Product Overview

FC230B Special PVDF composite pH electrode Measuring range: 0 to 12 pH   Temp. range: 0 to 50℃; 32 to 122 ℉

• Hanna Instruments offers a wide variety of pH electrodes for many different applications. The type of glass used to sense pH, bulb shape, body material, connection type, reference type, and electrolyte used are just some of the design considerations.

• FC230B uses low temperature (LT) glass, a conical bulb, a food-grade PVDF body, and an open junction with viscolene gel electrolyte.

• Low temperature glass

Figure 1 Details:

• Low temperature glass formulation

• Compared to general purpose (GP) glass with a resistance of approximately 100 megohms, the glass tip uses a special LT glass formulation with a resistance of approximately 50 megohms. This is beneficial because many foods are stored at low temperatures. As the temperature of the glass in the sample decreases, the resistance of LT glass will increase, approaching the resistance of GP glass at ambient temperature. If GP glass is used, the resistance will increase above the optimum resistance for the high impedance input of the pH meter. FC230B is suitable for samples from 0 to 50°C.

Figure 2 Details:

• Conical glass tip

• The conical tip design penetrates solids, semi-solids, and emulsions to directly measure pH in food.

Figure 3 Details:

• Stainless steel blade

• An optional stainless steel blade is attached to the probe to easily penetrate meat even in frozen samples. Cutting into the meat will allow the pH glass and reference junction to contact the sample, allowing direct pH measurement without extensive sample preparation. FC098 (20 mm; 0.75 in) and FC099 (35 mm; 1.38 in) are a set of two stainless steel piercing blades to be used with the FC230B

Figure 4 Details:

• 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 also resists fungal growth.

Figure 5 Details:

• 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 (viscolene) 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, resulting in fast response and stable readings.

• Figure 6 Details: BNC connector

• FC230B uses a BNC connector. This type of connector is universal because it can be used with any pH meter that has a female BNC probe input. Other types of connectors include DIN, threaded, T-type, and 3.5mm, etc. These types of connectors tend to be proprietary connectors for specific types of meters and are not interchangeable.