Chu Ding Technology HSC-12A Water Bath Nitrogen Evaporator
| Brand | Chu Ding Technology |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Product Category | Domestic |
| Model | HSC-12A |
| Price | USD 760 (FOB Shanghai) |
| Sample Capacity | 12 positions |
| Heating Method | Water bath |
| Gas Flow Range | 0–5 L/min |
| Power Consumption | 150 W |
| Temperature Control | Digital PID controller with dual LED display |
| Max Operating Temperature | 100 °C |
| Construction Materials | 316 stainless steel gas manifolds, anodized aluminum heating block support, corrosion-resistant coated housing |
Overview
The Chu Ding Technology HSC-12A Water Bath Nitrogen Evaporator is a precision sample concentration instrument engineered for reproducible solvent removal in analytical laboratories. It operates on the principle of gentle, controlled nitrogen gas displacement combined with uniform water bath thermal regulation—enabling efficient evaporation of volatile solvents from multiple liquid samples simultaneously without thermal degradation or analyte loss. Unlike dry-block evaporators, the water bath design ensures exceptional temperature homogeneity (±0.5 °C across all 12 positions at 60 °C), minimizing inter-sample variability and supporting compliance-critical workflows in regulated environments. The system is widely deployed in LC-MS, GC-MS, and HPLC sample preparation protocols where consistent recovery of thermolabile compounds—such as pesticides, pharmaceutical metabolites, and environmental contaminants—is essential.
Key Features
- 12-position modular configuration with adjustable-height nitrogen manifold for precise alignment over sample tubes (10–29 mm OD accommodated)
- Digital PID temperature controller with dual LED display: real-time setpoint and actual bath temperature, programmable up to 100 °C with over-temperature cut-off protection
- Independent flow control per channel via precision needle valves; total gas flow range: 0–5 L/min (calibrated at inlet using integrated rotameter)
- Corrosion-resistant construction: 316 stainless steel gas distribution chamber, anodized aluminum structural components, and epoxy-painted steel housing
- Water bath reservoir with transparent acrylic cover and built-in level indicator; capacity: 3.2 L (compatible with deionized water, ethanol/water mixtures, or silicone oil up to 100 °C)
- No dedicated heating block—sample tubes are immersed directly in thermostatically controlled water, eliminating thermal lag and ensuring rapid equilibration
Sample Compatibility & Compliance
The HSC-12A supports standard 10–16 mL glass test tubes, culture tubes, and conical-bottom vials commonly used in EPA Method 525.3, ASTM D7066, and ISO 17025-accredited labs. Its open-bath geometry allows unrestricted access for manual tube insertion/removal and accommodates variable tube heights without adapter changes. All wetted surfaces comply with USP Class VI biocompatibility requirements for contact with aqueous and organic solvents. While not pre-certified to IEC 61010-1, the unit meets general electrical safety requirements for laboratory use in non-explosive atmospheres (Class I, Division 2). For GLP/GMP applications, users may configure audit trails via external data loggers interfaced through RS-232 (optional accessory port).
Software & Data Management
The HSC-12A is a standalone analog-digital hybrid instrument with no embedded firmware or proprietary software. Temperature setpoints and gas flow are manually adjusted and monitored locally. However, its RS-232 interface (available as optional add-on) enables integration with LabArchives, Benchling, or custom LIMS platforms for electronic record retention. When paired with a validated external temperature logger (e.g., Omega OM-EL-USB-1), the system supports 21 CFR Part 11-compliant data capture—including user ID, timestamped setpoint logs, and deviation alerts—provided the host software implements appropriate electronic signature and audit trail functions.
Applications
- Routine concentration of extracts prior to GC-MS analysis in environmental testing (e.g., PAHs in soil leachates per EPA 8270D)
- Preparative cleanup of plasma/urine samples in clinical toxicology workflows (e.g., benzodiazepines per CAP guidelines)
- High-throughput residue analysis in food safety labs (e.g., multi-pesticide screening per EU SANTE/11312/2021)
- Method development for solid-phase extraction (SPE) eluate evaporation under nitrogen blanket to prevent oxidation
- Standardization of derivatization reactions requiring inert atmosphere and precise thermal control (e.g., dansylation of amino acids)
FAQ
What is the maximum recommended operating temperature for the water bath?
The unit is rated for continuous operation up to 100 °C using deionized water. For extended use above 85 °C, silicone oil (10 cSt viscosity) is recommended to reduce evaporation rate and improve thermal stability.
Can the HSC-12A accommodate 2 mL HPLC vials with crimp caps?
Yes—when used with optional low-profile tube holders (sold separately), the adjustable manifold permits secure positioning of 2 mL vials without compromising gas flow efficiency.
Is calibration documentation provided with shipment?
A factory-verified temperature uniformity report (per ASTM E220) and gas flow verification certificate are included. Full IQ/OQ documentation packages are available upon request for regulated lab deployment.
How often should the water bath be refilled or replaced during daily use?
With the acrylic cover installed and ambient lab humidity <60%, typical evaporation loss is <15 mL/day at 60 °C. Weekly replacement with fresh deionized water is advised to prevent mineral buildup.
Does the unit meet CE or UKCA marking requirements?
It complies with EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU when supplied with CE-marked power supply. UKCA marking requires end-user conformity assessment per UK SI 2019/632.
