Ohaus Starter ST300

Last updated: November 9, 2026

Ohaus Starter ST300
3.4/5#5 of 8 in portable meters ph meters
3.4

A handheld from a lab-equipment maker, for labs standardised on Ohaus. Other buyers get the same accuracy for less.

  • ±0.01 pHAccuracy
  • 3-pointCalibration
  • IP54Waterproof
  • YesReplaceable probe
Check price at Amazon$455.32

Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros
  • ±0.01 pH accuracy with three-point calibration
  • Stores 30 readings
  • 500 hours per set of batteries
Cons
  • Costs far more than equally accurate handhelds
  • No warranty published

How it scores

The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.

Specifications

Model number83033961
pH measurement
Accuracy±0.01 pH
Resolution0.01 pH
Range0 to 14 pH
Calibration3-point
Temperature compensationYes
Other readings
Conductivity (EC/TDS)No
ORPNo
SalinityNo
Build
Replaceable probeYes
Waterproof ratingIP54
Stored readings30 readings
Battery life500 hours
Weight160 g

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