Sample Concentrator
Nitrogen blow-down sample concentrator with precise temperature control (RT+5°C to 160°C) and programmable timing for solvent evaporation in analytical sample preparation.
Louise Corscadden, PhD
Neuroscience · ConductScience
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The ConductScience Sample Concentrator is a nitrogen blow-down evaporation system designed for sample preparation workflows requiring controlled solvent removal and analyte concentration. The system features precise temperature control (RT+5°C to 160°C) with ±1°C accuracy at 120°C and uniform heating across the sample block. A dedicated nitrogen delivery system provides 15 L/min flow rate at 0.1 MPa pressure through a 150mm needle for efficient solvent evaporation.
The digital control interface provides 0.1°C display resolution and programmable timing from 1 minute to 99 hours 59 minutes, enabling consistent protocol execution for trace analysis sample preparation. The system accommodates standard sample tubes and vials within a single heating block configuration, suitable for analytical chemistry laboratories requiring reproducible concentration procedures.
How It Works
The sample concentrator operates on controlled nitrogen gas evaporation principles, where heated nitrogen flow facilitates rapid solvent removal while maintaining sample temperature within precise limits. The system combines thermal energy transfer through the heated aluminum block with controlled gas flow dynamics to achieve efficient mass transfer of volatile solvents from liquid samples.
Temperature regulation occurs through closed-loop feedback control between the heating element, thermal sensor, and digital controller, maintaining ±0.5°C uniformity across the block surface. The nitrogen delivery system provides laminar flow through the 150mm needle positioned above samples, creating a controlled atmosphere that prevents oxidation while accelerating evaporation kinetics. The combination of controlled temperature and inert gas flow enables reproducible concentration ratios essential for quantitative analytical procedures.
Features & Benefits
Automation Level
- semi-automated
Temp. Control Range
- RT.+5°C~160°C
Temp. Uniformity
- ≤±0.5°C
Display Accuracy
- 0.1°C
Heating Time
- ≤15min(from 25°C to 160°C)
Nitrogen Flow Rate
- 15L/min
Nitrogen Rressure
- 0.1Mpa
Max Power
- 500W
Power/Voltage
- 220V, 50/60Hz; 110V, 60Hz
Temp. Accuracy
- ±1°C(@120°C)
Timing Range
- 1min~99h59min/∞
Needle Length
- 150mm
Block Quantity
- 1
Packing Size(W*D*H)
- 430*420*340mm
Brand
- ConductScience
Research Domain
- Analytical Chemistry
- Clinical Diagnostics
- Environmental Monitoring
- Food Science
- Pharmaceutical QC
Dimensions
- 260*220*475mm
Weight
- 29.1 kg
Dimensions
- L: 39.37 mm
- W: 5.91 mm
- H: 3.94 mm
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Temperature Accuracy | ±1°C at 120°C | Entry-level systems often provide ±2-3°C accuracy | Improved accuracy enables more precise control of concentration conditions for temperature-sensitive analytical procedures. |
| Temperature Uniformity | ≤±0.5°C across block | Basic models may show ±1-2°C variation | Better uniformity ensures consistent evaporation rates across all sample positions for reliable quantitative results. |
| Heating Performance | ≤15min to reach 160°C from 25°C | Slower heating systems require 20-30 minutes | Faster temperature response reduces protocol setup time and enables more efficient sample throughput. |
| Nitrogen Flow Control | 15 L/min at 0.1 MPa with 150mm needle | Basic systems offer fixed flow with shorter needles | Controlled flow rate and extended needle length provide optimal gas delivery for various sample container sizes. |
| Programming Capability | 1min to 99h59min with infinite mode | Simple timers often limited to 12-24 hour maximum | Extended timing capability supports complex protocols requiring multi-day concentration procedures. |
This concentrator offers precise temperature control with excellent uniformity specifications and flexible programming options. The integrated nitrogen delivery system provides controlled evaporation conditions suitable for both routine and specialized analytical sample preparation requirements.
Practical Tips
Verify temperature accuracy monthly using a calibrated thermometer placed in direct contact with the heating block surface.
Why: Temperature drift over time can affect concentration reproducibility and protocol validity.
Clean the heating block weekly with isopropanol to remove sample residues and maintain efficient heat transfer.
Why: Contamination buildup reduces thermal conductivity and can introduce analytical artifacts.
Position sample vials to ensure direct contact with the heating block surface rather than relying on air gap heating.
Why: Direct thermal contact provides more consistent and efficient heat transfer for reliable evaporation rates.
Ensure adequate laboratory ventilation and use appropriate fume extraction when concentrating organic solvents.
Why: Solvent vapors can accumulate even with nitrogen purge and pose health and safety risks.
Record actual evaporation times and final volumes to calculate concentration factors for each sample batch.
Why: Documented concentration ratios enable accurate analytical calculations and support data integrity requirements.
If evaporation rates seem slow, check nitrogen pressure at the source and verify no blockages in the delivery needle.
Why: Insufficient gas flow reduces mass transfer efficiency and extends concentration time beyond protocol specifications.
Start with lower temperatures for initial method development to determine minimum effective evaporation conditions.
Why: Using the lowest effective temperature minimizes thermal degradation of heat-sensitive analytes while maintaining efficiency.
Setup Guide
What’s in the Box
- Sample Concentrator main unit
- Power cord
- Nitrogen connection fittings (typical)
- Sample positioning needle
- User manual
- Calibration verification certificate (typical)
Warranty
ConductScience provides a standard one-year manufacturer warranty covering defects in materials and workmanship. Technical support includes protocol consultation and troubleshooting assistance for optimal system performance.
Compliance
What solvents can be safely evaporated with this nitrogen concentrator?
The temperature range of RT+5°C to 160°C accommodates most common laboratory solvents including methanol, acetonitrile, hexane, and dichloromethane. Consult solvent safety data sheets for appropriate evaporation temperatures and ensure adequate ventilation.
How many samples can be processed simultaneously?
The system includes one heating block configuration. Specific sample capacity depends on vial size and spacing requirements - consult product datasheet for detailed sample holder specifications.
What nitrogen purity grade is recommended for operation?
Use analytical grade nitrogen (99.9%+ purity) to prevent contamination and ensure consistent inert atmosphere during concentration procedures. Laboratory nitrogen supplies typically meet these requirements.
Can the system operate unattended for extended periods?
Yes, the programmable timer allows operation up to 99 hours 59 minutes or infinite mode for overnight and weekend concentration protocols. Ensure adequate nitrogen supply and proper laboratory safety protocols are in place.
What maintenance schedule is recommended?
Perform weekly cleaning of the heating block, monthly verification of temperature accuracy, and quarterly nitrogen flow rate checks. Replace consumable fittings as needed based on usage frequency.
How does temperature uniformity affect concentration reproducibility?
The ≤±0.5°C uniformity specification ensures all sample positions receive equivalent thermal energy, critical for achieving consistent concentration factors across multiple samples in quantitative analytical procedures.
Is the system suitable for heat-sensitive compounds?
The low-temperature capability (RT+5°C minimum) and precise control (±1°C accuracy) make it suitable for gentle concentration of thermolabile compounds when operated at appropriate temperature settings.
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