OG-EA31 Pap reagent

Product Description

One-step polychromatic reagent used as counterstain for gynecology samples in cytology. Enables rapid staining and differentiation between epithelial cells whose cytoplasm is stained green and pink. It is not necessary to use OG-6, Pap 2A reagent during staining because it stains cytoplasm of keratinized cell orange at the same time.

Available Options:


OG-EA31 Pap reagent is alcoholic polychromatic solution. The first step in using the Papanicolaou staining method implies nuclear staining with a hematoxylin solution, and next two steps consist of counterstaining using the monochromatic OG-6 reagent and one of the polychromatic EA reagent formulations. OG-EA31 Pap reagent does not require three, but two steps because it contains OG-6 and EA31 reagents. The Orange G molecule stains the cytoplasm, and in later stages of the procedure it remains only in the mature, keratinized cells. Polychromatic EA31 solution stains non-stained parts of cell, such as squamous cells, nucleoli, ciliary and erythrocytes. Test samples can be gynecological and non-gynecological, such as sputum, urine, and cytological puncture samples. In order to obtain optimal staining results, OG-EA31 Pap reagent has properties completely in compliance with other BioGnost’s reagents for cytological smearing acc. to Papanicolaou – Hematoxylin HP, Pap 1A reagent and Hematoxylin HP, Pap 1B reagent.

Technical Data

Trade name: OG-EA31 PAP REAGENT
Chemical name:
Catalogue number: OGEA31-OT-X**

Available volumes:
100 mL
500 mL
1 L
2,5 L

Storing, stability and expiry date:

Transport information:
Transporting/shipment by road (ADR) - UN1170, Ethanol solution, 3, II
Transporting/shipment by sea (IMDG) - UN1170, Ethanol solution, 3, II
Transporting/shipment by air (ICAO-TI/IATA-DGR) - UN1170, Ethanol solution, 3, II

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