Author Archive: Guanliyuan

Dry Storage Tube: Mold-Resistant Evidence Preservation

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The biological evidence dry storage tube is designed for long-term preservation, featuring mold-resistant and contamination-free properties to safeguard forensic samples.

Core Content

  • Design: Polypropylene tube with airtight screw cap, built-in desiccant compartment, and mold-inhibiting inner lining.
  • Usage: Place dried biological evidence (swabs, hair, fibers) inside; activate desiccant; seal tightly; store at room temp.

Key Features

  • Mold-resistant: Inner lining and desiccant prevent moisture buildup, inhibiting mold growth for years.
  • Contamination-free: Airtight seal blocks external pollutants; sterile interior ensures sample purity.
  • Long-term stability: Preserves DNA/biological integrity for 5+ years under proper storage.
  • Traceable: Transparent tube body and writable label area support easy sample identification.

Application Scope

  • Forensic labs: Storing dried blood, saliva, or epithelial cell samples from crime scenes.
  • Cold case archives: Long-term preservation of historical biological evidence for future analysis.
  • Wildlife forensics: Safeguarding animal tissue or hair samples for species identification.

Cotton Swab Kit: Sterile Biological Evidence Extraction

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The cotton swab biological evidence extraction kit is a ready-to-use solution, featuring sterilized, individually packaged cotton swabs for safe forensic evidence collection.

Core Content

  • Kit Components: 50 sterile cotton swabs (individually foil-packaged), 10 sample preservation tubes, sterile gloves, and labeling sheets.
  • Usage: Tear open swab package, collect evidence (blood, saliva, debris), place swab in tube, seal and label for transport.

Key Features

  • Sterile & safe: Individually packaged swabs eliminate cross-contamination risks in crime scenes.
  • Ready-to-use: No pre-prep needed, saving time for urgent evidence collection.
  • Absorbent cotton: Effectively captures liquid and solid biological evidence traces.
  • Cost-effective: Bulk swab quantity meets multiple sampling needs in one kit.

Application Scope

  • Forensic crime scenes: Collecting bloodstains, saliva, or epithelial cells from weapons, clothing, surfaces.
  • Clinical sampling: Low-risk biological evidence collection for medical forensics.
  • Routine evidence checks: Law enforcement patrol kits for on-site preliminary sampling.

Dual-Tube Blood Set: On-Site Dry-Wet Collection

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The on-site blood collection set features red-blue dual tubes with dry-wet separation design, enabling organized, contamination-free blood sampling in field settings.

Core Content

  • Tube Design: Red dry tube (for clotting samples) and blue wet tube (with anticoagulant for whole blood); color-coded for quick identification.
  • Set Components: 2 dual tubes, sterile swabs, lancets, gauze, biohazard bag, and labeling cards; pre-assembled for ready use.

Key Features

  • Dry-wet separation: Prevents cross-contamination between clotted and whole blood samples.
  • Color-coded tubes: Red/blue distinction simplifies sample sorting and reduces mix-ups.
  • Field-ready: Compact packaging fits field kits; no lab equipment needed for initial collection.
  • Sample stability: Wet tube anticoagulant maintains blood integrity for 48+ hours at 2–8°C.

Application Scope

  • Forensic fieldwork: DUI checks, crime scenes requiring both serum and whole blood evidence.
  • Emergency response: On-site blood sampling for trauma patients or disaster victims.
  • Remote clinics: Rural areas needing simultaneous dry-wet blood sample collection for tests.

Micro-DNA Flocked Swab: Efficient Elution & Protection

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The micro-DNA collection flocked swab is a specialized tool for micro-scale DNA sampling, prioritizing efficient cell elution and sample protection for forensic and research use.

Core Content

  • Design: Ultra-fine 3D flocked nylon head (max cell capture) + thin, flexible shaft; compatible with microcentrifuge tubes.
  • Usage: Swab trace micro-DNA surfaces; immerse head in elution buffer; vortex briefly for high cell recovery; store at 2–8°C.

Key Features

  • High elution efficiency: Releases 90%+ captured cells, outperforming traditional cotton swabs for micro-samples.
  • Sample protection: Flocked structure minimizes cell damage during collection and elution.
  • Micro-scale focus: Ideal for low-volume samples like single-cell or trace touch DNA.
  • Sterile: Single-use packaging prevents cross-contamination in sensitive sampling.

Application Scope

  • Forensic micro-sampling: Trace DNA on small surfaces (jewelry, tool tips, electronic components).
  • Molecular research: Single-cell DNA collection or microbe sampling in lab experiments.
  • Clinical diagnostics: Low-volume biological samples for genetic testing or pathogen detection.

Disposable Blood Sampling Kit – Rapid On-Site Blood Collection

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The disposable blood sampling kit is a portable solution for rapid on-site blood collection, designed for efficient, safe specimen gathering in non-lab settings.

Core Content

  • Kit Components: Sterile vacutainers/lancets, alcohol swabs, gauze, bandages, biohazard bags, and labeling stickers.
  • Usage: Disinfect site, collect blood via venipuncture/capillary stick, secure sample, dispose of waste in biohazard bag.

Key Features

  • Rapid workflow: Pre-assembled tools cut preparation time for urgent on-site needs.
  • Single-use safety: Disposable components eliminate cross-contamination risks.
  • Portable: Compact packaging fits field bags for remote or emergency scenarios.
  • Compliant: Meets safety standards for clinical and forensic blood sampling.

Application Scope

  • Emergency response: On-site blood collection for trauma patients or disaster victims.
  • Forensic fieldwork: DUI checks, crime scenes requiring immediate blood evidence.
  • Remote clinics: Rural areas with limited lab access for patient blood testing.

