Hematoxylin and eosin combined staining is referred to as HE staining, is the most basic staining method in the routine preparation of pathology, and is extremely widely used. Hematoxylin is a light yellowish-brown crystal extracted from the foreign hemlock tree native to Central and South America, and is an alkaline stain, which produces hematoxylin when oxidized, and is used together with mordant (commonly trivalent aluminum or ferric salts) to enable staining of the cell nuclei. Together with a mordant (usually trivalent aluminum or iron salts), it can stain the nucleus of cells. In pathological diagnosis, teaching and scientific research work, commonly used HE staining of normal and diseased tissues for morphological and structural observation, can determine or identify some abnormal substances and special components in diseased tissues, cells, and need to use special staining methods, enzyme histochemistry, immunohistochemistry, etc. are also in the observation of HE staining of tissue slices on the basis of the tissue sections in HE staining. In the HE-stained tissue sections, the cell nuclei are blue and the cell plasma is red, which form a sharp contrast and are easy to observe and analyze.

Hematoxylin Eosin Staining Solution is composed of imported high-purity hematoxylin, oxidizing agent, etc. It does not contain oxidized mercury, methanol and other harmful substances, and has a good effect on staining of cell nuclei, which is characterized by the fact that it is not easy to produce precipitation and metal film; it has a wide range of applications, which can be used in the fields of human beings, animals, animal husbandry and aquaculture, and it can be used for staining of paraffin sections of tissues, frozen sections of tissues and tissues, etc. Hematoxylin Staining Solution and Eosin Staining Solution can be reused. Hematoxylin staining solution and eosin staining solution can be reused.