What is Reddit's opinion of Bluelab PENPH pH Pen Fully Waterproof Pocket Tester, Easy Calibration & PENCON Conductivity Pen Fully Waterproof Pocket Tester, CF, EC, PPM 500, PPM 700?
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Bluelab PENPH pH Pen Fully Waterproof Pocket Tester, Easy Calibration & PENCON Conductivity Pen Fully Waterproof Pocket Tester, CF, EC, PPM 500, PPM 700

By popularity on Reddit, this product is:

1 review of this product found across Reddit:

https://www.amazon.ca/Bluelab-Digital-Hydroponic-System-Conductivity/dp/B08SXP5TJF/ref=mp_s_a_1_3?crid=AOBO5XZQ015N&keywords=blue+labs+ph+conductivity+combo&qid=1668292513&qu=eyJxc2MiOiIxLjgzIiwicXNhIjoiMC4wMCIsInFzcCI6IjAuMDAifQ%3D%3D...

I'm in Canada not sure where you live. But this is from the Canadian Amazon site. These pens will last you years as long as you clean and calibrate them monthly. And they let you know when their calibration is off and needs to be done.

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Bluelab PENPH pH Pen, Digital Meter for Water with Easy Two Point Calibration and Double Junction Probe Test Kit for Hydroponic System and Indoor Plant Grow, White