Integrated Blood Card Kit: Safe DNA Sampling & Storage

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The integrated blood sample collection card kit is a all-in-one solution for safe DNA sampling and storage, combining collection cards with protective tools for forensic and clinical use.

Core Content

  • Kit Components: 5 DNA-preserving blood collection cards, sterile lancets, capillary tubes, desiccant packets, and tamper-evident storage envelopes.
  • Usage: Collect blood via lancet/capillary tube; spot on card; air-dry; seal with desiccant in envelope for storage.

Key Features

  • Integrated design: Combines sampling tools and storage to streamline workflow and reduce contamination.
  • Long-term storage: Cards preserve DNA for 10+ years at room temp when sealed with desiccant.
  • Safety-focused: Sterile components and blood-absorbent cards minimize exposure risks.
  • Traceable: Numbered cards and envelopes support chain-of-custody documentation.

Application Scope

  • Forensic investigations: Blood sample collection from crime scenes or suspects for DNA profiling.
  • Clinical genetics: Patient blood sampling for genetic testing and disease screening.
  • Disaster victim ID: Portable sampling for blood evidence in mass casualty events.

Soft-Base Collector: Forensic Microbial Sampling

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Soft-base shed cell collectors are forensic tools for microbial sampling on hard surfaces, using flexible bases to recover microbes while protecting surface integrity.

Core Content

  • Design: Flexible silicone base with micro-textured sampling pad + lightweight handle for easy maneuvering.
  • Usage: Press soft base on hard surfaces (glass, metal); swab gently in circles; transfer to microbial transport medium.

Key Features

  • Hard surface adaptability: Flexible base conforms to smooth/lightly textured hard surfaces for full contact.
  • Surface protection: Soft material avoids scratching delicate hard evidence (e.g., electronics, glass).
  • Microbe retention: Textured pad traps microbial cells without damaging their structure.
  • Sterile: Single-use packaging prevents cross-contamination in forensic sampling.

Application Scope

  • Crime scenes: Hard surfaces like windows, metal weapons, electronics for microbial evidence.
  • Biological threat cases: Sampling hard surfaces for harmful microbes in suspicious environments.
  • Forensic labs: Processing microbial samples from hard evidence for identification.

Hard-Base Shed Cell Collector: Forensic Trace Extraction

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Hard-base shed cell collectors are forensic tools for trace sample extraction, using rigid bases to recover cells from uneven/rough crime scene surfaces.

Core Content

  • Design: Sturdy plastic base with textured sampling surface + ergonomic grip for controlled pressure.
  • Usage: Press on target (tool grooves, wood); scrape linearly; transfer cells to collection tube.

Key Features

  • Uneven surface fit: Rigid base maintains contact where soft swabs struggle.
  • Targeted sampling: Accesses narrow crevices/textured materials precisely.
  • High retention: Textured surface traps trace cells for reliable DNA recovery.
  • Sterile: Single-use packaging prevents cross-contamination.

Application Scope

  • Crime scenes: Tools, wooden surfaces, textured metals for touch DNA.
  • Vehicle forensics: Tire treads, gear shifts, dashboard crevices.
  • Burglary cases: Door locks, window frames, broken glass edges.

10-Piece Shed Cell Collector Kit for Trace DNA Extraction

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The 10-piece shed cell collector kit is a comprehensive set for trace DNA extraction, equipping forensic teams with tools to recover shed cells from diverse crime scene surfaces.

Core Kit Content

  • Components: 5 flocked shed cell collectors, 3 hard-base scrapers, 2 sample preservation tubes, sterile gloves, and labeling sheets.
  • Usage: Select tool per surface; collect cells via swabbing/scraping; transfer to tubes; label and transport at 2–8°C.

Key Features

  • Comprehensive set: Combines 2 collector types to handle porous/non-porous, small/large surfaces.
  • High trace yield: Flocked collectors trap 40% more cells than standard swabs for low-level DNA.
  • Field-ready: Compact packaging, single-use sterile tools reduce contamination risks.
  • Cost-efficient: 10-piece set meets multiple sampling needs in one kit.

Application Scope

  • Crime scenes: Weapons, electronics, clothing, door handles for touch/epithelial DNA.
  • Cold cases: Re-sampling old evidence with varied tools to recover missed trace cells.
  • Forensic labs: Preparing trace samples for downstream DNA extraction and profiling.

Dual-Tube Field DNA Evidence Collection Kit

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The dual-tube on-site biological evidence kit is designed for field DNA sampling, with two separate tubes to collect and preserve evidence simultaneously for forensic analysis.

Core Content

  • Kit Configuration: 2 preservative tubes (lysis buffer/EDTA), flocked swabs, sterile gloves, moisture-proof bags, and chain-of-custody forms.
  • Usage: Swab evidence with dual swabs; place each swab in separate tubes; seal, label, and store at 2–8°C for transport.

Key Features

  • Dual-tube design: Enables duplicate sampling or separate collection of different evidence types to avoid cross-contamination.
  • Field-portable: Compact, lightweight case fits in field bags for remote crime scenes.
  • Long-term preservation: Preservative tubes maintain DNA integrity for 72+ hours in field conditions.
  • Forensic-compliant: Sterile components and documentation support court admissibility.

Application Scope

  • Crime scenes: Homicides, assaults, burglaries for blood, saliva, or touch DNA sampling.
  • Remote investigations: Rural or disaster areas with limited lab access.
  • Wildlife forensics: Sampling animal remains or evidence in field conservation cases.