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TDS Water Quality Test Pen

$29.95 $89.99

" When we moved to Sarasota we were told not to drink water from the tap😕. In he beginning we bought all of our drinking water. My husband recently installed an R/O system and we bought the water tester to check the water. The difference between tap water and the R/O water was amazing 😀 and we were able to verify this with the TDS Water Quality Test Pen. (Testing the refrigerator water, which is "filtered", resulted in a barely a marginally acceptable product, which is probably more of an endorsement of the R/O system)."⭐ - Macey K., New Jersey
Get a great discount on our  TDS Water Quality Test Pen while the NEW YEAR SALE is on. Once we sell 500 units, we will be increasing the price back up to $89.99.


AUTO CALIBRATED: The most convenient PH meter on the market. Features in-built calibration with buffer powders. Makes it easy for you to measure the PH of your food, water, aquarium, pool or anything else in a snap.

SUPER EASY TO USE: Easy to use for both new and experienced users. No fumbling with complicated readings or buttons. Just turn it on, dip in the liquid and read the display.

FAST & ACCURATE: Arguably the fastest and most accurate portable PH meter ever. Fluid operation with a large digital display for easier reading. Real-time plug & play functioning.


  • Display Type: Digital
  • Color: White
  • Weight: 3g / 0.1oz
  • Item Size: 15x1.6x1.6cm/ 1.3x0.6x0.3inch
  • Waterproof: IPX6

1 x TDS Detection Pen