The spare electrode S-12 is a very sensitiv, snap and exact pH electrode for the measurement in liquids. Due to its small size you can easily use it where there is little place e.g. below a aquarium cover. By its Mini-BNC connection and 1m cable it is compatible to almost all pH measuring using Mini BNC such as e.g. our P05.

In our shop you will also find any kind of PH, ORP, EC, Oxygen, TDS electrodes with BNC and Mini-BNC for liquids as well as for direct soil-, food-, meat- and cheese- measurement or materials of similar consistency.

This type of electrodes does not work with digital controlers made by:
Aqua Medic, Dennerle, Dupla, EME, GHL, HANNA, Hobby, JBL, Sera, Tetra, Tunze. For this types please use our special ph electrode S17. To decide which electrode is the most suitable for your device and appplication please see our electrode guidebook:

For calibration we recommend our calibration liquid (FL3), for maintenance our 3mol maintenance liquid (FL1) and our cleaning liquid (FL5). All available in our shop.

Click here for further calibration and maintanance liquids

You get prescriptions for additional production of own variable calibration liquids for pH of values pH3 - to pH8 and electrode liquid to maintenance & keeping.