Ruixin SPb-JC2 Methanol Analyzer
| Brand | Ruixin |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | SPb-JC2 |
| Price | USD 790 (FOB Shanghai) |
| Functionality | Single-Analyte Detection |
| Sample Format | Single-Sample Dedicated |
| Wavelength | 540 nm |
| Assay Time | ≤ 180 s |
| Photometric Repeatability | ≤ 0.2% |
| Optical Channels | 1 |
Overview
The Ruixin SPb-JC2 Methanol Analyzer is a portable, single-wavelength photometric analyzer engineered for rapid, field-deployable quantification of methanol concentration in alcoholic beverages and food-grade ethanol solutions. It operates on the principle of absorbance-based colorimetric detection at 540 nm, where methanol—after enzymatic oxidation and chromogenic reaction—generates a stable colored complex proportional to its concentration. The instrument implements fixed-wavelength spectrophotometry with integrated optical self-calibration, eliminating manual zeroing and 100% transmittance adjustment prior to measurement. Designed for regulatory compliance workflows, it supports traceable analysis in mobile inspection units, municipal food safety laboratories, and frontline enforcement environments—including market supervision vehicles, CDC field stations, and third-party testing centers.
Key Features
- Portable architecture with built-in rechargeable lithium battery (operational autonomy ≥ 8 h), enabling continuous field use without external power.
- 4.3-inch high-resolution color TFT touchscreen with full Chinese GUI; supports direct Chinese character input via on-screen keyboard or stylus for unambiguous sample annotation.
- Embedded thermal printer delivering compliant analytical reports per test channel—automatically including analyte concentration (g/100 mL), Chinese sample name, date/time stamp, operator ID, and institutional affiliation.
- Self-calibrating optical path system: performs automatic baseline correction and dark-current compensation at startup, ensuring photometric stability across environmental fluctuations.
- Dual-mode display: simultaneous real-time readout of absorbance (A, range 0.000–4.000, resolution 0.001) and transmittance (%T, range 0.00–100.00%, resolution 0.01%).
- Photometric performance validated per ISO 7027-1:2016 principles: transmittance accuracy ±2.0%, repeatability ≤0.2% (n=10, same sample), and drift ≤0.3% over 3 minutes.
- Onboard data management: automatic storage of ≥ 1,000 test records with timestamped metadata; recallable via intuitive menu navigation.
Sample Compatibility & Compliance
The SPb-JC2 is optimized for liquid samples requiring pre-treatment per GB 5009.266–2016 (National Food Safety Standard for Determination of Methanol in Alcoholic Beverages). Compatible matrices include distilled spirits, fermented liquors, and denatured ethanol solutions. Sample volume requirement: 1.0 mL per assay. The analyzer meets core functional requirements of China’s SAMR “Food Safety Rapid Detection Technical Specifications” (Announcement No. 22 of 2021) and aligns with AOAC Official Method 2012.01 for alcohol matrix interference mitigation. While not certified under FDA 21 CFR Part 11, its audit trail functionality (timestamped records, operator ID logging, and immutable result storage) supports GLP-aligned documentation practices in contract testing labs.
Software & Data Management
Data export and remote monitoring are enabled via dual communication interfaces: RS-232 (for legacy lab network integration) and USB 2.0 (for direct PC transfer or firmware updates). The device supports CSV-formatted output compatible with LIMS platforms and internal QA databases. All stored results retain full metadata—no post-hoc editing permitted. Optional cloud synchronization (via optional gateway module) allows real-time transmission to centralized food safety surveillance networks, satisfying provincial-level “Smart Food Supervision Platform” interoperability standards.
Applications
- Routine screening of methanol adulteration in locally produced baijiu, huangjiu, and fruit wines at county-level market regulation checkpoints.
- Emergency response testing during foodborne illness investigations involving suspected methanol poisoning outbreaks.
- Quality control verification in small-scale distilleries lacking access to HPLC infrastructure.
- Training and capacity-building for grassroots food safety officers under national “Rural Food Safety Improvement Program” initiatives.
- Complementary use alongside multi-analyte rapid testers (e.g., pesticide residue, sulfite, formaldehyde) within standardized food safety detection kits.
FAQ
What is the detection limit and linear range for methanol?
The method detection limit is 0.02 g/100 mL, with a linear dynamic range from 0.00 to 0.20 g/100 mL (R² ≥ 0.999 under controlled conditions).
Does the instrument require external calibration standards before each use?
No—optical self-calibration occurs automatically at power-on; only reagent blank validation is required prior to batch analysis.
Can the SPb-JC2 be used for quantitative analysis of other analytes?
It is configured exclusively for methanol per GB 5009.266–2016; wavelength and algorithm are fixed and non-programmable.
Is the thermal printer paper included with the unit?
Yes—each unit ships with one roll of 57 mm thermal paper (50 m length) and a spare print head cleaning kit.
What power sources are supported?
Three options: internal Li-ion battery (5 V / 4,000 mAh), AC adapter (100–240 V, 50/60 Hz), or external 5 V DC supply via micro-USB port.
