IoNEX Electrolyte Analyzer

IoNEX Electrolyte Analyzer (JOKOH - Japan): High-Precision Measurement Solution for Laboratories

The IoNEX electrolyte analyzer by JOKOH (Japan) measures 5 parameters (Na+, K+, Cl-, Ca2+, pH) with rapid processing speed, reagent efficiency, and optimal performance for laboratories.

An electrolyte analyzer is an indispensable piece of equipment in medical laboratories, intensive care units (ICUs), and hemodialysis centers. Manufactured by the renowned brand JOKOH (Japan), the IoNEX series stands out with its compact design, modern electrode technology, and the ability to accurately measure a wide variety of specimen types.

1. Overview of the JOKOH IoNEX Electrolyte Analyzer

The IoNEX utilizes the direct Ion-Selective Electrode (ISE) measurement method, enabling accurate analysis of ion concentrations in blood and other biological fluids. The device features a compact footprint of 27 x 34.5 x 36.5 cm and weighs only 8 kg, making it easy to position in any laboratory space.
The analyzer supports simultaneous measurement of 5 parameters: Na+ (Sodium), K+ (Potassium), Cl- (Chloride), Ca2+ (Ionized Calcium), and pH.

2. Key Highlights of the IoNEX Electrolyte Analyzer

• Diverse Sample Types: Whole blood, serum, plasma, diluted urine, and hemodialysis fluids (Dialysate A, Dialysate B, and combined A+B).
• Flexible and Customizable Configurations: Users can choose from 1 of 8 electrode configurations based on the actual needs of the laboratory (ranging from the basic Na+/K+ setup to the maximum Na+/K+/Cl-/Ca2+/pH configuration).
• High Repetitive Accuracy (CV ≤ 0.05%)
• Smart pH-Corrected Ca2+ at 37°C: A critical issue in electrolyte testing is that Ca2+ results are highly influenced by pH and temperature. In blood, calcium exists in both ionized and protein-bound forms, and the ratio of ionized Ca2+ changes with pH fluctuations. Therefore, simultaneous pH measurement is vital for evaluating and adjusting Ca2+ results. The IoNEX is designed with an electrode temperature control function, stabilizing measurement conditions to calculate the corrected Ca2+ value at 37°C. This is a highly valuable feature for laboratory testing requiring electrolyte analysis and acid-base balance assessment.
• Independently Packaged Reagents: The IoNEX utilizes an independently packaged reagent system (Cal 1 and Cal 2). This design allows laboratories to proactively replace only the specific reagent that has run out without needing to replace the entire reagent pack, optimizing daily operational costs.
• Rapid Analysis Speed:
• Result turnaround time: 35 seconds/sample (without temperature control mode) or 60 seconds/sample (with temperature control mode).
• Small sample volume: Requires only 100 µL for blood/serum/plasma samples and 300 µL for dialysate fluids.
• User-Friendly Interface: Equipped with a large color LCD resistive touchscreen, allowing technicians to operate the screen seamlessly even while wearing medical gloves.

3. Detailed Technical Specifications of the IoNEX Analyzer

• Manufacturer: JOKOH (Japan)
• Measurement Method: Direct Ion-Selective Electrode (ISE)
• Measured Parameters: Na+, K+, Cl-, Ca2+, pH
• Throughput/Speed: 35 seconds/sample (without temperature control) / 60 seconds/sample (with temperature control)
• Display: TFT-LCD color touchscreen
• Printer: Built-in thermal printer
• Auto-sampler: Optional upgrade (20-position sample tray)
• Data Storage: 10,000 patient data records
• Connectivity: RS232C port, supports CSV data export
• Dimensions & Weight: 27 cm (Width) x 34.5 cm (Depth) x 36.5 cm (Height) | 8 kg

4. Why Choose the JOKOH IoNEX Electrolyte Analyzer?

• High Stability: Standardized under strict Japanese quality control standards, ensuring exceptional reproducibility and high accuracy.
• Flexible Operation: Easily configured with or without the optional Auto-sampler or temperature control module to match the laboratory's sample workload.
• Data Management: Fully compatible with Laboratory Information Systems (LIS) and offers convenient CSV file exporting.

Frequently Asked Questions (FAQ)

• Can the IoNEX analyzer measure dialysate fluids?
Yes. The IoNEX supports 3 dedicated measurement modes for hemodialysis fluids (Dialysate A, Dialysate B, and combined Dialysate A+B).
• How many samples can the auto-sampler tray hold?
If upgraded with the optional Auto-sampler, the tray can hold and load up to 20 patient samples simultaneously.