Digital TDS EC Water Quality Tester Pen

Digital TDS EC Water Quality Tester Pen

Regular price $20.99 USD
Regular price $20.99 USD Sale price $41.98 USD
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Animated demonstration of a handheld water tester in a sample cup
Everyday water readings

Digital TDS & EC Water Quality Tester Pen

Check dissolved-solids, conductivity, and temperature readings with a compact pen you can bring to the tap, aquarium, or growing setup.

A clearer routine

Give your water a measurable starting point

Water can look the same from one source to another. A handheld meter helps you record TDS and EC readings when you want to compare a sample, check a filter's output, or keep an eye on a routine water setup.

Hand using a white TDS and EC tester in a glass of water
Three useful displays

Read TDS, EC, and temperature

TDS

See a dissolved-solids reading in parts per million (ppm).

EC

Check electrical conductivity as another way to observe dissolved ions.

Temperature

View the sample temperature while you take the measurement.

TDS, EC, and temperature display modes on the tester
Simple to use

From sample to reading

1

Pour your water into a clean container and remove the probe cap.

2

Turn on the tester and dip the probe end into the sample, keeping the body above the waterline.

3

Read the display, then rinse and dry the probes before replacing the cap.

White digital water tester checking a glass of water
Pen-sized design

Easy to hold, easy to store

The slim white body, front display, buttons, removable cap, and probe end keep the essentials together in one handheld instrument. Carry it in its PP case between checks.

White water tester showing its display, buttons, cap, and probes
Where it fits

One meter for different water routines

Use a separate, clean sample cup when comparing water from different places. The compact shape suits everyday checks at home and around hobby setups.

Aquarium care

Keep a record of readings from a tank sample as part of regular maintenance.

Testing an aquarium water sample beside a fish tank

Hydroponic growing

Check a sample from a plant-growing water system without moving the whole setup.

Testing a water sample near indoor hydroponic plants
Product details

What's in your set

ColorWhite
Pack quantity1 tester
PackagingPP case
InstructionsEnglish manual
Testing a glass of tap water at a kitchen counter
Care & context

Keep readings in perspective

Rinse the probe end after use, dry it, and replace the cap before storage. Keep the body and battery compartment out of the water and follow the included instructions for care.

TDS and EC readings describe dissolved material and conductivity. They do not test for every contaminant or determine whether water is safe to drink.

Everyday checks

Ready for more than one water routine

From tap water to aquariums and growing systems, the compact tester fits into the moments when you want to take a reading. Use a clean sample container each time.

Water tester pictured with different everyday water settings
Customer Reviews

What customers are saying

★★★★★

Helpful for Comparing Water

“I use this tester to compare readings from our tap and filtered water. The TDS number appears on the screen, so it’s easy to see how the readings differ. It has become a handy tool to keep by the kitchen sink.”

— Nathan B.
★★★★★

Easy to Read

“I wanted a simple way to check more than one measurement without juggling different tools. Being able to view TDS, EC, and temperature on one compact tester is convenient, and the display is easy for me to read.”

— Iris W.
★★★★★

Useful for My Aquarium Routine

“I keep this tester with my aquarium supplies and use it when I’m checking the water. The pen shape is easy to handle, and I like having the readings together in one small device.”

— Caleb J.
FAQ

Frequently asked questions

What does TDS mean?

TDS stands for total dissolved solids. The display presents the reading in parts per million (ppm).

What is EC?

EC means electrical conductivity, a measurement associated with dissolved ions in a water sample.

Can this tester tell me if water is safe to drink?

No. TDS and EC alone cannot identify every contaminant or certify drinking-water safety. Use appropriate professional testing when safety is a concern.

Where can I use it?

It can be used for samples from tap water, aquariums, or hydroponic systems. Use a clean container for each sample.

What comes with the white version?

One white tester with PP case packaging and an English instruction manual.

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