Acid Fuchsin Forensic Reagent Features
Pioneer Forensics Acid Fuchsin is a colorimetric protein forensic reagent (item PF30110) that reacts with proteinaceous material in bloodstains to produce a deep magenta coloration visible under standard white light. Applied to porous surfaces including textiles, paper, unsealed wood, and drywall, staining concentrates along bloodstain boundaries and ridge detail, defining edges and directionality for documentation. No forensic light source, darkened environment, or barrier filters are required — results are photographed under standard conditions and the staining is permanent.
For examiners where chemiluminescent or fluorescent enhancement is impractical, Acid Fuchsin provides a straightforward visible-color pathway. Its protein-binding mechanism is non-specific — reacting with blood and other protein-containing biological materials — making it a presumptive enhancement tool paired with confirmatory serological or DNA analysis. Available in 1L amber poly and 500mL poly bottles from Pioneer Forensics, an FDA-registered, ISO 9001:2015 certified supplier in Golden, Colorado.
Technical Specifications
| Specification | Detail |
|---|---|
| Manufacturer | Pioneer Forensics |
| Item # | PF30110 |
| Form | Liquid reagent |
| Sizes Available | 1L — $38.00 | 500mL — $30.00 |
| Packaging | Amber poly (1L) / Poly (500mL) |
| Reagent Class | Colorimetric protein stain |
| Mechanism | Reacts with protein components in blood and bodily fluids |
| Color Produced | Deep magenta / reddish-purple |
| Target Evidence | Bloodstain patterns on porous surfaces |
| Surfaces | Textiles, paper, unsealed wood, drywall |
| Fluorescence | None — visual (non-fluorescent) enhancement only |
| Blood Specificity | Not exclusive to blood — general protein affinity |
| Manufacturer | Pioneer Forensics / Rocky Mountain Reagents, Golden CO |
Forensic Applications
To enhance faint or diluted bloodstain patterns on porous evidence, Acid Fuchsin is applied in crime scene and laboratory examinations involving blood pattern documentation on textiles, paper documents, drywall, and unsealed wood. High visual contrast on light backgrounds supports blood pattern analysis, directionality interpretation, and standard-light photography. In cases where luminol-based enhancement has been performed, Acid Fuchsin can serve as a follow-up visible stain for permanent marking of enhanced areas.
Acid Fuchsin vs. Chemiluminescent Blood Enhancement
| Feature | Acid Fuchsin | Luminol / Chemiluminescent |
|---|---|---|
| Detection Type | Colorimetric — visible color change | Chemiluminescent — requires darkness |
| Light Required | Standard visible light | Dark environment required |
| Photography | Standard photography conditions | Long-exposure photography required |
| Surface Type | Porous — textiles, paper, wood, drywall | Works on most surfaces |
| Blood Specificity | General protein stain | Luminol more blood-specific |
| Fluorescence | None | Chemiluminescent only |
| Use Case | When darkness or UV is impractical | Large-area enhancement in darkness |
| Pricing | Below retail pricing | Full retail |
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 surfaces is Acid Fuchsin Reagent designed for?
Acid Fuchsin is formulated for porous and absorbent surfaces where bloodstain patterns may be difficult to visualize — textiles, paper, unsealed wood, and drywall. Protein-binding chemistry concentrates the deep magenta coloration along bloodstain boundaries and ridge detail, defining edges and directionality for pattern documentation. Acid Fuchsin is less effective on nonporous surfaces such as glass or sealed flooring where protein absorption into the substrate does not occur.
How does Acid Fuchsin differ from fluorescent bloodstain enhancement methods?
Acid Fuchsin produces a visible deep magenta color reaction observable and photographable under standard white light — no forensic light source, darkened room, or barrier filters required. Fluorescent methods such as Acid Yellow 7 require a 415–485nm ALS and appropriate barrier filters. Acid Fuchsin suits examinations under ambient light conditions or when photography equipment lacks forensic light capability.
Is Acid Fuchsin specific to blood?
No. Acid Fuchsin is a general protein stain — it reacts with blood, other protein-containing bodily fluids, and any proteinaceous material present on evidence. Positive staining should be followed by confirmatory serological or DNA analysis to establish the stained material is human blood. Non-specific reactivity is consistent with other protein stains used in forensic enhancement workflows.
When should Acid Fuchsin be chosen over luminol-based enhancement?
Acid Fuchsin suits cases where the environment cannot be darkened for chemiluminescent photography, where evidence is on porous surfaces that may reduce luminol sensitivity, where a permanent visible stain is preferred over a transient chemiluminescent reaction, or where prior reagent treatment may interfere with luminol's iron-catalyzed chemistry. Its deep magenta staining is permanent and photographable under standard conditions.
Pioneer Forensics Bloodstain Enhancement Reagent Line
Acid Fuchsin is part of Pioneer Forensics' bloodstain enhancement catalog at LabSupplies.com. For fluorescent blood enhancement, Acid Yellow 7 (PF30046) produces bright yellow fluorescence under 415–485nm excitation. For blood-contaminated latent fingerprints and footwear impressions, the Amido Black series (aqueous PF30008, methanol-base PF30004, powder PF15010) provides blue-black protein staining on porous and nonporous substrates.