Description

Giemsastain CAS NO 5181-82-6 is a high-purity, standardized biological stain essential for cytological and histological analysis. Its primary value lies in providing consistent, high-contrast differentiation of cellular structures, particularly chromatin and nuclear material, which is critical for accurate microscopic diagnosis. This product is indispensable for professionals in clinical diagnostics, academic research, and pharmaceutical development who require reliable staining for blood films, bone marrow aspirates, and chromosome banding studies. We ensure a consistent supply of this vital reagent to support global healthcare and life science research.

Application

• Hematological Diagnosis: Standard staining for peripheral blood smears and bone marrow aspirates to identify blood cell morphology and abnormalities.
• Cytogenetics: Essential for G-banding (Giemsa banding) techniques in chromosome analysis and karyotyping.
• Parasitology: Detection and identification of blood-borne parasites, including malaria (Plasmodium spp.), in thick and thin blood films.
• Histopathology: Used as a counterstain or primary stain in tissue sections to highlight nuclear detail.
• Microbiological Research: Staining of certain bacteria (e.g., Borrelia, Rickettsia) and inclusion bodies in cell cultures.
• Quality Control in Biologics: Monitoring cell culture health and identifying contaminants in biomanufacturing processes.

Basic Information

Product Name	Giemsastain
CAS No.	5181-82-6
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Giemsa Stain; Azure B-eosin; Azure B-eosin Y; Romanowsky-Giemsa Stain; Giemsa's Stain; Giemsa Solution; Modified Giemsa Stain; Eosin-Methylene Blue (Azure B variant)
EINECS	Contact for details

Quality Control

Our Giemsastain is manufactured under strict quality management systems to ensure batch-to-batch consistency and performance reliability for diagnostic and research applications. Each lot undergoes rigorous testing, including spectral analysis for dye composition, pH verification, and performance testing on standardized cell preparations. Certificates of Analysis (COA) documenting purity, composition, and functional performance are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). The product is light-sensitive and should be stored away from direct light exposure. Keep the container tightly sealed when not in use to prevent evaporation and contamination.

Specification

Item	Specification
Appearance	Dark blue to purple powder or ready-to-use solution
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0% (Total dye content)
Dye Composition	Meets defined ratio of Azure B, Eosin Y, and Methylene Blue
pH (of solution)	6.5 - 7.5
Solubility	Completely soluble in methanol/glycerol/water mixture
Performance	Produces characteristic nuclear and cytoplasmic staining on control slides

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