Coomassie Blue G250 Powder Features
Formulated for precise latent print development, the Coomassie Blue G250 Powder delivers exceptional biological enhancement. Used primarily as a protein stain, this high-purity dye binds selectively to blood-contaminated friction ridges on porous and non-porous surfaces. The compound produces a dark blue coloration that significantly increases visual contrast. Forensic professionals rely on this specific formulation to extract critical ridge detail from complex or faintly stained crime scene evidence.
Engineered for laboratory customization, the dry powder format allows technicians to formulate specific working solutions based on casework requirements. By dissolving the dye into appropriate carrier solvents like methanol and acetic acid, examiners can control the exact concentration of the stain. When integrated into standard operating procedures, this flexibility ensures court-admissible visual enhancements. The fine particulate structure dissolves efficiently into standard forensic solvent mixtures, minimizing preparation time.
To prevent sample degradation, the targeted evidence should ideally be pre-treated with a chemical fixative before applying the prepared dye solution. Maintaining strict control over the application and rinse processes keeps the active chromophores firmly attached to the targeted blood print. For optimal laboratory safety, preparation and mixing should always occur within a certified fume hood. Technicians must utilize appropriate personal protective equipment to prevent inhalation of the fine dust.
Available Sizes and Configurations
| SKU | Volume | Format |
|---|---|---|
| PF15019-25g | 25 g | Powder/Bottle |
Technical Specifications
| Specification | Detail |
|---|---|
| Product Type | Protein Stain Powder |
| Target Material | Blood-contaminated latent prints |
| Developed Color | Dark Blue |
| Application Phase | Primary enhancement (post-fixation) |
| Preparation Requirement | Must be dissolved in solvent prior to use |
Laboratory Applications
For rigorous forensic environments, integrating this protein dye is critical when processing evidence recovered from violent incident scenes. Crime scene investigators rely on this step when examining complex items like clothing, footwear, or textured flooring. Because it selectively adheres to the protein matrix of blood deposits, the solution is highly valuable when natural contrast is insufficient. Extracting usable intelligence requires a chemical dye that binds aggressively to biological material.
When processing blood evidence, the prepared working solution is typically applied via submersion or a controlled wash over the fixed print. Technicians gently rinse the item with a clearing solvent (like a methanol rinse) to remove excess background staining before air drying. Upon achieving the desired ridge contrast, the evidence is photographed under standard lighting conditions. This critical documentation step ensures the capture of the highest possible resolution of the print.
Forensic Reagent Comparison: Why Choose Rocky Mountain Reagents?
| Feature | Rocky Mountain Reagents Coomassie Blue G250 | Typical Competitor |
|---|---|---|
| Quality Control | High purity / COA available | Unverified purity |
| Format | Dry powder for custom mixing | Pre-mixed only |
| Pricing | Below retail pricing | Full retail |
| Ships From | USA inventory | Varies |
Academic and Institutional Pricing
LabSupplies.com offers tiered quantity pricing for academic and research institutions. As an authorized dealer, we ship directly from USA inventory.
Frequently Asked Questions
What is Coomassie Blue G250 Powder used for?
This specialized forensic dye is used to enhance latent fingerprints deposited in blood. Acting as a powerful protein stain, the Coomassie Blue G250 Powder produces a dark blue coloration that significantly increases the contrast of friction ridges against both porous and non-porous backgrounds for photographic documentation.
Does this powder need to be mixed with a solvent?
Yes, this product is supplied as a raw dry powder and must be dissolved into a compatible carrier solvent system before application. Technicians must follow validated laboratory protocols, typically involving a mixture of methanol, glacial acetic acid, and distilled water, to create the correct working solution strength.
What sizes are available for this reagent?
LabSupplies.com provides this raw protein stain powder in a convenient 25 g package. This configuration provides laboratories with ample raw material to mix numerous batches of working solutions, significantly reducing overall chemical costs while maximizing the shelf life of the unmixed dye.