HI14140 features a unique open junction design that prevents clogging, and its flat tip makes it ideal for pH measurement on skin, paper, food, and various surfaces. The probe features a 3.5 mm connector, specifically designed for use with Hanna Instruments"edge" series pH meters

HI14140 uses low temperature (LT) glass, a flat-tip bulb, a glass body, and an open junction with viscous gel electrolyte.

Built-in microchip

The built-in microchip stores sensor type, serial number, and calibration information, including date, time, offset, slope, probe condition, and buffers used. Once the electrode is inserted, this information is automatically retrieved via the edge. The ability to transfer information allows hot-swapping of the probe without recalibration. All pH measurements are performed within the electrode and transmitted digitally to the meter.®

Low temperature glass formulation

The glass uses a special LT glass formulation, which has a lower resistance of approximately 50 megohms compared to general purpose (GP) glass with a resistance of approximately 100 megohms. This is beneficial because many foods are stored at low temperatures. HI14140 is suitable for samples from 0 to 50°C.

Flat

Flat is recommended to optimize surface contact for measuring foods and samples that are not easily penetrated. In addition, the recessed flat is easy to clean and prevents food solids from accumulating on the sensor.

Glass body

The glass body is ideal for laboratory use. The glass resists many harsh chemicals and is easy to clean. The glass body also allows heat to be transferred quickly to the internal reference electrolyte. The mV generated by the reference cell is temperature-dependent. The faster the electrode reaches equilibrium, the more stable the reference potential.

Open junction reference

Suspended solids and proteins found in food can clog traditional ceramic reference junctions. This clogging will impede the measurement circuit between the indicating electrode and the internal reference, resulting in slow response times, unstable readings, and frequent electrode replacement. The open junction design consists of a solid gel interface (viscous agent) between the sample and the internal Ag/AgCl reference. This interface not only prevents silver from entering the sample, but also makes it less prone to clogging, enabling fast response and stable food measurements.

Digital 3.5 mm connector

Inserting the electrode has never been easier. No alignment or broken pins, simply connect the 3.5 mm plug and start. Automatic recognition of digital electrodes.