Bacteriology Staining

We stock a wide range of high quality diagnostic stains and reagents for all pathology disciplines including easy-to-use CE marked kits with full instructions. This catalogue contains a range from our full list. If there is something you require but cannot see, including powdered stains, please contact us and we will be happy to assist you. Many of our stains and kits are available from stock for next day delivery.

Gram Nicolle

Gram Nicolle Staining is a differential staining based on the structure of the bacterial cell wall which is different for Gram-positive and Gram-negative bacteria.

* Products included in the Kit Gram-Nicolle. Kit Gram-Nicolle: performs 230-300 slides, length of test: 3 minutes.

Product Product Code Product Sizes
Kit Gram-Nicolle CB364320 1 kit (4 x 240ml)
Carbolic Gentian Violet * CB320960 125, 1000, 2500ml
Lugol, PVP-Stabilised Solution * CB367400 240, 1000, 2500ml
Lugol Solution CB367300 240, 1000, 2500ml
Fast Differentiator (alcohol/acetone) * CB361510 240, 1000, 2500ml
Slow Differentiator (alcohol based) CB363030 240, 1000, 2500ml
Ziehl Carbolic Fuchsin CB320490 125, 500, 1000, 2500ml
Ziehl Carbolic Fuchsin 1/10 * CB364540 240, 1000, 2500ml



Gram Hücker

Gram Hücker staining is based on the same principle as the Gram Nicolle technique. The structure of the bacterial walls and their permeability to alcohol help differentiate the Gram-positive bacteria from the Gram-negative bacteria. In this technique, Carbolic Gentian Violet is replaced by our unique Crystal Violet Oxalate (which does not require filtration) and Ziehl Carbolic Fuchsin by Safranin.

* Products included in Kit-Gram Hücker variations. Kit Gram-Hücker: performs 230-300 slides, length of test: 3 minutes.

** Crystal Violet Oxalate reagent comes double filtered to ensure no deposits.

Product Product Code Product Sizes
Kit Gram-Hücker R (fast action) CB361520 1 kit (4 x 240ml)
Kit Gram-Hücker L (slow action) CB362860 1 kit (4 x 240ml)
Crystal Violet Oxalate ** CB361490 240, 1000, 2500ml
Lugol, PVP-Stabilised Solution * CB367400 240, 1000, 2500ml
Lugol Solution CB367300 240, 1000, 2500ml
Fast Differentiator (alcohol/acetone) CB361510 240, 1000, 2500ml
Slow Differentiator (alcohol based) CB363030 240, 1000, 2500ml
Safranin * CB361500 240, 1000, 2500ml
Ziehl Carbolic Fuchsin 1/10 * CB364540 240, 1000, 2500ml


Fast Acting May-Grünwald Giemsa

Quick Staining in only 15 seconds. Ready to use, no dilution, wide necked bottles. Limited oxidation and evaporation risks, no transfer necessary.

Other uses of Kit RAL: 555: Cytology of urines, biological liquids, cytopunctures and CRL, cytology of fixed and paraffined tissue sections, tissue protozoa, fungi contributing to deep mycosis, veterinary parasitology, etc.

Product Product Code Product Sizes
Kit RAL 555 CB361550 1 kit (3 x 100ml) tests 100-200 slides
Kit Reagents
FIX-RAL 555 CB362870 100, 1000, 2500ml
EOSIN-RAL 555 CB320300 100, 1000, 2500ml
BLUE-RAL 555 CB330370 100, 1000, 2500ml


Fluorescent Staining

Fluo-RAL kit offers a rapid method for the identification of mycobacteria or Acid Fast Bacilli (AFB).

AFB retain the Auramine after discolouration with acid and alcohol. The other non-acid-fast bacteria and cell elements are counter stained by Thiazine Red. Subsequently, mycobacteria appear yellow-green on a red background. In case of any suspicion, it is required to confirm results with traditional ZN staining.

Kit Fluo-RAL - number of tests possible: 150-200 slides.

Product Product Code Product Sizes
Kit Fluo-RAL CB359000 1 kit (2 x 250ml, 4 x 125ml)
Fixative Fluo-RAL CB362115 1000ml
Auramine Fluo-RAL CB362325 500ml
Carbolic Solution for Auramine Fluo-RAL CB362530 500ml
Degommier Discolouring Solution Fluo-RAL CB362210 1000ml
Thiazine Red Fluo-RAL CB362780 500ml
Carbolic Solution for Thiazine Red Fluo-RAL CB362610 500ml
Auramine Staining Kit RAL CB359500 1 kit (3 x 1000ml)
Carbolic Auramine CB361430 1000ml
Discolouring Solution CB362215 1000ml
Methylene Blue CB365340 1000ml


Hot Ziehl-Neelsen (ZN)

Quick Staining in only 15 seconds. Ready to use, no dilution, wide necked bottles. Limited oxidation and evaporation risks, no transfer necessary.

Other uses of Kit RAL: 555: Cytology of urines, biological liquids, cytopunctures and CRL, cytology of fixed and paraffined tissue sections, tissue protozoa, fungi contributing to deep mycosis, veterinary parasitology, etc.

Product Product Code Product Sizes
RAL ZN Staining Kit CB365400 1 kit (3 x 1000ml)
ZN Carbolic Fuchsin - included in kit 1000ml
ZN Acid-Alcohol 3% - included in kit 1000ml
ZN Methylene Blue 0.3% - included in kit 1000ml
Ziehl Carbolic Fuchsin CB362210 125, 500, 1000, 2500ml
Carbolic Methylene Blue CB362780 125, 1000, 2500ml


Ziehl-Armand

Using Armand solution enables both discolouration of all bacteria (except for mycobacteria) and colouration of the preparation background at the same time. Kit BK-Color number of tests: 125-200 slides.

Product Product Code Product Sizes
Kit BK-Color CB364600 1 kit (2 x 100ml)
Ziehl Carbolic Fuchsin CB320490 125, 500, 1000, 2500ml
Armand Solution CB360100 1000ml


Rapid Cold TB Staining

Using this kit prevents heating slides and breathing carbolic toxic fumes. This staining is quick and usable on all types of substrates (expectorates, cultures, etc.). Kit Quick TB, number of tests: 125-200 slides.

Product Product Code Product Sizes
Kit Quick TB CB361560 1 kit
Armand Solution CB360100 125, 1000ml
Carbolic Fuchsin CB365240 1000ml


Other Staining

Product Product Code Product Sizes
UriStain - Urine Sediment Stain CBZ74 15ml
Methylene Blue Stain CBZ88 15ml
Flagella Stain - for Bacterial Flagella staining CBZ87 15ml
Brilliant Green Counterstain CBBG008 250ml
AFB Brilliant Green Counterstain CB483KB 225ml x 3 (675ml)w