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Secures Your AFB Staining and Eases Slide Reading

Easier and faster reading and no daily maintenance with RAL® STAINER. This closed fully automated bath system offers a unique fixative solution that prevents any cross-contamination.


Disclaimer: Product availability varies by country. Please consult your local bioMérieux representative for product availability in your country. 

System Overview

The ideal solution for your routine analyses, RAL® STAINER gives you the confidence of high-quality reproducible AFB staining

The staining process requires expertisepatience, and a safe environment. Staining can be tedious, especially for mycobacteria. Make your life easier with the RAL® STAINER automated staining unit. Compact, efficient, and flexible, its original RFID (radio-frequency identification) system eliminates any potential protocol errors. Without changing your staining practices, you can ensure the safety of your staff. Our reagents offer includes Auramine fluorescent staining to ease and speed up slide reading.


  • Standardization of the staining process
  • Ready-to-use reagents: place them directly into the instrument
  • Intuitive user interface
  • Pre-programmed, customizable protocols



  • 3 different stainings can be performed on board*: 
    • ZN
    • Auramine with a red background
    • Auramine with a dark background 
  • 10 recorded protocols (adjustable if required)
  • Capacity to stain 1 to 20 slides (2 racks of 10 slides)

*Easy switch from one kit to another.


  • Automatic reagent draining past the expiry date
  • Level detectors in each reagent bath & in the waste container
  • Automatic slide drying
  • Password-based user identification
  • Cycle and reagent traceability
  • Chemical fixation step onboard the instrument
  • No cross-contamination between slides


  • No direct handling of reagents
  • No mechanical parts in contact with the stains
  • Closed system
  • Active carbon filter to neutralize reagent vapors


RAL® STAINER replicates the bath staining process by automating manual techniques and offering optimal result quality. Stainings are standardized and reproducible. The recommended staining protocols have been optimized by CELLAVISION-RAL DIAGNOSTICS together with reference laboratories. However, should special contrasts be required, the dipping time in each reagent can be adjusted and validated by the user.

  • RAL® STAINER enables our customers to perform automated AFB staining of human specimen smears (mainly sputum) and pure strain isolate smears
  • RAL® STAINER works exclusively with CELLAVISION-RAL DIAGNOSTICS stains, well known for their quality since 1916


RAL STAINER - 9304423 - 4 pages.indd

Services & Support 

bioMérieux supports your lab by offering a high-level of service that extends the life of your instrument. Our service offering includes: 

  • Installation: by bioMérieux Professionals
  • Training: by bioMérieux Field Applications Specialists

System Services

Systems are a major investment for your lab. Night and day, you depend on them to help you provide clinicians with fast, reliable results for better patient care. With System Services from bioMérieux: maximize routine lab workflow, cover increased productivity needs, and deliver high quality patient results confidently and continuously.

Specs & Resources 

Technical Features and Specifications

  • Bath staining machine
  • LCD touch screen
  • Utilizes CELLAVISION-RAL Staining Kits
  • RFID tags
  • Autonomy from 1 to 20 slides
  • 2 loading/unloading/drying zones
  • 4 staining stations, 1 rinsing station
  • Rinsing liquid reservoir
  • Automatic waste removal in 10L container
  • Height: 62.4cm – Diameter: 42.5cm
  • Weight: 28 kg
  • Supply voltage range: 100-240V/50-60Hz/150 VA



RAL® STAINER Brochure 

Tuberculosis Monograph 

Diagnosis of Mycobacteria Reading Guide