HengAo HSC-12A Water-Bath Nitrogen Evaporator
| Brand | Tianjin HengAo |
|---|---|
| Origin | Tianjin, China |
| Manufacturer Type | Direct Manufacturer |
| Model | HSC-12A |
| Heating Method | Water Bath |
| Temperature Range | 0–100 °C |
| Temperature Stability | ±1 °C |
| Sample Capacity | 12 or 24 positions |
| Adjustable Tube Holder Diameter | Yes |
| Gas Flow Rate | 0–5 L/min |
| Heating Power | 150 W |
| Weight | 4.5 kg |
| Control | 4-digit LED display with PID temperature regulation, overheat protection, PTC heating element |
| Power Supply | 220 V, 50 Hz |
| Gas Inlet Pressure | 0–200 kPa |
| Materials in Contact with Solvents | 316 stainless steel, anodized aluminum, plastic-coated surfaces |
Overview
The HengAo HSC-12A Water-Bath Nitrogen Evaporator is an engineered solution for gentle, reproducible solvent removal from multiple liquid samples under inert atmosphere. It operates on the principle of controlled nitrogen gas sweeping across the surface of sample vials immersed in a precisely regulated water bath—enabling efficient evaporation while minimizing thermal degradation, oxidation, and analyte loss. Unlike dry-block evaporators, the water-bath configuration ensures uniform heat distribution and superior temperature homogeneity across all sample positions, making it especially suitable for thermally labile compounds encountered in pharmaceutical QC, environmental residue analysis, and clinical biochemistry workflows. Designed for routine use in GLP-compliant laboratories, the HSC-12A supports method consistency through stable thermal control (±1 °C), adjustable gas flow (0–5 L/min), and modular tube holder geometry.
Key Features
- Water-bath heating system with PID-controlled digital thermostat (0–100 °C range) and dual 4-digit LED display for simultaneous setpoint/actual temperature monitoring
- Overheat protection circuitry and PTC heating elements ensure operational safety and long-term thermal stability
- Adjustable-height gas distribution manifold with individually controllable nitrogen channels—each needle can be engaged or isolated to accommodate varying vial heights and sample volumes
- Tubular sample holders fabricated from corrosion-resistant 316 stainless steel; base plate and structural components made from anodized aluminum or plastic-coated metal to resist solvent exposure and facilitate cleaning
- Modular design accommodates both 12-position and 24-position configurations without hardware modification; tube diameter adjustment mechanism allows secure clamping of vials ranging from 10 mm to 28 mm OD
- Compact footprint (approx. 280 × 220 × 350 mm) and low power consumption (150 W) enable integration into fume hoods or shared benchtop environments
Sample Compatibility & Compliance
The HSC-12A is compatible with standard 10–15 mL glass test tubes, GC vials, centrifuge tubes, and custom containers used in EPA Method 508, AOAC 991.22, and ISO 17025-accredited residue testing protocols. Its inert gas environment meets requirements for oxygen-sensitive extractions per USP and ICH Q5C guidelines. All wetted materials comply with FDA 21 CFR Part 11 recommendations for equipment used in regulated bioanalytical laboratories. The unit does not include onboard data logging but supports external recording via analog output (optional) and adheres to general electrical safety standards (IEC 61010-1) for laboratory equipment.
Software & Data Management
The HSC-12A operates as a standalone instrument with no embedded software or network interface. Temperature setpoints, gas flow initiation, and runtime are manually configured using front-panel controls. For traceability in regulated environments, users may integrate the device into validated workflows by pairing it with external electronic lab notebooks (ELNs) or LIMS platforms that record operator inputs, session timestamps, and environmental logs. While the unit itself does not generate audit trails, its mechanical simplicity and deterministic control architecture support straightforward IQ/OQ/PQ validation documentation aligned with GMP Annex 15 and ISO/IEC 17025 clause 5.5.2.
Applications
- Residue analysis: Pesticide extraction from fruits, vegetables, cereals, and plant tissues per EN 15662 and SANTE/11312/2021 guidelines
- Environmental testing: Concentration of trace organochlorines, PAHs, and PCBs in drinking water, wastewater, and sediment extracts
- Pharmaceutical development: Sample preparation prior to HPLC-MS/MS quantification of impurities, genotoxic metabolites, and residual solvents
- Clinical toxicology: Pre-concentration of urine and plasma samples for detection of β-agonists (e.g., clenbuterol), dioxins, and veterinary drug residues
- Food safety: Fat-soluble vitamin recovery, mycotoxin cleanup, and flavor compound isolation in dairy, alcoholic beverages, and functional foods
FAQ
What is the maximum recommended operating temperature for the HSC-12A water bath?
The unit is rated for continuous operation up to 100 °C; exceeding this limit may compromise seal integrity and accelerate bath fluid evaporation.
Can the HSC-12A be used with gases other than nitrogen?
Yes—argon or helium may be substituted where higher inertness or lower thermal conductivity is required, provided gas pressure remains within 0–200 kPa specifications.
Is calibration certification available for this model?
Factory calibration certificates (traceable to NIST standards) can be supplied upon request; users are advised to perform periodic verification using calibrated thermometers and flow meters per ISO/IEC 17025 Section 6.4.
Does the instrument include a nitrogen generator or gas regulator?
No—the HSC-12A requires an external compressed gas source and compatible pressure-reducing regulator; inlet fittings accept standard 1/8″ NPT connections.
How often should the water bath fluid be replaced?
Distilled or deionized water should be refreshed weekly in high-throughput labs; biocide additives or glycerol/water mixtures may extend service intervals when elevated temperature stability is critical.
