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NWSPEC

Fully Automated Nitrogen Purging Concentrator

Fully Automated Nitrogen Purging Concentrator

Fully Automated Nitrogen Purging Concentrator — PrepN Series

Rapid, unattended sample concentration with vortex airflow and patented end-point detection.

192
Samples per batch (PrepN-96)
90 °C
Maximum water bath temperature
<20 min
Warm-up time (20 to 55 °C)

Why Automate Your Concentration Workflow

Manual nitrogen blow-down concentration requires constant attention: adjust needle height, monitor each tube, stop before dryness, and transfer to vials. One distracted moment means lost sample or cross-contamination.

Batch-to-batch consistency is poor, evaporation times vary, and analysts spend hours watching tubes instead of interpreting data. Over-drying and bumping are common risks.

With full automation:

Load tubes or well plates. Set temperature and pressure. Press start. Walk away. Optical end-point detection stops each channel precisely.

What the System Does

1
Load

Place tubes or 96-well plates into the rack. Supports 8 to 192 positions depending on model

2
Set Parameters

Program water bath temperature (ambient to 90 °C), purge pressure, and end-point volume via touchscreen

3
Nitrogen Purge

Vortex airflow technology delivers consistent gas flow to each needle. Automatic pressure regulation with gradient adjustment

4
Heat

Double-layer water bath or hot-air heating accelerates evaporation. Temperature monitored in real time

5
End-Point Detection

Patented optical sensor detects 0.5 mL or 1.0 mL residual volume per channel automatically. No over-drying

6
Collect

Samples concentrated directly in chromatography vials. No secondary transfer needed. Ready for LC-MS/MS or GC-MS/MS injection

Key Features

Number of samples 8 / 12 / 24 / 60 / 192 (PrepN-8 to PrepN-96)
Maximum sample volume 250 mL / 200 mL / 100 mL / 60 mL / 2 mL
End-point detection Optional on PrepN-8/12/24/60; standard on PrepN-96
Independent control Per-channel or per-row independent concentration paths
Touch screen 7-inch color touchscreen, angle adjustable 0–85°
Water bath temperature Ambient to 90 °C (PrepN-8/12/24/60); ambient to 80 °C (PrepN-96)
Purge pressure Multi-stage adjustable; max intake 0.31 MPa (45 PSI) / 0.8 MPa (116 PSI) on PrepN-96
Power supply AC 100–240 V, 50 / 60 Hz
Overall power 900 W (PrepN-8/12/24/60); 1000 W (PrepN-96)
Operating environment Ambient to 40 °C, 20–80% RH (non-condensing)
Noise ≤ 70 dB
Dimensions (W × D × H) 465 × 430 × 300 mm (PrepN-8/12/24/60); 430 × 430 × 300 mm (PrepN-96)
Machine weight ~30 kg (PrepN-8/12/24/60); ~32 kg (PrepN-96)

What You Can Test

Environmental Analysis

Concentration of water, soil, and sediment extracts prior to GC-MS or LC-MS analysis.

Food and Beverage

Pesticide residue and additive extract concentration for fruits, vegetables, grains, and beverages.

Biological and Clinical

Blood, urine, and tissue extract concentration for drug metabolism and toxicology studies.

Chemical Engineering and Testing

Solvent removal from reaction mixtures and quality-control sample preparation.

Compliance and Data Integrity

  • CE certified for EU market compliance
  • Patented optical end-point sensor technology for precise volume determination
  • Transparent window and water bath illumination for real-time process observation
  • Automatic pressure regulation with gradient purge airflow optimization
  • User-friendly interactive software with adjustable touchscreen angle
  • Compatible with chromatography vial concentration tubes — no secondary transfer

Common Questions

What tube sizes are supported? -
PrepN-8/12/24/60 support 50 mL to 200 mL tubes plus dedicated chromatography vial tubes. PrepN-96 supports standard 96 deep-well and shallow-well plates. Built-in and external racks are available for all formats.
How does end-point detection work? +
A patented optical sensor monitors each channel individually. When the liquid level reaches the preset 0.5 mL or 1.0 mL mark, nitrogen flow to that channel stops automatically. No over-drying, no sample loss, no operator attendance required.
Can I change samples mid-run? +
Yes. Independent concentration paths do not interfere with each other. Samples can be changed in less than 30 seconds per channel without stopping the entire batch.
Is the nitrogen needle angle adjustable? +
Yes. Air nozzles are removable, and airflow angle plus left/right position can be precisely adjusted to match tube geometry and sample volume.
Can it connect to other NWSPEC systems? +
Yes. PrepN is designed for interconnection with other NWSPEC sample preparation systems such as PrepS and PrepV for seamless end-to-end workflows.
What gas supply is required? +
High-purity nitrogen or other inert gases are recommended. Minimum pressure 0.15 MPa (21 PSI), maximum allowable 0.31 MPa (45 PSI) for standard models and 0.8 MPa (116 PSI) for PrepN-96.

Custom method development and application consulting available.

Compatible with LC-MS/MS and GC-MS/MS analytical platforms

View full details
Since 1993 30+ Years of Instrument Expertise
Reliable Manufacturer Manufacturing & Services
Ph.D. Founded Dr. Pingxin Wang, UT Austin
Advantages Price · Service · Speed · Technical · Data
Fast Shipping In-Stock Orders Ship Same Day

Frequently Asked Questions

How can I contact you?

Feel free to call us T+86 189-6516-4839
or email  sales@nwspec.com to:

• Place an order
• Ask for a quote
• Or if you have any other questions

You will always get a live person here at NWSPEC; never an automated system! 

We are open from 6:00AM - 7:00PM Eastern Time, Monday - Friday. 

Where can I find application notes?

If you have any questions regarding the application notes, or can't find the one you are looking for, please contact Sales at sales@nwspec.com



Do you have instructional manuals for your instruments to download?

Yes, we have instructional manuals for our instruments. They can be found on https://nwspec.com/pages/resource .

If you don't see the one you are looking for, please contact: sales@nwspec.com



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