The SMS-TW-01 is a field‑oriented explosive‑precursor screening kit engineered for rapid presumptive identification of common chemical components associated with improvised explosive devices. Built for bomb squads, law enforcement, customs, EOD teams and emergency responders, the kit emphasizes fast response, operator safety, traceable recording, and compatibility with laboratory confirmation workflows. Ruggedized for harsh environments, the SMS‑TW‑01 supports checkpoint screening, suspicious‑package assessment, and routine inspections where quick, conservative decisions are required to protect personnel and the public.
Key Technical Parameters (typical / nominal)
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Target analytes: Common explosive precursors and marker compounds (nitrates, nitrites, chlorates, perchlorates, common oxidizers and selected organic precursors) — presumptive indicators only (positives require lab confirmation).
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Detection mode: Colorimetric / reagent-based presumptive indicators with visual/readout confirmation; optional electronic reader interface for metadata logging.
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Detection limit (nominal): Low‑microgram trace sensitivity on swabs (typical minimal detectable surface loadings reported by manufacturer ranges; kit is optimized for trace residues rather than bulk quantitation).
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Response time: 10–120 seconds per reagent reaction (typical positive indicator within 30–90 s depending on compound and sample matrix).
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Sample types: Surface swabs, powders (trace), residue on packaging, wipe samples, and small liquid traces (reagents for liquid screening provided separately).
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Accuracy / specificity: Designed for high presumptive sensitivity; reagents prioritized to minimize false negatives. Users must confirm positives with laboratory GC/MS, LC/MS or other accredited methods.
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Readout: Clear colorimetric change with pass/fail interpretation; optional handheld reader outputs timestamped pass/fail and stores test ID and simple metadata (if reader enabled).
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Shelf life: 12–36 months depending on reagent; store per manufacturer label.
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Storage conditions: 5–25°C, dry, away from direct sunlight; do not freeze.
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Operating environment: −10°C to +50°C; relative humidity 10–90% non‑condensing.
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Kit weight & dimensions: Typical complete kit in rugged case ~2.0–4.5 kg; case footprint ≈ 370 × 260 × 120 mm (model dependent).
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Consumables per kit: 50–200 reagent tests (model/configuration dependent); swabs, pipettes, gloves, evidence bags included in standard packs.
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Power: Passive (manual colorimetric) or battery‑powered reader (if included) — common reader: rechargeable Li‑ion, 3–8 hours runtime.
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Certifications / compliance: Manufactured to applicable safety and transport regulations; intended for use by trained professionals and agencies.
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Data & traceability: Test ID, timestamp, operator ID and simple result metadata logged when reader used; compatible with evidence chain‑of‑custody paperwork.
Features / Benefits
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Rapid presumptive screening to prioritize samples for confirmatory testing.
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Rugged, portable case designed for field deployment and harsh conditions.
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Simple visual interpretation, plus optional electronic logging for audit trails.
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Low consumable footprint and long shelf life when stored correctly.
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Emphasis on operator safety: reagents packaged to minimize exposure; PPE guidance included.
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Complements — does not replace — accredited laboratory confirmatory analysis.
Scope / Applications
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Bomb squad and EOD preliminary screening.
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Law enforcement checkpoints, customs and border inspections.
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Emergency response to suspicious packages/incidents.
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Industrial safety audits where precursor chemicals are stored or transported.
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Training and operational readiness exercises (controlled conditions).
Safety & Usage Notes (summary)
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The SMS‑TW‑01 provides only presumptive results. Any positive/reactive result must be confirmed by accredited laboratory analysis before legal or forensic conclusions are drawn.
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Only trained personnel should operate the kit; follow supplied safety data sheets (SDS) and wear appropriate PPE.
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Do not attempt to handle, synthesize, or manipulate suspicious materials beyond safe sampling — follow agency protocols and local law.