RAPIDChem 744/754 Electrolyte and Lithium Testing Analyzers

Perform electrolyte and lithium analysis simply and accurately

Siemens RAPIDChem® analyzers are a cost-efficient solution for rapid electrolyte and lithium testing in busy laboratories and clinics. Designed to accommodate a variety of specimen types, RAPIDChem 744/754 analyzers generate fast patient results while reducing operator exposure to biohazards.

  • Simple, efficient and intuitive operation
  • Multiple sampling options: whole blood, plasma, serum and/or diluted urine samples
  • Safe operation with a closed waste cartridge system and self-cleaning sample probe
  • Low maintenance requirements help increase uptime
  • Convenient RS-232 connectivity for seamless integration with your LIS/HIS or other data management system


RAPIDChem 744/745 Analyzers

RAPIDChem 744/745 Analyzers

Fully automated calibrations and continuous performance monintoring help ensure exceptional levels of analyical precision and reliability.

Biosafe operation

Biosafe operation

Simple, snap-in replacement of self-contained re-agent module. Used calibrants and waste are contained in a closed system for safe and easy disposal.

Simple, efficienct operation

Simple, efficienct operation

Intuitive yes/no prompts for easy operation with minimal operator training. Results are displayed and printed in seconds.

Versatile sample options

Versatile sample options

Accurate results from whole blood, plasma, serum and diluted urine samples.

50 Years Blood Gas Innovation

50 Years Blood Gas Innovation


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Features & Benefits

Perform lithium and electrolyte measurements on a variety of sample types efficiently with RAPIDChem® 744/754 analyzers.

Simple, Efficient Operation

  • Intuitive yes/no prompts require minimal training
  • Results are displayed and printed in seconds
  • Ergonomic bench-top design requires minimal lab space
  • Minimal maintenance requirements; only seconds per day 

Versatile Sampling Options

  • Use whole blood, plasma, serum and/or diluted urine samples
  • Direct analysis from syringes, micro-capillary tubes and commonly used containers without the need for special adapters
  • Small sample size required 

Biosafe Operation

  • Waste contained in a closed cartridge for safe, easy disposal
  • Self-cleaning sample probe helps maintain sample integrity and enhance user safety 

Convenient Data Management and System Connectivity

  • Onboard QC program calculates and stores monthly QC statistics for easy recall
  • Out-of-range patient results are flagged for fast and easy operator reference
  • RS-232 port for seamless integration with your LIS/HIS

Reliable Technology

  • Long-life sensors help to maximize analyzer uptime
  • Snap-in replacement of self-contained reagent module
  • Modular design provides easy access for valve and sensor replacement  


Sample Type: Serum, Plasma, Whole Blood
Sample Type: Urine

Technical Specifications

Sample Size

Normal55 µL
Capillary50 µL
Urine300 µL          

Sample Type

Whole Blood
Diluted Urine

Analysis Time

35 seconds                             
Urine60 seconds(Na+/K+/Cl only)


Automatic or on-demand

Parameter Specifications

System Size and Weight
Width37.0 cm (14.5 in.)
Depth18.0 cm (7 in.)
Height32 cm (12.5 in.)
Weight7.3 kg. (16 lbs.) with reagent module
 Power Requirements
Voltage:100V (85-110V), 120V (102-132V), 230V (187-242V), 240V (204-264V)
Frequency:50/60 Hz 
Temperature:15°C to 32°C 
 External Interface
 RS-232 Port 
 Data Storage 
 64 Patient results with Operator ID, Patient ID, Date and Time
QC (up to 31 results for each of 3 levels)