Eosin Y alcohol soluble 25g

Eriochrome Black T, 25g Sodium 1-[1-Hydroxynaphthylazo]-6-nitro-2-naphthol-4-sulfonate, Sodium 4-[2-(1-hydroxynaphthalen-2-yl)hydrazin-1-ylidene]-7-nitro-3-oxo-3,4-dihydronaphthalene-1-sulfonate C₂₀H₁₂N₃O₇SNa M.W: 461.381 g/mol Cas Number: 1787-61-7 https://pubchem.ncbi.nlm.nih.gov/compound/Eriochrome-black-t

Ερυθρό του Μεθυλίου 25g Methyl Red 25g C₁₅H₁₅N₃O₂ M.W: 269.304 g·mol⁻¹ CAS: 493-52-7 https://pubchem.ncbi.nlm.nih.gov/compound/Methyl-red