Hard-base shed cell collectors are specialized tools for forensic field collection of脱落上皮细胞, critical for DNA profiling from crime scene surfaces. Their rigid design addresses challenges of soft swabs, ensuring efficient cell recovery and sample integrity.
Core Design & Use
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Hard-Base Structure: Rigid plastic/metal base with textured sampling surface (e.g., micro-brush, adhesive pad) to scrape/lift cells from non-porous (glass, metal) and porous (fabric, wood) surfaces.
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Collection Process: Press base firmly against target area, move in circular motions; transfer collected cells to preservative tube or FTA card immediately post-collection.
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Contamination Control: Single-use, pre-sterilized; comes with sealed packaging and disposable gloves to prevent cross-contamination.
Key Features
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High Cell Yield: Rigid base enables better contact pressure, recovering 2–3x more cells than soft swabs.
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Surface Versatility: Works on uneven, curved, or rough surfaces where swabs fail.
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Field-Durable: Resistant to breakage in harsh crime scene environments (e.g., outdoor, wet conditions).
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Easy Handling: Lightweight, ergonomic grip for precise sampling in tight spaces.
Scope & Applications
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Crime Scene Investigation: Collecting cells from weapons, tools, clothing, door handles, and other evidence.
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Forensic Evidence Processing: Recovering trace cells from previously overlooked surfaces (e.g., vehicle interiors, furniture).
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Cold Case Reviews: Re-sampling old evidence with