XX pigment is a compound dye composed of acidic dye Eosin and basic dye Methylene Blue, which has a good differentiation effect on the staining of protoplasm.XXX stain is made from the mixture of asphaltene II and Eosin, the staining principle and result is basically the same with XX staining method, XXX stain has a stronger coloring power on the cytoplasm, and it can show the degree of alkalophilicity of the cytoplasm better, especially on the blood and bone marrow cells, the coloring is clear, but it has a darker coloring on the nucleus, and it is often used with XXX stain, therefore, it has poor coloring on the nuclear structure. Especially for blood and bone marrow cells in the cyanophilic, acidophilic and basophilic particles, the coloring is clear, but the coloring of the cell nucleus is deep, the nuclear structure is not good, often with the XXX Staining Solution is often used in conjunction with the XX Staining Solution.

XX-XXX Staining Solution is made of imported XX pigment and XXX pigment as the main raw material, which is prepared by grinding, and it can show clear cell staining effect, and it is often used for blood and cell smear, bone marrow cell smear and bacterial staining; the cytoplasm of the cells is red, the nucleus of the cells and the bacteria are blue, and the eosinophilic particles are orange-red; neutral glycerol is added in the staining solution, which can prevent the methanol from evaporating or oxidizing, and it can make the blood cells staining clearer, and this staining solution can be used in combination with XX staining solution. The staining solution is characterized by XX-MMSA staining solution and phosphate buffer, mixed in equal amounts or used separately for specimen processing.