Bohui Innovation BH7100S Flame Atomic Absorption Spectrometer
| Brand | Bohui Innovation |
|---|---|
| Origin | Beijing, China |
| Model | BH7100S |
| Analysis Method | Flame Atomic Absorption Spectrometry (FAAS) |
| Simultaneous Multi-Element Capability | Cu, Zn, Ca, Mg, Fe, K, Na (7 elements) |
| Atomizer | Premixed 100 mm single-slit titanium burner |
| Absorbance Range | 0–2 Abs |
| Wavelength Range | 190–650 nm |
| Spectral Bandwidth | 0.15–2.0 nm |
| Light Sources | Cu/Zn/Ca, K/Na, and Mg/Fe composite hollow cathode lamps |
| Baseline Stability (30 min, unignited) | ≤0.005 Abs (Cu, Zn, Ca, Mg, Fe) |
| Characteristic Concentrations (mg/L/1%) | Cu ≤0.035, Zn ≤0.015, Ca ≤0.080, Mg ≤0.040, Fe ≤1.05, K ≤6.0, Na ≤5.0 |
| Precision (Abs > 0.1) | ≤3.0% |
| Nebulizer Chamber | PTFE-lined with optimized taper and rear drainage |
| Safety Systems | Acetylene flashback arrestor, solenoid valve cutoff (power loss/low air pressure), burner explosion-proof design, dual pressure & flow monitoring |
| Power Supply | AC 220 ± 22 V, 50 ± 1 Hz, 300 VA |
| Dimensions | 782 × 560 × 338 mm |
| Operating Environment | 10–30 °C, RH ≤70%, atmospheric pressure 0.070–0.106 MPa, vibration-free, corrosion- and EMI-free |
Overview
The Bohui Innovation BH7100S Flame Atomic Absorption Spectrometer is a clinical-grade, multi-element quantitative analyzer engineered for rapid, reliable elemental profiling in whole blood specimens. Designed specifically for medical laboratories operating under ISO 15189 and CLIA-aligned quality frameworks, the BH7100S implements flame atomic absorption spectrometry (FAAS) — a well-established, reference-method-compliant technique where analyte atoms are thermally atomized in an air-acetylene flame, then quantified via selective absorption of element-specific radiation from hollow cathode lamps. Its core clinical utility lies in trace and major element assessment (Cu, Zn, Ca, Mg, Fe, K, Na) from just 40 µL of unprocessed whole blood, delivering results within 4 seconds per sample. Unlike conventional sequential FAAS systems, the BH7100S achieves true simultaneous measurement through its patented multi-channel angular optical configuration (Patent No. ZL 01 2 19460.3), eliminating lamp-switching delays and reducing operator-induced variability — critical for high-throughput clinical labs requiring strict inter-day reproducibility.
Key Features
- Patented Multi-Channel Angular Optical Architecture: Three composite hollow cathode lamps (Cu/Zn/Ca; K/Na; Mg/Fe) operate in time-multiplexed mode, with precisely angled beam paths to prevent spectral overlap and inter-element interference — especially vital for adjacent lines such as K (766.5 nm) and Ca (769.9 nm). Each channel’s optical path length is independently optimized to ensure all seven elements are measured on their primary sensitivity lines, maximizing signal-to-noise ratio and analytical robustness.
- Titanium Premixed Burner System: A 100 mm single-slit titanium burner provides exceptional thermal stability, oxidation resistance, and rapid thermal equilibrium (<60 s), ensuring consistent atomization efficiency across repeated runs and minimizing drift during extended batch analysis.
- High-Efficiency PTFE Nebulization Chamber: Featuring a tapered internal geometry, rear-drain design, and surface-modified hydrophilic lining, the chamber minimizes memory effects and ensures pulse-free waste discharge. The corrosion-resistant PTFE construction supports long-term use with acidic or saline biological matrices without degradation.
- Integrated Safety-by-Design Framework: Compliant with IEC 61010-1 (Overvoltage Category II), the system includes redundant safety layers: acetylene flashback arrestors, solenoid-driven fuel cutoff triggered by power failure or sub-threshold air pressure, mechanical burner explosion relief, and real-time dual-parameter (pressure + flow) gas monitoring.
- Optimized Light Source Configuration: Use of composite lamps reduces lamp inventory, extends operational lifetime (>5,000 mA·h typical), and avoids intensity imbalance caused by multi-element doping in single-lamp designs — a known source of calibration drift in legacy instruments.
Sample Compatibility & Compliance
The BH7100S accepts native whole blood (EDTA-K₂ anticoagulated), serum, and plasma without dilution or digestion — validated per manufacturer protocols and aligned with CLSI C38-A2 guidelines for elemental analysis in clinical specimens. It meets essential requirements for GLP-compliant operation, including audit-trail-enabled data logging (user ID, timestamp, method version, raw absorbance values, calibration history) and secure result archiving. While not FDA 510(k)-cleared for standalone IVD use in the U.S., the instrument conforms to GB/T 21474–2008 (Chinese national standard for clinical AAS instruments) and supports compliance with ISO/IEC 17025:2017 clause 7.2.2 (method validation) when deployed within accredited laboratory quality systems.
Software & Data Management
The proprietary Windows-based control software provides full instrument automation: automatic wavelength selection, slit width adjustment, lamp current optimization, background correction (D₂), and integrated calibration curve generation (linear and quadratic). All measurements are tagged with metadata (sample ID, operator, date/time, QC lot numbers) and stored in encrypted SQLite databases compliant with ALCOA+ principles. Export formats include CSV, PDF (with embedded chromatogram-style absorbance traces), and XML for LIS/HIS integration. Audit trails record every parameter change, result modification, or user login — satisfying 21 CFR Part 11 readiness requirements when paired with institutional electronic signature policies.
Applications
Primary applications include nutritional status assessment (e.g., Zn/Cu ratio in chronic disease), metabolic bone disorder screening (Ca/Mg/Fe profiles), electrolyte imbalance evaluation (K/Na), and pediatric micronutrient monitoring. The system is routinely deployed in hospital central labs, regional public health institutes, and clinical research units conducting epidemiological studies on trace element deficiencies. Its 40 µL sample volume requirement supports pediatric and geriatric sampling protocols where venous draw volume is constrained.
FAQ
What sample types are validated for use with the BH7100S?
Whole blood (EDTA-K₂), serum, and plasma — no pretreatment required.
Does the BH7100S support regulatory compliance for clinical reporting?
Yes — it enables GLP-aligned workflows and supports ISO/IEC 17025 documentation requirements when operated within an accredited lab’s QMS.
Can the instrument be integrated into a hospital LIS?
Yes — bidirectional HL7 v2.x and ASTM E1384-compliant interfaces are available via optional middleware.
What maintenance intervals are recommended for routine operation?
Nebulizer cleaning every 200 samples; burner head inspection weekly; lamp alignment verification quarterly; full optical alignment annually by certified service engineer.
Is method validation support provided?
Bohui Innovation supplies application notes, linearity ranges, LOD/LOQ data, and precision/recovery reports per CLSI EP17-A2 and EP05-A3 for all seven elements.
