Description
7 in 1 Water Quality Tester Pen
Knowledge is the first step toward better water.
The 7 in 1 water quality tester pen is a compact, easy-to-use tool designed to give you quick insight into your water quality. With instant digital readings across seven key parameters, it helps remove guesswork and supports informed decisions about filtration and everyday water use.
Whether you’re testing tap water, filtered water, bore water, or bottled water, this pen offers a clear snapshot of what’s present — all in seconds.
What It Measures
The 7-in-1 tester typically measures:
TDS (Total Dissolved Solids)
pH level
Electrical Conductivity (EC)
Temperature
Salinity
ORP (Oxidation-Reduction Potential)
Mineral concentration indicators
These readings help you better understand changes in water quality before and after filtration.
Why Use a Water Tester?
Using a water quality tester allows you to:
Compare tap water vs filtered water
Monitor filter performance over time
Understand mineral and dissolved solid levels
Make confident, evidence-based decisions
Learn more about your household or bore water source
It’s a simple educational tool — not a diagnostic device — designed to support awareness rather than overwhelm.
Designed for Simplicity
✔ Instant digital readings
✔ Compact and portable
✔ Easy single-button operation
✔ Clear display
✔ Ideal for home, office, or travel use
No installation, no technical background required.
A Helpful Companion to Filtration
At CARA, we believe education comes before sales. The 7-in-1 Water Quality Tester Pen empowers you to see changes in your water quality and better understand how filtration systems can support cleaner, more consistent hydration.
Instruction sheet font is too small/explanations inaccurate and calibrations process poor/complex……readings on unit are unclear and functionality unclear
Thank you for your feedback.
Instructions could be better, was also hoping for some advice on what each of the tests actually do and what good vs bad looks like for each. Have had to do a lot of googling to try and work it out
We are sorry to hear that. Thank you for your feedback, we will look to incorporate better instructions onto our website