Honestly I have that cheapo also, I have not bought it, but I think lot of us have tried to “save” some money. Till the moment you realize you might be better to gamble those cash doing much bigger favour to yourself. Bluelab pH pen is shit (or maybe I had some crap unit) and it takes shitload of time to get final readings. Their EC meter truncheon is crap as well inaccurate, you have to take it out and put it back in to let it start blinking. I have bought them both and than sold and went back to my ancient pH/EC meter. They are definitely better than the cheapest amazon shit I guess. Bluelab soil pH pen is completely different story, instant and accurate reading, solid glass probe and you can use it for measuring liquid as well. Those were my best spent money ever. I see guys also mentioning Apera, this one looks great but it also seems to be more fragile and that price is ridiculous. Slurry test is vaste of time since you are not in lab…