Basic Red14

Basic Red 14

£35.00

Basic Red 14 Fluoresces

Basic Red 14 is a red dye that fluoresces under green light. The background staining is somewhat stronger than that of Basic Yellow 40.

Excitation is done with green light (around 530 nm.) The camera filter that is needed should pass light above around 590 nm (red.)

To make a working solution dissolve 1.5 gram [1] or 2 gram [3] Basic Red 14 in 1 litre of ethanol (or denatured ethanol.)

Our water based formula [2] is:

1.5 gram BR14
750 ml water
150 ml methyl ethyl ketone
100 ml isopropanol

SKU: TCS0359 Category:

Description

Basic Red 14 – High-Contrast Fluorescent Dye for Latent Prints
Our professional Basic Red 14 (BR14) provides a high-performance fluorescent staining solution for forensic evidence. Investigators primarily use this red dye to enhance latent fingerprints on non-porous surfaces. Because BR14 offers a distinct spectral profile, it serves as an excellent alternative to Basic Yellow 40 when background interference requires a different wavelength.

Superior Fluorescence and Visualisation

Basic Red 14 reacts effectively with cyanoacrylate-fumed prints to produce brilliant red luminescence. Although the background staining is somewhat stronger than that of other dyes, it provides exceptional contrast on specific substrates.
  • Excitation Wavelength: You should use a green light source, typically around 530 nm, to excite the treated evidence.
  • Forensic Photography: To capture the best ridge detail, your camera filter must pass light above 590 nm. Therefore, a red barrier filter ensures high-resolution results without light bleed.
  • Proven Standards: Our specifications follow established forensic guidelines. These include the HOSDB Newsletter (2007) and the Home Office Fingerprint Visualisation Manual (2014).
Professional Formulation and Mixing
We supply Basic Red 14 as a high-purity powder for custom laboratory preparation. You can choose between an ethanol-based or a water-based working solution depending on your specific evidence requirements.
  • Ethanol-Based Solution: Dissolve 1.5g to 2g of Basic Red 14 in 1 litre of ethanol or denatured ethanol.
  • Water-Based Formula: For a less volatile application, mix 1.5g of BR14 with 750ml of water, 150ml of methyl ethyl ketone, and 100ml of isopropanol.
  • Versatile Application: You can apply these solutions by dipping, spraying, or using a wash bottle to saturate the evidence thoroughly.
Safety and Laboratory Storage
Because Basic Red 14 is a concentrated dye, you must handle it with extreme care. Always prepare and use these solutions inside a fume hood. Furthermore, wear appropriate personal protective equipment (PPE) to prevent staining your skin or clothing. Store the dry powder in a cool, dark place to maintain its chemical integrity for future investigations. You can find other essential reagents by browsing our full collection of chemical enhancement products here.https://www.tetrasoc.com/product-category/chemical-enhancement/

References and footnotes

[1] HOSDB, Fingerprint and Footwear Forensics Newslettter, November 2007, Publication No. 59/07.
[2] Based on the Rhodamine 6G formulation described in the AFP Workshop Manual
[3] Fingerprint Visualisation Manual (CAST/Home Office 2014)

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