Milwaukee MA991B/1 Lab-Grade Glass pH Probe – BNC Connector
Precision pH measurement built for education, student labs, and general-purpose water testing. The Milwaukee MA991B/1 is a professional-grade single-junction glass pH electrode engineered for environments where accuracy, ease of cleaning, and minimal maintenance matter most — from high school science classrooms to university research labs.
Picture a busy lab period: students rotating through stations, each needing reliable, repeatable pH readings. The MA991B/1's smooth glass body wipes clean in seconds, the gel-filled reference never needs refilling, and the universal BNC connector snaps onto any Milwaukee meter in one click. Less downtime. More learning.
Key Features
- ✅ Lab-grade glass electrode — accurate, repeatable pH readings for research and teaching
- ✅ Single-junction Ag/AgCl reference — stable reference potential for general-purpose measurement
- ✅ Gel-filled electrolyte — maintenance-free; no refilling ever required
- ✅ Easy-clean spherical glass membrane — rinse and reuse between students instantly
- ✅ Universal BNC quick-connect — fits any Milwaukee BNC meter, monitor, or controller
- ✅ Wide pH range: 0–13 — covers virtually all educational and general lab applications
- ✅ Full temperature range: 0–100°C / 32–212°F — suitable for hot and cold sample testing
- ✅ 1-metre / 3 ft cable — flexible reach for benchtop and field setups
- ✅ Made in Romania — European manufacturing quality standards
Technical Specifications
| Model |
MA991B/1 |
| pH Range |
0.0 – 13.0 pH |
| Temperature Range |
0–100°C / 32–212°F |
| Reference Type |
Single junction, Ag/AgCl |
| Reference Electrolyte |
Gel-filled (maintenance-free) |
| Reference Junction |
Ceramic, single |
| Membrane Shape |
Spherical glass |
| Body Material |
Glass |
| Connector Type |
BNC (quick-connect) |
| Cable Length |
1 m / 3 ft |
| Weight |
8 oz |
| Grade |
Laboratory |
| Country of Origin |
Romania |
| Barcode / UPC |
810666009211 |
Compatibility
Works with any Milwaukee Instruments pH meter featuring a BNC connector — including portable handheld meters, benchtop meters, wall-mounted monitors, and controllers. Also compatible with third-party BNC-equipped instruments.
Ideal Applications
- High school and university science classrooms
- Student and teaching laboratories
- Environmental water quality testing
- General laboratory research and QC
- Aquarium and aquaculture water monitoring
- Hydroponics and nutrient solution testing
- Food and beverage quality control
Why Choose the MA991B/1 for Education?
Busy teachers and lab managers need equipment that works — every time, for every student. The MA991B/1's gel-filled reference eliminates electrolyte refilling, the glass body cleans in seconds with distilled water, and the BNC connector ensures a secure, repeatable connection to your existing Milwaukee meters. No fuss. No downtime.
Maintenance & Care
Rinse the glass body with distilled water after each use and store with the protective cap in place. Calibrate regularly using pH 4.01, 7.01, and 10.01 buffer solutions for optimal accuracy. No electrolyte refilling required.
Note: Meters sold separately.
