Reactifs RAL
Medical Biology Stains
Hematology

May-Grünwald Giemsa

Staining according to Pappenheim enables to carry out blood and bone-marrow differential cell counting.  It combines two stains:  May-Grünwald and Giemsa.

These are neutral mixtures with very distinct properties.  They are not active in an alcoholic medium and only react selectively when released into a buffered aqueous solution.  This release induces precipitation of neutral stains.  May-Grünwald stains acidophilic cells and the neutrophilic granulations of leukocytes, whereas Giemsa stains the cytoplasm of monocytes and lymphocytes, as well as nuclear chromatin.

Wright Stain

A Fast Stain of May-Grünwald Giemsa

Ral 555® is a fast-acting variation of the May-Grünwald Giemsa stain: 

  • In haematolgy, it allows differential staining of blood smears (white blood cell count, morphological erythrocyte analysis and testing of parasites).  It is ideal for emergencies and for studying smears in specimens showing as positive on cell counters machines
  • In cytology, it allows cytological examinations of fluids and of fine-needle punctures
  • In pathology, it allows emergency examination of frozen tissue section completed during surgical operation.

 

Myeloperoxidase Stain

Peroxydase granules form a insoluble bright red compound with Pyronine in presence of Alpha-Naphtol and hydrogen peroxyde.  Leukocyte nuclei appear blue with Mayer's Haematoxylin.

Various:

  • Laverans panchrome Stain
  • Evans Blue
  • Brilliant Cresyl Blue
  • Methylene Blue Medicinal for Analyses
  • Unna’s blue, Solution
 

Bacteriology

Fast Fluorescent Staining for Mycobacteria
Gram Nicolle’s Stain
Gram Hücker Stain:

  • Slow-Acting for manual Staining
  • Fast-Acting for Staining Machines

Gram Hücker Ral® Kit
Gram-Positive and Gram-Negative
Bacteria Staining Kit

Ziehl-Armand stain

Quick-TB RAL® Kit
Kit for cold-satining of Mycobacteria

Ziehl-Armand staining is a variant of Ziehl-Neelsen technique.  Its principle is based on the stain-fixing capability of mycobacteria, in spite of the combined action of a strong acid and an alcohol : this is called acid-alcohol-fastness.  Use of Armand's stain enables simultaneous discolouration of all bacteria, except mycobacteria, and the colouration of the background of the preparation.  In this fat cold staining technique, contact period with Carbolic Fuchsin Ral is reduced.

Various:

  • Methylene Blue for Bacteriology
  • Fuchsin Basic for Bacteriology
  • Fuchsin S Acid
  • Neutral Red
  • Safranine O
  • Methyl Green

Parasitology

Fast Staining: Pneumocystis carinii, Plasmodium, Leishmanie

Various:

  • Lactophenol Blue
  • Amann’s Lactophenol
  • Mercurothiolate tincture for M.I.F. technique

Cytology

Papanicolaou’s Stain
Fast Stain of Cytologic Puncture
Harris Shorr Stain
Haemalun-Shorr Stain

Various:

  • Carmine 40 for histology
  • Haematoxylin Pure
  • Haematein
  • Light Green SF
  • Eukitt Mounting Fluid
  • Cytofixer (aerosol)
  • Eosin Extra Crystallized Yellowish
  • Nigrosine Water Soluble

Histology

Haemalun-Eosin/ Haemalun Phloxine Stain
Fast Stain for Emergency Pre-Operative Examination

Various:

  • Alcian Blue 8 GX
  • Toluidine Blue
  • Bouin’s Fluid-water sol’n
  • Bouin’s Fluid-alcoholic sol’n
  • Alum Carmine
  • Eosin Extra Crystallized yellowish
  • Erythrosin 239 for histology
  • Haematein
  • Haematoxyline Pure
  • Fuchsin S Acid
  • Saffron, Gatinais in alcoholic Sol’n
  • Mucicarmin
  • Phloxine B
Email us or visit Reactifs RAL website for further information.
 
 

  
Email
info@mrlcybertec.com