Papanicolaou's solution 2a Orange G (OG 6), Sigma-Aldrich®

Supplier: Merck
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1.06888.1000EA 70.4 GBP
1.06888.1000 1.06888.1022 1.06888.0000 1.06888.0500 1.06888.2500 1.06888.9025
Papanicolaou's solution 2a Orange G (OG 6), Sigma-Aldrich®
Papanicolaou's staining solution Orange G (OG 6)

Cytoplasm staining of mature and keratinized cells in cytology


The effect of the orange staining solution is considerable in smears with keratinized cells under acidic pH conditions, when the obvious orangeophilic cytoplasmic stain is recognizable and may point to the presence of hyperkeratosis, HPV infection or carcinoma cells. Papanicolaou's solution 2a, Orange G solution gives a gentle yellow-orange staining result with mature and keratinized squamous cells. Papanicolaou's solution 2b, Orange II solution gives a intense reddish staining result with mature and keratinized squamous cells. A 500 ml bottle is sufficient for 1500 to 2000 stainings.

Density: 0.83 g/cm³ (20 °C)
Flash Pt: 14 °C
UN: 1170
ADR: 3,II
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Specification Test Results

Suitability for microscopy (vaginal smear) Passes test
Nuclei Blue to dark violet
Cyanophilic cytoplasm Blue-green
Eosinophilic cytoplasm Pink

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