01METAL DETECTORS
Precision in a Pocket-Sized Pen
This slender instrument fits comfortably in the palm, offering a discreet way to assess the clarity of your water supply. Its compact form factor allows it to travel easily, whether you are checking a home filter or monitoring a pool.
The device measures total dissolved solids with high precision, making it suitable for purists who value exact data over guesswork. It is an essential tool for anyone maintaining purified drinking water, boiler systems, or recreational pools.


02DESIGN
Sleek ABS Construction
Crafted from high-quality ABS plastic, the pen offers a sturdy yet lightweight build that withstands regular handling. The material choice ensures durability without adding unnecessary bulk, keeping the overall weight at approximately 56 grams. This robust exterior protects the internal sensor elements while maintaining a clean, professional aesthetic.

04PRACTICALITY
Simple Maintenance and Care
The electrode protective cover removes easily, allowing you to clean the probe and sheath thoroughly after each use. The unit operates on two LR44 button batteries, which are not included in the package. To preserve the electronics, avoid immersing the entire body in water and keep it away from direct sunlight and high temperatures.
05INCLUSION
Complete Travel Kit
Arriving in a compact carton measuring 16 by 4 by 3 cm, the set includes the test pen itself, a detailed manual, and a protective leather case. The case adds a layer of refinement and protection, making it convenient to store in a drawer or carry in a bag. The product size is approximately 15.3 by 3 cm, ensuring it remains unobtrusive.


06AT A GLANCE
The key points
- Durable ABS plastic construction for long-term daily use
- Measures total dissolved solids from 0 to 9990 ppm
- Delivers accurate results in just two to six seconds
- Includes a protective leather case and user manual
- Features automatic temperature compensation up to 60 degrees Celsius
07
Highlights
- 1, Easy to clean
- the electrode protective cover can be removed for cleaning the probe and the sheath 2, Fast measurement: due to the exquisite sensor element, a measurement can be completed in 2‑6 seconds 3, Easy to use: the pen electrode can be directly inserted into the mouth of the drinking bottle for measurement 4, Made of high-quality ABS plastic material, the product is excellent, sturdy and durable, and has a long service life 5, Application scope: cleanness of purified water production and drinking, boiler water, swimming pool water
- Application scope
- cleanness of purified water production and drinking, boiler water, swimming pool water,etc

About this product
Avoid immersing the TDS pen whole body in water, avoid direct sunlight, keep away from high temperature, avoid impact and heavy pressure and drop
Specification
Item Type: Water Quality Tester
Product Material: ABS
Product Weight: Approx 56g/2.0oz
Product Size: Approx 15.3 x 3cm/6.0 x 1.2in
Measuring Range: 0~9990ppm
Accuracy: ±2% (F.S)
Automatic Temperature Compensation: 0℃~60℃
Working Temperature: 0℃~50℃
Package List
1 x Water Quality Test Pen
1 x Manual
1 x Leather Case
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