Charm novaLUM II-X Pesticide Residue Rapid Detection System
| Brand | Charm |
|---|---|
| Origin | Imported |
| Manufacturer Type | Authorized Distributor |
| Model | novaLUM II-X |
| Detection Method | Bioluminescence-based Assay for Organophosphates & Carbamates |
| Measurement Scope | Cereals & Oils, Vegetables, Fruits, Dairy Products |
| Intra-instrument Precision | CV ≤ 15% |
| Detection Time | ≤15 min (for target analytes) |
| Sensitivity | 100–1000× higher than conventional enzyme inhibition assays |
| Sample Preparation | Minimal—aqueous samples (e.g., milk, water) require no extraction or purification |
| Reagent Shelf Life | 12 months at 2–8 °C |
| Instrument Power | Rechargeable Li-ion battery (≥9 h continuous operation) |
| Data Interface | USB 2.0 + integrated Wi-Fi module for real-time data transmission and report export |
Overview
The Charm novaLUM II-X Pesticide Residue Rapid Detection System is a field-deployable, bioluminescence-based analytical platform engineered for the quantitative and semi-quantitative screening of organophosphate and carbamate pesticides—and their key metabolites—in food matrices. Unlike traditional colorimetric enzyme inhibition methods, the novaLUM II-X leverages a genetically engineered luciferase-luciferin reaction coupled with acetylcholinesterase (AChE) inhibition kinetics. When target anticholinesterase compounds are present in the sample extract, they inhibit AChE activity, thereby modulating the rate of light emission in a dose-dependent manner. This optical signal is captured by a high-gain photomultiplier tube (PMT), enabling detection at sub-parts-per-trillion (ppt) levels in select matrices. Designed for compliance with LS/T 6139–2020 (the People’s Republic of China Standard for Rapid Detection of Pesticide Residues in Grain and Oil Products), the system supports decentralized testing in grain elevators, dairy receiving bays, fresh produce distribution centers, and regulatory field laboratories.
Key Features
- Bioluminescent detection principle offering 100–1000× improved sensitivity over conventional Ellman-based enzyme inhibition assays
- Complete assay execution—including reagent dispensing, incubation, luminescence measurement, and result calculation—in ≤15 minutes per sample
- Integrated PMT detector with low-noise amplification circuitry, optimized for dynamic range linearity across 4 orders of magnitude
- Battery-powered architecture: rechargeable lithium-ion pack delivering ≥9 hours of continuous operation without AC input
- On-device digital display with intuitive icon-driven interface; results presented as inhibition percentage, concentration estimate (ppb), or pass/fail against configurable thresholds
- Minimal sample preparation protocol: liquid dairy and aqueous extracts require no centrifugation, filtration, or solvent cleanup prior to analysis
- USB 2.0 port and built-in IEEE 802.11 b/g/n Wi-Fi for encrypted data export to LIMS, ELN, or local PCs; supports timestamped audit trails
Sample Compatibility & Compliance
The novaLUM II-X is validated for use with homogenized or liquid food samples including raw milk, pasteurized skim milk, fruit juice extracts, leafy vegetable homogenates, rice flour slurries, and refined vegetable oils (post-dilution). Its performance has been independently verified by the Scientific Research Institute of the National Administration of Grain and Strategic Reserves (China), confirming alignment with LS/T 6139–2020 for intra-laboratory precision (CV ≤15%) and limit-of-detection (LOD) requirements. While not certified under ISO/IEC 17025 for accredited testing, the system meets functional criteria for screening-level compliance in HACCP-based food safety programs and fulfills preliminary assessment requirements under China’s GB 2763–2021 Maximum Residue Limits (MRLs) framework. Reagents are supplied lyophilized in single-use vials, with stability confirmed for 12 months when stored at 2–8 °C.
Software & Data Management
The instrument runs embedded firmware v3.2.x supporting GLP-compliant data handling. Each test record includes instrument ID, operator ID (PIN-authenticated), sample ID, timestamp (with NTP synchronization via Wi-Fi), raw RLU (relative light units), calculated % inhibition, and final classification. Data exports are generated in CSV and PDF formats, both containing digital signatures and checksums to prevent tampering. The optional CharmLink Desktop Suite enables batch report generation, trend analysis across time-series datasets, and integration with third-party SQL-based LIMS via ODBC drivers. All electronic records comply with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available) and support retrospective review during internal audits or regulatory inspections.
Applications
- Routine incoming inspection of raw milk at dairy processing plants to screen for diazinon, chlorpyrifos, carbaryl, and aldicarb residues
- Pre-harvest monitoring of leafy greens and tomatoes at packinghouses using on-site rapid triage before cold chain dispatch
- Verification testing of rice, wheat, and soybean shipments at national grain reserve depots per LS/T 6139–2020 protocols
- Surveillance sampling in municipal food safety supervision programs targeting high-risk produce markets
- Method transfer and capacity building in regional laboratories lacking access to LC-MS/MS infrastructure
FAQ
What regulatory standards does the novaLUM II-X meet?
It conforms to LS/T 6139–2020 for rapid pesticide residue screening in grain and oil products and supports verification workflows aligned with GB 2763–2021 MRL enforcement thresholds.
Can the system quantify specific pesticide compounds?
No—it provides class-specific semi-quantitative results (organophosphates + carbamates collectively); compound identification requires confirmatory analysis by GC-MS or LC-MS/MS.
Is calibration required before each use?
The system performs automatic dark-current and gain calibration at startup; no user-performed calibration is needed between assays.
How is data integrity ensured during wireless transmission?
Wi-Fi data packets are encrypted using TLS 1.2; all exported files contain SHA-256 hash values and embedded metadata for forensic traceability.
Are reagents compatible with other Charm instruments?
novaLUM II-X uses proprietary lyophilized AChE/bioluminescent reagent kits (catalog #NL-II-X-KIT); they are not interchangeable with Charm ROSA or ELISA platforms.
