.86 / 9.18)
1x Quick Start Instruction Manual