Hanna Refillable pH Electrode with Calomel References and BNC Connector - HI1144B

The HI1144B is a refillable glass pH electrode engineered for professional laboratory, industrial, and environmental applications. Featuring a robust glass body with a single junction and calomel (Hg/Hg₂Cl₂) reference system, this electrode provides accurate and stable pH readings without silver interference—essential for measurements using Tris buffer.

With a spheric high-temperature glass bulb, the HI1144B delivers precise measurements across a wide pH range (0–14) and temperature range (0–60°C). The single ceramic junction assures reliable reference flow of 15–20 µL/h, while the spheric tip (9.5 mm diameter) guarantees optimal sample contact. The 120 mm body length and 175.5 mm overall length, paired with a 12 mm diameter, make it suitable for standard laboratory instruments. A durable coaxial 1 m cable with a BNC connector ensures widespread compatibility with most laboratory pH meters.

• Single junction, refillable glass body design enhances chemical compatibility and durability.
• Calomel reference system ideal for silver-free, stable measurements in specialized buffers.
• High temperature glass for measurements from 0–60°C and 0–14 pH range.
• Spheric tip for optimal sample contact and robust measurements.
• 1 m coaxial cable with universal BNC connector.
• Refillable with 3.5M KCl electrolyte; easily maintained for extended lifespan.
• Maximum pressure rating of 0.1 bar; compatible with most laboratory sample types.
• No built-in temperature or matching pin sensors; purpose-built for versatility.
• Chemical, water, environmental, and biotech labs benefit from advanced reference and refill design.
• Recommended for Tris buffer and other critical pH assays where Ag/AgCl systems interfere.

This HI1144B pH electrode is trusted in research, QC, academic, and industrial lab environments. Browse more laboratory electrochemical probes and accessories in the Laboratory pH Electrodes section on EnvMart.