NeuronBC JWG-7A Laser Light Obscuration Particle Analyzer for Pharmaceutical and Medical Device Quality Control
| Brand | NeuronBC |
|---|---|
| Model | JWG-7A |
| Measurement Principle | Laser Light Obscuration (Single-Particle Counting) |
| Detection Range | 1–500 µm |
| Channel Configurations | ≥5 µm, ≥10 µm, ≥25 µm, 15–25 µm, 25–50 µm, 51–100 µm, >100 µm (user-definable up to 16 channels) |
| Minimum Sample Volume | ≥0.1 mL |
| Particle Count Capacity | 0–9,999,999 particles per sample |
| Concentration Range | 0–10,000 particles/mL |
| RSD | ≤2% (for NIST-traceable standard latex particles ≥1000 particles/mL) |
| Accuracy | ±5% of reference value |
| Channel Resolution | ≥95% (≥10 µm channel) |
| Sampling Time | <10 s for 5 mL |
| Stirring Speed | 0–2000 rpm (adjustable glass propeller stirrer) |
| Operating Temperature | 0–40 °C |
| Power Supply | AC 220 V ±10%, 50 Hz, ≤90 W |
| Dimensions | 390 × 350 × 470 mm |
| Compliance | GB 8368–2005, GB 8368–2018, GB 8368–1998 (Medical Devices & Pharmaceutical Packaging Materials), ISO 21501-4, USP <788> and <789> (with method validation), FDA 21 CFR Part 11-ready (JWG-7DS variant) |
Overview
The NeuronBC JWG-7A is a high-precision laser light obscuration particle analyzer engineered for regulatory-compliant particulate contamination testing in pharmaceutical manufacturing, medical device quality assurance, and parenteral product release laboratories. It operates on the ISO 21501-4–validated principle of single-particle optical sensing: as particles suspended in liquid pass through a focused laser beam, they transiently obscure the light path, generating voltage pulses proportional to their equivalent spherical diameter. The instrument converts these pulses into discrete size-channel counts with traceable metrology, supporting strict adherence to pharmacopoeial standards including USP , USP , EP 2.9.19, and Chinese Pharmacopoeia General Chapter 0903. Designed for routine QC workflows, the JWG-7A delivers reproducible results across diverse sample matrices—including aqueous injectables, sterile powders, oil-based formulations, organic solvents, and polymer leachates—without requiring dilution or electrolyte conditioning.
Key Features
- Laser light obscuration detection with NIST-traceable calibration and ≥95% channel resolution at ≥10 µm, ensuring metrological integrity per ISO 21501-4 Annex B.
- Modular high-pressure syringe pump sampling system (imported components) enabling precise volumetric delivery from 0.1 mL to 100 mL; supports high-viscosity samples (up to 500 cP) and maintains accuracy across altitudes (0–3000 m ASL).
- Chemically inert fluidic path constructed from ASTM F899-certified 316L stainless steel and PTFE-lined tubing, compatible with aggressive solvents (e.g., ethanol, acetone, dimethyl sulfoxide) and lipid emulsions.
- Programmable glass propeller stirrer (0–2000 rpm) with real-time speed feedback, minimizing sedimentation and ensuring homogeneous particle suspension during analysis.
- 10.1-inch capacitive touchscreen interface with multilingual OS support (English default), intuitive workflow navigation, and dual-mode operation: standalone mode or networked laboratory integration.
- Configurable multi-channel analysis (up to 16 user-defined thresholds) covering sub-micron to coarse particulates (1–500 µm), including specialized bins for 2–3 µm, 4–6 µm, and 15–25 µm critical for protein aggregate and wear debris assessment.
Sample Compatibility & Compliance
The JWG-7A accommodates a broad spectrum of regulated and non-regulated samples: IV solutions, lyophilized reconstituted products, prefilled syringes, infusion sets, dialysis membranes, ophthalmic suspensions, and drug-device combination products. Its solvent-resistant architecture permits direct analysis of non-aqueous systems without system degradation or carryover. Regulatory alignment includes full conformance with GB 8368 series standards (1998/2005/2018) for medical devices and packaging materials, as well as technical equivalence to USP particulate matter testing requirements when operated under validated conditions. For GMP environments, the optional JWG-7DS variant integrates audit trail functionality compliant with FDA 21 CFR Part 11, supporting electronic signature capture, user-level access control, and immutable data archiving.
Software & Data Management
The embedded operating system provides real-time channel-specific histograms, cumulative distribution plots, and pass/fail flagging against configurable acceptance criteria. Raw pulse data and metadata (sample ID, operator, timestamp, instrument parameters) are stored locally in encrypted SQLite format and exportable via USB or Ethernet to LIMS or ELN platforms. The optional NeuronBC ParticleSuite™ software (Windows-based) enables advanced statistical analysis—including trend charting, batch comparison, outlier detection using Grubbs’ test, and automated report generation aligned with ICH M7 and Q5C guidelines. All software modules undergo annual verification per ASTM E2500 and maintain version-controlled documentation for audit readiness.
Applications
- Final container testing of injectables per USP and Ph. Eur. 2.9.19.
- Filter integrity validation and challenge studies using polydisperse latex standards.
- Extractables and leachables screening in primary packaging (glass vials, rubber stoppers, plastic cartridges).
- Wear particle analysis in orthopedic implant simulators (e.g., CoCrMo debris in synovial fluid simulants).
- Stability-indicating monitoring of protein therapeutics for subvisible aggregate formation.
- QC release testing of hemodialysis solutions and irrigation fluids per ISO 8536-4.
FAQ
Does the JWG-7A require calibration with certified reference particles?
Yes—annual calibration using NIST-traceable polystyrene latex (PSL) standards (e.g., Duke Scientific 3000 series) is required to maintain compliance with ISO 21501-4 and pharmacopoeial mandates.
Can it analyze undiluted oil-based drug products?
Yes—the inert 316L/PTFE flow path and high-pressure pump enable direct measurement of oils, lipids, and silicone-based formulations without pre-treatment.
Is method transfer supported between JWG-7A and other light obscuration instruments?
Method equivalence protocols are provided in the IQ/OQ documentation package, facilitating cross-platform validation per ICH Q2(R2) principles.
What data security features are included for regulated labs?
The JWG-7DS variant offers role-based user authentication, electronic signatures, ALCOA+ compliant audit trails, and encrypted database backups meeting FDA 21 CFR Part 11 Subpart C requirements.
How is carryover addressed during high-concentration sample runs?
The system performs automated 3-cycle rinse with ultrapure water or compatible solvent between samples, with residual particle verification below 5 particles/mL per USP guidance.
