Description

Wright'S Stain is a polychromatic Romanowsky-type stain composed of methylene blue and eosin derivatives, widely used in hematology and cytology. Its primary value lies in its ability to provide excellent differential staining of blood cells, allowing for clear visualization of cellular morphology and identification of various blood cell types. This stain is an essential diagnostic reagent for clinical laboratories, research institutions, and pharmaceutical companies involved in hematological analysis, disease diagnosis, and biomedical research.

Application

• Hematology and Clinical Diagnostics: Standard staining for peripheral blood smears and bone marrow aspirates to differentiate leukocytes (white blood cells), erythrocytes (red blood cells), and platelets for manual microscopy.
• Parasitology: Detection and identification of blood-borne parasites, most notably for the diagnosis of malaria (*Plasmodium* species) in thick and thin blood films.
• Veterinary Medicine: Examination of animal blood samples for veterinary diagnostics and research purposes.
• Cytology and Histology: Staining of cytological preparations from various bodily fluids and fine-needle aspirates.
• Biomedical Research: Used in research laboratories for in-vitro studies involving blood cells, cell cultures, and other biological specimens requiring morphological assessment.
• Quality Control in Manufacturing: Employed in the quality assurance processes for related diagnostic kits and reagents.

Basic Information

Product Name	Wright'S Stain
CAS No.	68988-92-1
Molecular Formula	Mixture
Molecular Weight	N/A (Mixture)
Synonyms	Wright's Blood Stain; Wright Stain; Wright's Solution; Romanowsky-Wright Stain; Wright-Giemsa Stain; Eosin-Methylene Blue; Polychrome Methylene Blue-Eosin; CI 59010 (related)
EINECS	Contact for details

Quality Control

Our Wright'S Stain is manufactured under strict quality control protocols to ensure batch-to-batch consistency and performance reliability for diagnostic applications. Each lot is tested for staining performance, pH, solubility, and absence of precipitates to meet the functional requirements for clinical hematology. A comprehensive Certificate of Analysis (COA) detailing all quality parameters is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store at a controlled room temperature between 15°C and 25°C (59°F and 77°F). Keep the container tightly sealed when not in use to prevent evaporation of solvents and absorption of moisture, which can affect staining performance.

Specification

Item	Specification
Appearance	Dark blue to purple powder or ready-to-use solution
Identification (IR/Spectrophotometry)	Conforms to standard
Solubility (in Methanol)	Completely soluble, yielding a clear, deep purple solution
Staining Performance	Produces characteristic differential staining of leukocyte granules and nuclei on control blood smears
pH (of prepared solution)	6.5 - 7.5
Moisture Content (for powder)	< 5.0%
Heavy Metals (as Pb)	< 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.