ELITech Group Selectra ProXS or HumaStar 100: Which Clinical Chemistry Analyzer To Choose

Explore the features and specifications of the HumaStar 100 and Selectra ProXS clinical chemistry analyzers to determine which one best fits your laboratory's needs.

Company HUMAN ELITech Group 
Model HumaStar 100 Selectra ProXS
Throughput max. tests/h 100 75
Reagent positions 30 30
Reagent cooling independent from main power switch Optionally cooled to approximately 10°C
Sample positions 60 25
Sample barcode reader Internal Optional
Cuvettes 80 reusable 48 disposable
Water consumption (l/h) < 1 (8 ml/test) < 0.25 l/h

*All information is correct as of December 2023



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Selecting the right clinical chemistry analyzer is crucial for laboratories aiming to optimize testing efficiency and accuracy. In this comprehensive comparison, we'll examine the features and specifications of two leading analyzers: the HumaStar 100 and ELITech Group Selectra ProXS, to help you choose the most suitable solution for your laboratory's requirements.


Efficient throughput is essential for laboratories processing a high volume of tests, ensuring timely results and streamlined workflow.

  • HumaStar 100: Offers a maximum throughput of 100 tests per hour, ideal for laboratories with moderate testing volumes.
  • Selectra ProXS: Provides a throughput of 75 tests per hour, catering to laboratories with diverse testing demands and ensuring efficient sample processing.

Reagent Positions

The number of reagent positions significantly influences the analyzer's flexibility in conducting various tests without frequent reagent changes.

  • HumaStar 100: Features 30 reagent positions, facilitating a broad spectrum of tests while maintaining stable reagent conditions.
  • Selectra ProXS: Also offers 30 reagent positions, ensuring versatility in testing capabilities and minimizing the need for frequent reagent changes.

Reagent Cooling

Maintaining optimal reagent temperatures is crucial for accurate and reliable test results, especially in demanding laboratory environments.

  • HumaStar 100: Ensures reagent stability with independent cooling from the main power switch, preserving reagent integrity throughout testing.
  • Selectra ProXS: Optionally cooled to approximately 10°C, providing laboratories with flexibility in managing reagent temperature and ensuring consistent test performance.

Sample Positions

Adequate sample positions are essential for managing varying sample volumes efficiently, accommodating the laboratory's diverse testing needs.

  • HumaStar 100: Offers 60 sample positions, facilitating efficient sample processing and optimizing laboratory workflow.
  • Selectra ProXS: Provides 25 sample positions, suitable for laboratories with moderate sample volumes and ensuring efficient sample management.

Sample Barcode Reader

Integration of an internal sample barcode reader enhances testing accuracy and traceability, ensuring seamless sample identification and result linkage.

  • HumaStar 100: Incorporates an internal sample barcode reader, improving testing process integrity and minimizing errors.
  • Selectra ProXS: Offers optional sample barcode reader functionality, providing laboratories with flexibility in sample identification and result tracking.


The type and capacity of cuvettes impact operational costs and environmental sustainability, influencing the analyzer's overall cost-effectiveness.

  • HumaStar 100: Utilizes 80 reusable cuvettes, promoting sustainable laboratory practices and minimizing waste, contributing to cost efficiency.
  • Selectra ProXS: Utilizes 48 disposable cuvettes, ensuring convenient testing processes and eliminating the need for cuvette cleaning, suitable for laboratories prioritizing convenience.

Water Consumption

Monitoring water consumption is essential for sustainable laboratory management, reducing operational costs and environmental impact.

  • HumaStar 100: Consumes less than 1 liter of water per hour (8 ml/test), contributing to cost efficiency and environmental sustainability.
  • Selectra ProXS: Consumes less than 0.25 liters of water per hour, ensuring efficient instrument operation while minimizing water usage.


Both the HumaStar 100 and ELITech Group Selectra ProXS offer advanced features and reliable performance tailored to meet the evolving needs of modern laboratories. The choice between the two depends on your laboratory's specific requirements, such as testing volume, flexibility, and operational preferences.