Sirchie DNA-Free Fiberglass Fingerprint Brush 122

Forensic fingerprint brush

The Sirchie DNA-Free Fiberglass Fingerprint Brush 122 is a single-use tool designed for crime-scene investigators who must develop latent prints without introducing foreign DNA. Each unit is certified through third-party lot testing to confirm the complete absence of detectable DNA. The brush is sealed in a breathable pouch that protects the decontaminated fibres until the moment of use. It is intended for use with certified DNA-free fingerprint powders only.

Compatibility check

Verify that your latent-print kit contains powders explicitly labelled as DNA-free, as standard powders will compromise the brush’s certified status. Confirm that your evidence-handling protocol permits single-use brushes and that a breathable pouch fits your scene-kit storage layout. Ensure your team is trained to discard the brush after one scene to maintain chain-of-custody integrity.

Replaces reusable brushes

This model replaces traditional animal-hair or fiberglass brushes that are cleaned and reused between scenes, eliminating the residual-DNA risk that cleaning cannot fully remove. The jump is worth it when your laboratory accreditation or case law demands documented DNA-free consumables for every print-lifting operation. It is not suited for labs that rely on reusable brushes to reduce per-case consumable costs.