Ohaus Starter ST300
A handheld from a lab-equipment maker, for labs standardised on Ohaus. Other buyers get the same accuracy for less.
Amazon $455.32$455.32
±0.01 pH3-pointNone
2 Ohaus ph meters ranked. Each one is scored and ranked against every brand in its type, so "#3 mid-size" means third of all mid-size ph meters here, not third among Ohaus's own.
Ohaus makes 2 current ph meters: 1 pen testers and 1 portable meters. Prices run from $104.62 for the Ohaus Starter ST20 to $455.32 for the Ohaus Starter ST300. Its best-rated model in each size: the Ohaus Starter ST20 (#7 of 13 pen testers, rated 3.3) and the Ohaus Starter ST300 (#5 of 8 portable meters, rated 3.4).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Ohaus ph meters 2
- Ohaus Starter ST300#5 portable metersFull review
A handheld from a lab-equipment maker, for labs standardised on Ohaus. Other buyers get the same accuracy for less.
Amazon $455.32$455.32±0.01 pH3-pointNone - Ohaus Starter ST20#7 pen testersFull review
A pen tester from a lab-balance maker, for classrooms and labs buying Ohaus gear. The Apera PH60 is more accurate for less.
Amazon $104.62$104.62±0.05 pH3-pointNone
