COMECAUSE IN-SCL Handheld Laser Particle Counter

Overview

The COMECAUSE IN-SCL Handheld Laser Particle Counter is an ISO 14644-1–compliant, portable aerosol monitoring instrument engineered for real-time quantification and size-resolved counting of airborne particulates in controlled environments. It operates on the principle of single-particle light scattering: a collimated semiconductor laser beam interrogates aerosol-laden air drawn through a precisely calibrated 2.83 L/min sampling nozzle; scattered photons are detected by a high-sensitivity photodiode array, with pulse height analysis enabling discrimination across six discrete size channels (0.3, 0.5, 1.0, 2.5, 5.0, and 10.0 µm). Designed for operational flexibility without compromising metrological integrity, the IN-SCL bridges the gap between fixed continuous monitoring systems and point-specific verification—delivering laboratory-grade particle concentration data (particles/m³ or particles/ft³) in dynamic, non-stationary settings such as cleanroom commissioning, personnel activity assessment, and localized contamination event response.

Key Features

• High-reliability semiconductor laser source with >35,000-hour operational lifespan, eliminating frequent lamp replacement and ensuring long-term measurement stability.
• Precision volumetric flow control system maintaining ±5% accuracy at nominal 2.83 L/min (0.1 ft³/min), certified per ISO 21501-4 and traceable to national standards.
• Multi-channel optical detection architecture supporting simultaneous enumeration across six standardized particle size bins, aligned with ISO 14644-1 classification requirements.
• Capacitive touch LCD interface displaying real-time bar-chart concentration trends, calculated UCL (Upper Confidence Limit) at 95%, instantaneous airflow rate, and dynamic ISO/GB洁净度等级 assignment.
• Integrated audit trail functionality compliant with FDA 21 CFR Part 11 and EU GMP Annex 1, recording user ID, timestamp, parameter changes, and data export events with immutable digital signatures.
• Dual-USB host interface enables direct connection to flash drives for field data offload and to PCs for firmware updates or configuration backup—no proprietary docking required.

Sample Compatibility & Compliance

The IN-SCL is validated for use with ambient indoor air, compressed gases (oil-free, non-corrosive), and filtered process air streams within specified environmental limits (0–40 °C, 10–75% RH). It excludes sampling of acidic, alkaline, or highly hygroscopic aerosols that may compromise optical path integrity. Regulatory alignment includes full conformance with Chinese national metrological verification regulation JJF 1190–2008 and standard GB/T 6167–2007, as well as international benchmarks: ISO 14644-1:2015 (cleanroom classification), ISO 209:2014 (cleanroom vocabulary), and ISO 21501-4:2018 (calibration of light-scattering airborne particle counters). For pharmaceutical applications, it supports EU GMP Annex 1 (2022) requirements for dynamic monitoring and risk-based sampling strategies, including viable/non-viable correlation protocols when paired with microbial samplers.

Software & Data Management

Data acquisition, storage, and reporting are governed by embedded firmware supporting automatic time-stamped logging of up to 100,000 sample records (including location ID, sampling duration, temperature/humidity, battery status, and operator credentials). All stored datasets include full metadata necessary for GLP/GMP-compliant review. Export options include CSV via USB mass storage mode and real-time thermal printing via integrated Bluetooth 5.0 connectivity. The device natively computes 95% UCL per ISO 14644-1 Annex D, eliminating post-processing dependencies. Remote diagnostics and configuration synchronization are supported over Wi-Fi using secure TLS-encrypted HTTP(S) endpoints compatible with enterprise IT infrastructure and centralized environmental monitoring systems (EMS).

Applications

• Cleanroom Qualification & Recertification: Conducting ISO 14644-1 Class 5–8 mapping per defined grid protocols, verifying unidirectional airflow uniformity, and validating FFU/bio-safety cabinet performance per ISO 14644-3.
• Operational Risk Assessment: Quantifying particle generation rates during gowning procedures, equipment maintenance, material transfer, and operator interventions—enabling evidence-based SOP refinement.
• Fault Isolation & Root Cause Analysis: Rapidly tracing elevated particle counts to specific sources (e.g., seal leakage, HEPA bypass, static discharge zones) following alarm events from fixed monitoring networks.
• Equipment Validation: Performing periodic testing of laminar flow workstations, isolators, and RABS per USP and PDA TR27 guidelines, with documented traceability to reference standards.
• Third-Party Auditing: Supporting accredited certification bodies in delivering auditable, timestamped reports compliant with ISO/IEC 17025 and national accreditation board requirements.

FAQ

Does the IN-SCL support calibration traceability to NIST or equivalent national standards?
Yes—each unit ships with a factory calibration certificate traceable to CNAS-accredited laboratories; optional annual recalibration services include full uncertainty budget documentation aligned with ISO/IEC 17025.

Can the device be used in explosive or hazardous atmospheres?
No—the IN-SCL is not intrinsically safe or ATEX-certified; it is intended exclusively for non-hazardous, general indoor environments meeting IEC 60529 IP20 enclosure rating.

Is remote firmware update capability available over Wi-Fi?
Yes—secure over-the-air (OTA) updates are supported via authenticated HTTPS endpoints, with rollback protection and version-controlled changelogs.

How is user access managed under multi-level security protocols?
The system implements role-based access control (RBAC) with three predefined tiers: Operator (data collection only), Supervisor (UCL calculation, report export), and Administrator (audit log review, calibration parameter adjustment, user provisioning).

What is the recommended interval for flow rate verification?
Per ISO 21501-4, volumetric flow accuracy shall be verified before each daily use or after any physical impact; built-in flow check mode provides immediate pass/fail feedback against programmed tolerance thresholds.