This digital pen style is a fine instrument for any aquarium, the fishing industry, swimming pools, school laboratories, food and beverage, etc. And, it is fine for all basic testing applications.

Features:
Let you no longer worry about whether the meter is accurate, the 3 calibration packages give can help you test whether our meter is accurate.
The size meter designed allows you to easily put it in your pocket, so you can take measurements , anywhere. It can help you test it whether you take it to the pool, on a trip, to the beach or camping.
As a tool to improve the quality of . Can be used to test drinking , swimming pools, in aquarium, RO system, spa or hydroponics. Basically all the environments that need to test value can use this tester to get accurate data.
tester has a sensitive electrode sensors ,simply press "ON", It only takes a few seconds for your results to appear on screen.
No more need to take care about the of testing liquids, as the meter has an auto temprature compensationfeature that adjusts to temperatures and quality.

Specifications:
Resolution: 0.01
Error: 0.05
Operating : 0℃-60℃
: 2 * 1.5V  LR44
Item size: 155 * 31 *18mm / 6.1 * 1.2 * 0.7in
Package size: 167 * 52 * 30mm / 6.6 * 2.0 * 1.2in
Package weight: 110g / 3.9ounce

Packing List:
1 * Tester