Ergonomic design at the back of the tester body gives you firm and comfortable grip, just take up the pen and hold it in your hand with fingers circulated precisely to the grooves backside. Large LCD design provides comprehensive meter information with value in the center of the screen for your easy and direct reading. 5 point CAL DONE number indication comes up below the value with the smiling face at the corner which gives real time electrode efficiency icon indication. Besides, you can also read out the temperature at the lower line of the LCD screen. Moreover, blue color tri-key design ensures simple and intuitive pressing, controlling and measuring.

With the handy tester in one hand, all functions operated within your fingers, users are capable of reading the values immediately even in dark surroundings, cause this tester has got the stored energy backlight function. i.e. if you're making your applications in the dim sewerage system, without losing all of your values at a sudden, the tester can still last for a period of time to facilitate your measurement.

The pen-like tester is equipped with user replaceable high-impedanced plane electrode. This can meet your water measurement needs from 1 ml micro sample testing to field throw measurement, skin or paper pH testing. Drip a drop of water on your skin, put the plane electrode to the water covered area, your skin's pH value can be told out in a second and show on the large LCD screen. Hence, no matter it's a piece of paper, or your skin, or the water samples you want to measure the pH of, this pH30 tester can meet all of your measurement needs. Just enjoy the fun of measuring.

The hull-shaped design make the tester float on the water surface and keep the LCD side staying upward. The reading will be automatically locked and the memory will be stored, so there are no worries about the deep water or long distance pH measurement and the lost of readings. Believe it or not, it's just so easy and simple.

MHX 4-Part-Design, no tools are needed to change batteries and ensures easy maintenance. Different from traditional watch battery, with 1.5 AAA battery set, the tester's enhanced power saving allows extended power consumption up to 500 hrs. Besides, the tester will automatically power off after 6 minutes non-use which are helpful to save the battery and energy-efficient.

With waterproof and dustproof housing, IP67 rated, you can use a thread through the hole on top of body, no matter how far you are from the sample areas, throw the tester into the field or deep water or any place you want to measure the value of.

The pen-like tester is equipped with user replaceable plane ORP electrode. It is easy to maintain and need not to worry about the contaminations and can be used for a longer period of time.