High-Precision Laboratory Nitrogen Evaporators & Sample Concentrators

As a premier ISO-certified B2B manufacturer of analytical sample preparation equipment, Hangzhou Qiwei Instrument Co., Ltd. produces commercial-grade Laboratory Nitrogen Evaporators, Sample Concentrators, and Multi-Position Blowing Systems engineered for environmental analysis, food safety testing, pharmaceutical R&D, and pesticide residue labs.

Equipped with independent gas flow control valves, microcomputer PID smart temperature regulation ($\pm 0.1^\circ C$), and corrosion-resistant stainless steel gas needles, our nitrogen evaporators provide rapid, batch solvent evaporation without cross-contamination.

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Circular Water Bath Nitrogen Evaporator
Product model: QW-DCY-YS12A
Number of processed samples: 12 independent controls
Scope of use of test tubes: 11～29mm
The lifting height of the gas filling tray: 0～150mm
Dry Nitrogen Evaporator
Model: QW-DCY-G9A, QW-DCY-G25A
Number Of Samples: 9 workstations / hole diameter 15mm, 25 workstations / hole diameter 15mm
Timing: 0-999 minutes
Temperature Indication Error: ±1℃
Square Water Bath Nitrogen Evaporator
Technical Parameters: Economy model / Anti-dry-burning / Anti-dry-burning + Magnetic stirring
Model: QW-DCY-S12A / S12AF / S12AFC, QW-DCY-S12B / S12BF / S12BFC
Resolution: 0.1,...
Square Type Water Bath Nitrogen Blower with Built-in Air
Model: QW-DCY-KS12A
Burn Without Water In It: None
Magnetic Stirring: None
Resolution Ratio: 0.1℃

Explore Our Laboratory Nitrogen Evaporator Series

Versatile dry bath nitrogen evaporators, water bath sample concentrators, and high-capacity multi-position purging systems designed for rapid solvent removal.

1. Dry Bath Nitrogen Evaporators

Clean, waterless dry block sample concentrators utilizing aluminum heating blocks for rapid thermal transfer, eliminating water bath maintenance and contamination risks.

Capacity: 12, 24, 48, or 96 sample positions available
Temperature Range: Ambient to 150°C ($\pm 0.1^\circ C$)
Independent gas flow control valve for each sample channel

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2. Water Bath Sample Concentrators

Thermostatic water bath nitrogen evaporators offering exceptional temperature uniformity across all sample vials, ideal for delicate biological extracts and organic solvents.

Seamless stainless steel water tank with digital temperature readout
Adjustable vertical lifting platform for sample tube immersion
Pairs well with our Sample Preparation Equipment

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Square Type Water Bath Nitrogen Blower With Built-in Air

3. Intelligent Automated Concentrators

Advanced programmable nitrogen evaporators featuring endpoint detection sensors, auto-shutoff gas valves, and touch-screen digital controllers for unattended batch concentration.

Smart endpoint sensor prevents sample dry-down and analyte loss
Programmable gas pressure and multi-stage timing profiles
Custom OEM branding and voltage options for global distributors

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Critical Industrial Applications & Engineering Strengths

Where Laboratory Nitrogen Evaporators Are Deployed

Nitrogen evaporators and sample concentrators are essential pretreatment instruments utilized wherever solvent evaporation and extract concentration are required. Key sectors include:

Environmental Testing: Concentrating pesticide residues, PCBs, and organic pollutants in water and soil extracts
Food Safety & Agricultural Analysis: Mycotoxin, antibiotic, and veterinary drug residue sample concentration prior to LC-MS/MS
Pharmaceutical & Clinical R&D: Drug metabolite extraction and biological fluid sample preparation
Water Quality Testing: Supporting sample pretreatment workflows alongside our Water Quality Testing Equipment and COD Reactors

Qiwei Manufacturing & OEM Advantages

Supporting global laboratory equipment suppliers, scientific dealers, and brand owners:

Independent Flow Regulation: Individual needle valve control allows simultaneous concentration of different sample volumes without wasting nitrogen gas
Corrosion-Resistant Gas Path: PTFE-coated components and 316 stainless steel needles withstand aggressive organic solvents and acid fumes
OEM & ODM Customization: Custom casing colors, private-label branding, customized voltage/plug (110V/220V), and tailored sample position layouts
Internal Links: Combine with our Dry Bath Incubators, Laboratory Shakers, and Electrochemical Instruments for complete laboratory setups.

Frequently Asked Questions (Nitrogen Evaporator Sourcing Guide)

Q1: What is the advantage of dry block nitrogen evaporators over water bath models?

Dry block nitrogen evaporators use precision-machined aluminum blocks instead of water, eliminating water evaporation, regular cleaning, mineral scale buildup, and biological growth risks while offering faster heat-up times and cleaner operation.

Q2: Can Qiwei nitrogen evaporators accommodate different sample tube sizes?

Yes! Our dry bath nitrogen evaporators support interchangeable aluminum blocks compatible with various test tube sizes, centrifuge tubes, and sample vials (ranging from 1ml to 50ml capacity).

Q3: Do you support OEM custom branding and wholesale distributor pricing?

Yes, as a direct factory manufacturer, we offer complete OEM/ODM custom branding, customized UI panels, private label packaging, and tiered wholesale discounts for global laboratory equipment distributors.

Require Factory Direct Pricing or Custom Laboratory Nitrogen Evaporators?

Get in touch with Hangzhou Qiwei Instrument today for technical consultation, sample position options, and competitive distributor pricing within 24 hours.

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Hangzhou Qiwei Instrument Co., Ltd. is one of the most reliable manufacturers and suppliers of nitrogen evaporator in China, featured by quality products and good service. Please rest assured to buy bulk durable nitrogen evaporator in stock here from our factory. We also accept customized orders.

Circular Water Bath Nitrogen Evaporator, Square Type Water Bath Nitrogen Blower With Built in Air