Bio-Rad PhD lx System or Elisys Uno: Which ELISA Analyzer To Choose?

Automated ELISA analyzers such as the Elisys Uno and PhD lx System offer a range of features and specifications to help you determine the best fit for your laboratory's needs.

Company HUMAN Bio-Rad
Model Elisys Uno PhD lx System
Analyzer type 1-plate fully automated ELISA analyzer 2-plate, open platform, that can run ELISA and Chemiluminescence (CLIA) assays
Plate loading capacity 1 plate/run 2-plate
Samples positions 96 (without predilution) EIA: 192 or IFA: 96
Reagent positions 27 positions on one reagent rack EIA: 8 or IFA: 4
Internal sample/reagent barcode reader No External
Pipetting system 1 steel needle (no tips) Single probe
Computer External External
Interfaces USB USB
LIS Ethernet, uni-directional, free definable protocol, manual execution Bi-directional, RS232, TCP/IP

*All information is correct as of March 2024


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Selecting the right automated ELISA analyzer can significantly enhance laboratory efficiency and accuracy. This comparison between the Elisys Uno and Bio-Rad PhD Ix System highlights their key features to help you decide which one best meets your laboratory needs.

Analyzer Type

The type of analyzer defines its functionality and versatility in performing various assays. A fully automated system can streamline operations and improve throughput.

  • Elisys Uno: A 1-plate fully automated ELISA analyzer, ideal for smaller labs or lower throughput needs.
  • Bio-Rad PhD Ix System: A 2-plate open platform that can run both ELISA and Chemiluminescence (CLIA) assays, offering more flexibility for different testing requirements.

Plate Loading Capacity

The number of plates an analyzer can handle at once impacts its throughput and efficiency. Higher capacity allows for more simultaneous testing, saving time.

  • Elisys Uno: Can handle 1 plate per run, suitable for lower throughput requirements.
  • Bio-Rad PhD Ix System: Capable of processing 2 plates, ideal for medium to high throughput needs.

Samples Positions

Indicates the number of sample tubes the analyzer can hold, affecting the volume of tests it can process at once. More sample positions enable higher throughput.

  • Elisys Uno: Accommodates 96 samples without predilution, supporting smaller batch testing.
  • Bio-Rad PhD Ix System: Supports 192 samples for EIA or 96 for IFA, making it efficient for larger batch testing.

Reagent Positions

The number of reagent slots determines the variety of tests the analyzer can perform simultaneously. More positions enhance flexibility in handling different assays.

  • Elisys Uno: Offers 27 positions on one reagent rack, allowing a range of tests.
  • Bio-Rad PhD Ix System: Provides 8 positions for EIA reagents or 4 for IFA, offering specific configurations for different testing needs.

Internal Sample/Reagent Barcode Reader

Automated barcode readers enhance sample tracking and identification, reducing errors and improving workflow efficiency.

  • Elisys Uno: Does not include an internal barcode reader, requiring manual tracking.
  • Bio-Rad PhD Ix System: Features an external barcode reader for efficient sample and reagent tracking.

Pipetting System

Critical for accurate liquid handling, the pipetting system directly affects test precision and repeatability.

  • Elisys Uno: Utilizes 1 steel needle without tips, suitable for basic pipetting needs.
  • Bio-Rad PhD Ix System: Employs a single probe, providing precise liquid handling capabilities.


The type of computer (internal or external) used to control the analyzer affects its integration and ease of use.

  • Both analyzers: Utilize external computers, offering flexibility in upgrades and maintenance.


Connectivity options determine how well the analyzer integrates with other lab equipment and information systems.

  • Both analyzers: Equipped with USB interfaces, providing basic connectivity needs.

Laboratory Information System (LIS)

Integration with LIS enhances data management and workflow efficiency, crucial for modern laboratories.

  • Elisys Uno: Supports Ethernet, uni-directional communication with free definable protocol and manual execution.
  • Bio-Rad PhD Ix System: Features bi-directional communication via RS232 and TCP/IP, providing comprehensive integration with LIS systems.


When choosing between the Elisys Uno and Bio-Rad PhD Ix System, consider your laboratory's specific needs regarding throughput, flexibility, and integration capabilities. The Elisys Uno is ideal for smaller labs with lower throughput needs, while the Bio-Rad PhD Ix System offers greater flexibility and higher capacity for larger operations. Evaluate these features to select the analyzer that best fits your laboratory's requirements.