Milwaukee MA991B/1 Glass pH Replacement Probe
The Milwaukee MA991B/1 is a lab grade single junction, gel filled glass replacement pH Probe for any Milwaukee BNC connector meter This electrode is designed for the education market, is easy-to-clean and great for students to learn with. The MA991B/1 has a glass body, high impedance, low maintenance (no refilling required) and is designed for fast accurate response. It comes with a 1 meter (3') cable, BNC connector and can withstand temperatures to -5 to 70°C (23 to 158°F) (meter(s) sold separately).
The probe connects quickly and tightly with a BNC connector. No worries of slipping off.
pH Range: 0 to 13
Temperature Range: 23 to 104°F (-5 to 40°C)
Shaft: Glass
Reference Electrolyte: Gel, KCL 3.5 m
Reference Junction: ceramic, single
Reference Type: single, Ag/AgCl
Shape of Membrane: Spheric
Maximum Pressure: 0.1 Bar
Connector Type: BNC
Cable Length: 3 Feet (1 meter)
Shaft Length: 4.72 inches (120 mm)
Diameter: 0.47 inches (12 mm)
Frequently Asked Questions
Clear answers to help you choose the right water testing solution with confidence
Which brands of water testing kits do you supply?
Do you provide kits for both home and professional use?
Yes — whether you’re a pool or spa owner, aquarium keeper, utility company, or a university laboratory, we have the right solution for your needs.
Can I arrange servicing or calibration for my photometer?
Absolutely. We also provide servicing and calibration to keep your photometers accurate and reliable.
How quickly do you dispatch orders?
Orders placed before 2:30 pm (Monday–Friday) are dispatched the same day. We also ship on Saturdays for your convenience.
Which couriers do you use for delivery?
We deliver through UPS, DPD, and Royal Mail. You can also choose to upgrade to next-day delivery at checkout.
What is your return policy?
We accept returns within 14 days of delivery provided the items are unused, in their original packaging, and in resalable condition. Please contact our team before returning any items.
Can I place bulk or business orders?
Yes, we welcome bulk, trade, and institutional orders. For tailored pricing or large quantities, please get in touch with us directly.
How can I get help if I’m unsure which kit to buy?
You can call us at 📞 +44 (0)115888 2726 and our team will guide you in choosing the most suitable kit for your needs.