The model 123 ion selective electrode meter is designed for the determination of sodium, potassium, calcium, hloride, and pH in foods, beverages, and other feed and food products. The portable and robust build allows the flexibility of bringing the meter to the samples rather than bringing samples back to the lab. The simple‑to‑use interface and clear LCD readout allows for quick results with limited training requirements. Make testing quicker, easier, and portable with the Agilent 123 meter.
This procedure is used to measure calcium in fruit juices and other liquids in batches of up to 15 samples for a single calibration and slope.
Meter setup
1. Place the meter on a flat surface, away from drafts and out of direct sunlight.
2. Connect the calcium reference electrode (clear plastic barrel) to the electrode jack for Channel 1.
3. Connect the calcium sensing electrode to the electrode BNC connector for Channel 1.
4. Slide the electrodes into the electrode holder and immerse in a sample cup of approximately 40 mL of 100 mg/100 mL calcium calibration standard.
5. Set the Channel 1 CAL switch on the back of the meter to 100.
6. Set the Range switch to 2000 for Channel 1.
7. Set the Mode knob for Channel 1 to Na/K/Ca2+.
