FC2023 is an amplified double-junction pH electrode with a built-in temperature sensor, and connects to the meter via a quick-connect DIN connector. This type of connector is available on meters such as the HI98190.

FC2023 is an amplified pH electrode with a built-in temperature sensor. This probe features a low-temperature (LT) glass, conical bulb, food-grade PVDF body, and an open junction design with a viscous gel electrolyte.

Low-temperature glass formulation

The glass uses an LT glass formulation, which has a lower resistance of approximately 50 megohms compared to the general-purpose (GP) glass with a resistance of approximately 100 megohms. This is beneficial because many foods are stored at low temperatures. As the glass temperature in the sample decreases, the resistance of the LT glass will increase at ambient temperature, approaching that of GP glass. If GP glass is used, the resistance will increase above the optimum resistance for the high-impedance input of the pH meter. The FC2023 is suitable for samples from 0 to 50°C.°   

Conical glass tip

• The conical design allows penetration into solids, semi-solids, and emulsions for direct pH measurement in foods, including meat, cheese, yogurt, and milk.

• PVDF body

• Polyvinylidene fluoride (PVDF) is a food-grade plastic that resists most chemicals and solvents, including sodium hypochlorite. It has high abrasion resistance, mechanical strength, and resistance to UV and nuclear radiation. PVDF is also resistant to fungal growth.

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 readings.

Quick-connect DIN connector

The FC2023 uses a quick-connect DIN connector, making probe installation and removal simple and easy. This type of connector is proprietary to the meter. Refer to the specification sheet for compatible meters.