GLOWORM Semen（365nm excitation）

GLOWORM Semen Stain Tracing Reagent

The current main method for searching for semen stains is the light source (blue light, ultraviolet) excited fluorescence method. This method has two defects. First, crime scene environments are often very complex, and under light source excitation, many substances emit fluorescence, causing effective semen stains to be missed or incorrectly identified. Second, when the amount of semen residue is very small or diluted, optical methods cannot detect trace amounts of semen at all, leading to the omission of key evidence.

The GLOWORM Semen Stain Tracing Reagent enables rapid screening and localization of potential semen stains at sexual assault crime scenes and in laboratories, eliminating interference from non-target stains and detecting trace amounts of semen. The reagent is ready to use directly from the bottle. Spray directly. Upon contact with a semen stain, it immediately produces fluorescent substances that emit bright light under 365nm UV light, targeting only semen stains. It is suitable for substrates such as underwear, fabrics, floors, furniture, sinks, leaves, grass, and gravel.

Demonstration Video: (Diluted semen stain smeared on paper)

Semen stain on underwear

Left: Under traditional blue light, a urine stain is faintly visible, but trace semen stains cannot be detected.

Right: After spraying the reagent and observing under UV light, the semen stain is easily revealed.

Semen stain on a toilet

Left: Under traditional blue light observation, there are many interfering stains, making it impossible to distinguish the semen stain.

Right: After spraying the reagent and observing under UV light, the semen stain location can be easily pinpointed.

Product Features:

• High sensitivity. Detects trace or diluted semen stains that cannot be found by traditional methods.

• High specificity. Reacts only with semen stains; does not react with other body fluids.

• Rapid reaction. Reacts immediately upon contact with semen stain; no waiting required.

• Easy to use. Ready to use directly from the bottle; simply spray.

• High and long-lasting brightness. High fluorescence intensity with persistent color development that does not fade, facilitating observation.

• Safe and environmentally friendly. Water-based solvent; safe for people and the environment.

• Does not damage DNA. Suitable for subsequent DNA analysis.

• Compatible light source. Excited by 365nm common long-wave ultraviolet light.