The Nigrosine (CI 50420) Analytical Grade by Dinâmica, available at LojaLab, is a black dye primarily used in negative staining techniques for microscopy. In microbiological preparations, it colors the slide background rather than the cellular structure, increasing contrast for observation of morphology, capsules and microorganism outlines without relying on direct cell staining.
Characteristics
- Black synthetic dye identified by Color Index CI 50420
- Analytical grade with a Minimum assay: 99%
- Used to produce a dark background in negative staining techniques
- Supports visualization of microorganism shape, size and capsules
- May be included in eosin-nigrosin solutions for cell viability protocols.
Applications
- Preparation of negative staining solutions for bacteriology and microbiology
- Background contrast for observation of capsules and cell morphology
- Component of eosin-nigrosin methods for membrane-integrity assessment in compatible protocols
- Microscopy, cytology and quality control procedures specifying CI 50420.
Technical Specifications
- Product: Nigrosine Analytical Grade
- Brand: Dinâmica Química
- Color Index: CI 50420
- CAS number: 8005-03-6
- Assay: 99% minimum
- Color: black
- Available quantity: 10 g.
Technical Data
| Physical state | Solid |
| Color | Black |
| Dye identification | CI 50420 |
| Assay | 99% minimum |
Frequently Asked Questions
What is Nigrosine (CI 50420) Analytical Grade used for?
The main applications of Nigrosine (CI 50420) Analytical Grade include preparation of negative staining solutions for bacteriology and microbiology; background contrast for observation of capsules and cell morphology.
What are the main characteristics of Nigrosine (CI 50420) Analytical Grade?
The characteristics listed for Nigrosine (CI 50420) Analytical Grade include black synthetic dye identified by Color Index CI 50420; analytical grade with a Minimum assay: 99%.
How should Nigrosine (CI 50420) Analytical Grade be selected for a laboratory application?
Selection of Nigrosine (CI 50420) Analytical Grade should consider the grade, presentation, method requirements, and technical specifications described on this page.
What quantities of Nigrosine (CI 50420) Analytical Grade are available?
Nigrosine (CI 50420) Analytical Grade is available in 10 g. For other quantities, recurring purchases, or larger requirements, contact the sales team to check availability and request a quotation.
How can companies and institutions purchase Nigrosine (CI 50420) Analytical Grade and request a formal quotation?
Companies, laboratories, educational institutions, and research organizations can purchase Nigrosine (CI 50420) Analytical Grade directly from LojaLab. For recurring purchases, internal approval processes, research funding, public procurement, or formal quotation requirements, contact the sales team.
Professional Use and Safety Guidance
This product is intended for professional use in scientific research, laboratory analysis, education, and compatible industrial applications.
Each product has its own handling, storage, and disposal requirements. Before use, consult the corresponding SDS and follow the manufacturer's instructions and the safety procedures adopted by the institution.
LojaLab provides guidance on product selection and provenance; defining the use protocol and verifying suitability for the final application are the responsibility of the purchasing professional or institution.
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