When HN users recommended it
1 HN user recommended this in 2022, in one comment.
20072026
Each tall tick is one HN user's first recommendation. A short tick is the same user again. Click a tick to jump to the comment.
1 HN user recommended this in 2022, in one comment.
Each tall tick is one HN user's first recommendation. A short tick is the same user again. Click a tick to jump to the comment.
I agree! I've had the best luck with this one, which is far better than the average pH pen from Amazon. https://www.amazon.com/Waterproof-Accuracy-Suitable-Testing-...