Lab Grade. High Performance. Automated. Tough.

Experience unmatched reliability and precision with the Milwaukee MW102 PRO+ pH meter—a global favorite for professionals who demand consistently accurate and simple pH measurement. Delivering results precise to ±0.02 pH, this meter features automatic temperature compensation and robust construction for brewers, wine makers, growers, hydroponics experts, and anyone who faces challenging testing environments.

What People Are Saying

"Amazingly accurate, the best meter I have used so far."

"Very satisfied, very accurate, rugged device that calibrates easily."

"Rarely needs to be calibrated and gives perfect readings every time."

"Killer tool, good value."

Summary

The digital Milwaukee PRO+ pH Meter is the top choice for discerning professionals testing samples that defeat other pH testers and meters. Trusted by brewers, wine makers, hydroponic growers, and farmers, the MW102 delivers dependable results where it matters most.

Pair with the Wine Electrode MA919B/1 for a reliable and cost-effective portable pH meter for wine making and fermentation.

The Milwaukee PRO pH meter delivers:

Accuracy

Upgrade your pH testing program with the PRO+ pH Meter. A two-point calibration system ensures higher precision over one-point alternatives, with accuracy to ±0.02 pH—five times more exact than entry-level models.

With included pH and temperature probes, your results are automatically adjusted for temperature, ensuring perfectly accurate readings every time. The temperature probe also functions as an accurate thermometer.

Toughness

Designed for professionals who need portability without compromising durability, this rugged digital pH meter is engineered for field and lab work alike.

Low Maintenance

The included SE220 lab grade pH electrode is Milwaukee’s industry favorite, featuring gel filling for minimal upkeep and a double junction for reliable performance—even with difficult samples. Ideal for beer brewing, wine making, and hydroponics, the MW102 PRO+ stands out as the preferred digital pH tester for advanced applications.

When paired with the MA919B/1 Wine Electrode, you get unmatched reliability for wine pH measurement. The MA919B/1 electrode is designed to prevent clogging and staining, and its refillable design extends its lifespan and versatility.

Design features

• Fast, easy-to-read results with a large digital LCD
• Lightweight, portable design for flexible use
• Effortless operation: insert the probe, gently stir, and watch the results stabilize
• Automatic Temperature Compensation (ATC) for highest accuracy
• Simple two-point calibration for ongoing precision
• Extreme accuracy to ±0.02 pH and a broad measurement range (-2.00 pH to 16.00 pH)
• Gel-filled, double junction lab grade electrode included for low-maintenance high performance
• Durable stainless steel temperature probe
• Long 3’ probe cables for maximum flexibility
• Auto shutoff and low power consumption
• Up to 300 hours of continuous use

Care and Use

To ensure your MW102 PRO+ pH meter delivers exceptional results year after year, proper maintenance of the probe is essential. Both the glass sensing bulb and reference junction are critical for accuracy.

Sensing bulb

The glass bulb will gradually lose sensitivity over time. Regular attention will extend its life.

Reference junction

The reference junction balances your sample against a reference point. Clogging can reduce reliability, so keeping it clean is important.

Follow these tips to maintain your pH electrode and maximize longevity:

Cleaning and Storage

All pH sensors age, but you can maximize performance by proper cleaning and storage. Order the Milwaukee pH Maintenance Kit code PH-Main to keep your pH electrode prepared for high-accuracy readings!

Storage

Always store your pH probe hydrated using storage solution MA9015. Only use tap water short term if MA9015 is unavailable. Never use distilled water or RO water for storage as it will damage sensitivity. The ideal method is to keep the probe cap filled with storage solution or calibration buffer and secured tightly. Store the electrode upright to minimize leakage.

Cleaning

Regularly clean your electrode, especially if working with organic-rich samples. Soak in MA9016 cleaning solution for about 20 minutes to ensure optimal responsiveness.

Calibration

Keep your MW102 PRO+ pH meter perfectly tuned by calibrating routinely, particularly after cleaning or extended storage.

Choose Milwaukee for your digital pH meter needs and elevate your accuracy, consistency, and confidence in every test.