Milwaukee MW151 Max Logging
The most accurate meter here, for labs that need 0.001 pH resolution and full logging.
Amazon $538.20$538.20
The Milwaukee MW151 Max Logging is the better ph meter overall, rated 3.8 to 3.6. The Milwaukee MW151 Max Logging leads on accuracy and calibration. The Apera PH800 Benchtop wins on price. The Apera PH800 Benchtop costs $142.35 less ($395.85 vs $538.20).
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.
Apera PH800 Benchtop
A lab bench meter with proper record keeping, for QC labs that need to export readings.
Amazon $395.85$395.85
Which should you buy?
- Choose the Milwaukee MW151 Max Logging for accuracy (±0.002 pH vs ±0.01 pH) and calibration (5-point calibration vs 3-point calibration).
- Choose the Apera PH800 Benchtop for price ($395.85 vs $538.20).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every benchtop meters ph meter; a clear win is highlighted. How we rank explains each one.
| Factor weight | Milwaukee MW151 Max Logging | Apera PH800 Benchtop |
|---|---|---|
| Overall rating | 3.8/5 | 3.6/5 |
| Accuracy 30% | 100 ±0.002 pH | 81 ±0.01 pH |
| Calibration 15% | 100 5-point calibration | 85 3-point calibration |
| Features 20% | 75 replaceable probe, automatic temperature compensation, stores readings | 82 replaceable probe, automatic temperature compensation, waterproof (IP54), stores readings |
| Extra readings 10% | 0 pH and temperature only | 0 pH and temperature only |
| Price 15% | 5 $538.20 | 18 $395.85 |
| Warranty 10% | 50 3-year meter warranty | 50 3-year meter warranty |
Specifications
| Milwaukee MW151 Max Logging | Apera PH800 Benchtop | |
|---|---|---|
| pH measurement | ||
| Accuracy | ±0.002 pH | ±0.01 pH |
| Resolution | 0.001 pH | 0.01 pH |
| Range | -2 to 20 pH | -2 to 20 pH |
| Calibration | 5-point | 3-point |
| Temperature compensation | Yes | Yes |
| Other readings | ||
| Conductivity (EC/TDS) | No | No |
| ORP | No | No |
| Salinity | No | No |
| Build | ||
| Replaceable probe | Yes | Yes |
| Waterproof rating | - | IP54 |
| Stored readings | 1,000 readings | 500 readings |
| Connectivity | USB | USB |
| Meter warranty | 3 years | 3 years |
| Probe warranty | 6 months | 6 months |