Blue has a wavelength of around 480 nm and will make your sample visible. If your sample is too concentrated you can dissolve it in water.
The volume (ml) in milliliters of buffered % w/v solutions at the medium pH are also used for DNA extraction Organic (Phenol-Chloroform) Extraction, Non-Organic (Proteinase K and Salting out), Chelex (Ion Exchange Resin) Extraction, EDTA or PBS aqueous.
Giemsa’s Stain (AZUR-eosin-methylene soln.)
Giemsa’s staining solution (AZUR-eosin-methylene blue soln.)