BLAK-RAY ML-49 Longwave Ultraviolet Lamp (Fluorescent)

Circa Early 1980's to Early 2000's (ESTIMATED)

A highly versatile lighting tool because its 365 nm (longwave) UV light causes a wide array of organic and inorganic materials to fluoresce while emitting minimal visible "purple" light to interfere with the view.

Use Cases:

Law Enforcement & Forensics

In forensic science, 365 nm UV light is a critical non-destructive tool for uncovering evidence invisible to the naked eye.

• Biological Fluid Detection: Used at crime scenes to locate semen, saliva, and urine, which fluoresce naturally. While blood typically appears dark (absorbing UV), it can be made to fluoresce if treated with specific reagents like Luminol.

• Trace Evidence: Helps investigators spot hairs, fibers, and specialized "invisible" powders used to track stolen items or identify latent fingerprints.

• Document & Currency Authentication: Verifies security threads and UV-reactive inks in banknotes, passports, and IDs to detect forgeries or alterations.

• Narcotics & Chemical Detection: Certain controlled substances (like cocaine or amphetamines) and chemical accelerants used in arson have unique fluorescent signatures under 365 nm light.

Industrial & Sanitation

• Food Safety: Used by sanitarians to detect milkstone (calcium deposits) in dairy equipment, as well as rodent contamination (urine/droppings) and aflatoxins in grain.

• Leak Detection: Technicians add fluorescent dyes to HVAC systems, automotive engines, or plumbing to quickly pinpoint the source of a leak.

• Manufacturing QC: Reveals surface defects, cracks, or contaminants in metal parts and ensures uniform application of UV-curable adhesives and coatings.

Field Research & Hobbyist Use

• Mineralogy & Geology: Collectors use it to identify fluorescent minerals like calcite, fluorite, and willemite, which glow in brilliant, diagnostic colors.

• Art Restoration: Professionals use it to reveal hidden repairs, overpainting, or alterations on antiques and canvases that are not visible under standard lighting.

• Pest Control: Essential for identifying active rodent pathways and nesting areas by spotting urine trails.

(H-24cm x W-7.5cm x D-24cm)