That's the one I have. I got it after reading recommendations on here and other forums. I haven't tried any others so can't compare it, but I have been pleased with it.VOLTCRAFT ph-100 ATC
https://www.amazon.co.uk/VOLTCRAFT-ph-100-ATC-Digital-Calibrated-Standard/dp/B003A646G0
they can be bought elsewhere as well as Amazon
I've used three or 4 different digital ones....this has been the best I've had under £100
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