On the never-ending quest for the latest and greatest gadgets I stumbled upon the Pen Meter - Wattson WS-EC9988. This sleek 3-in-1 pen-type meter tester boasts the ability to measure pH, TDS, and temperature with impressive accuracy and precision.
But does it live up to the hype?

What I love most about this meter is its versatility. Not only can it measure pH levels ranging from 0.00 to 14.00 but it can also measure EC levels up to 1999μS/cm and temperature from 0℃ to 55℃. The automatic temperature compensation ensures accurate readings no matter the environment. The resolution of 1μS/cm for EC and 0.01 pH for pH levels provides precise results. The only downside is the limited range of conductivity, which could be higher than 20. Overall, the Wattson WS-EC9988 is a reliable and convenient tool for any hobbyist or professional.

Simply put the Wattson WS-EC9988 is a great investment. Its 3-in-1 capability saves space and money while delivering accurate results. The ability to calibrate both pH and EC levels with a screwdriver is a standout feature. However, the lack of a backlight and hold function could be improved. Additionally, it does require calibration and some users found it a bit unstable during the process.

In conclusion I have to say that the Pen Meter - Wattson WS-EC9988 is definitely worth considering if you're looking for a reliable and versatile meter tester. Its accuracy, precision, and ease of use make it a great choice for anyone who needs to measure pH, TDS and temperature. While it may require some calibration and lack a few features, the overall quality and value of the Wattson WS-EC9988 make it a great investment for any hobbyist or professional.