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
±0.002 pH5-pointNone
6 Milwaukee Instruments 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 Milwaukee Instruments's own.
Milwaukee Instruments makes 6 current ph meters: 2 pen testers, 2 portable meters and 2 benchtop meters. Prices run from $77.90 for the Milwaukee pH55 Pro to $538.20 for the Milwaukee MW151 Max Logging. Its best-rated model in each size: the Milwaukee pH58 Max pH/ORP (#8 of 13 pen testers, rated 3.2), the Milwaukee MW102 Pro (#6 of 8 portable meters, rated 3.1) and the Milwaukee MW151 Max Logging (#1 of 5 benchtop meters, rated 3.8).
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.
Milwaukee Instruments ph meters 6
- Milwaukee MW151 Max Logging#1 benchtop metersFull review
The most accurate meter here, for labs that need 0.001 pH resolution and full logging.
Amazon $538.20$538.20±0.002 pH5-pointNone - Milwaukee MW150 Max#5 benchtop metersFull review
A sturdy bench meter for labs that may add ORP later. The Apera PH800 offers more for less.
Amazon $461.15$461.15±0.01 pH3-pointNone - Milwaukee pH58 Max pH/ORP#8 pen testersFull review
A pen for pool and water-treatment work that needs ORP as well as pH. For pH alone, cheaper pens are as accurate.
Amazon $219.65$219.65±0.05 pH2-pointORP - Milwaukee MW102 Pro#6 portable metersFull review
A no-fuss handheld for brewing, food and hobby labs. It has a standard cabled electrode and a separate temperature probe.
Amazon $195.20$195.20±0.02 pH2-pointNone - Milwaukee pH55 Pro#11 pen testersFull review
A low-cost pen with a replaceable electrode, for pools, gardens and aquariums. The Apera PH60 is more accurate for a little more.
Amazon $77.90$77.90±0.1 pH2-pointNone - Milwaukee MW100 Pro#8 portable metersFull review
A basic cabled meter for rough checks. Most buyers get better accuracy for less from a pen tester.
Amazon $158.70$158.70±0.2 pH2-pointNone
