MA991B/1 BNC GLASS ELECTRODE

The Milwaukee MA991B/1 is a professional-grade, double junction glass pH electrode designed for high-precision laboratory and field measurements. Featuring a universal BNC connector, this electrode is the ideal replacement or upgrade for users who require chemical resistance and long-term stability when testing difficult or “dirty” samples.

Key Features & Benefits

1. Double Junction Technology

Standard single-junction electrodes are prone to clogging when testing samples like juices, wine, or wastewater. The double junction design of the MA991B/1 provides an extra barrier against contamination, significantly extending the life of the electrode and ensuring faster, more stable readings in complex liquids.

2. Durable Glass Body

Constructed with a high-quality glass body, this electrode is resistant to a wide variety of aggressive chemicals. Unlike plastic-bodied probes, glass electrodes can handle higher temperatures and are easier to clean, making them the gold standard for laboratory research.

3. Universal BNC Connection

The MA991B/1 features a standard BNC connector, making it compatible with almost any pH meter on the market, including the Milwaukee MW-series (MW101, MW102, MW150, MW151) and other professional brands.

4. Fast Response & Accuracy

The specialized sensing tip is designed for rapid ion exchange, providing the high-speed response times necessary for titration or high-volume testing. It is engineered to maintain accuracy even when used in low-conductivity water.

Technical Specifications

Ideal Applications

• Chemical Laboratories: General-purpose pH testing and chemical research.

• Hydroponics & Agriculture: Monitoring nutrient solutions where organic matter might clog standard probes.

• Wine & Brewing: Testing high-protein or tannin-rich liquids that require a double junction to prevent contamination.

• Wastewater Treatment: Measuring samples with suspended solids or contaminants.

Maintenance Tip:

To ensure maximum lifespan and accuracy, always store the MA991B/1 in MA9015 storage solution. Never let the glass bulb dry out, and avoid storing it in distilled or deionized water.