Nutech 2703 Automatic Air Sampling Device – For VOC Sampling
The Nutech 2703 is a fully automated air sampling device designed for accurate and reliable collection of VOC samples using evacuated canisters. It is widely used in environmental monitoring, scientific research, and third-party laboratory testing.
The system integrates precise electronic flow control, pressure monitoring, automated leak checking, and programmable sampling into a single compact unit. With built-in QA/QC functions and continuous recording of sampling parameters, the 2703 ensures data integrity and traceability for every sampling event.
Compared with the previous 2701 model, the 2703 features a fully integrated design that combines flow control, timing, and vacuum pressure measurement into one controller. This significantly improves operational efficiency, reduces setup complexity, and enhances sampling reliability in field applications.
In addition, the 2703 supports remote operation via mobile app or PC software, enabling flexible configuration, scheduled sampling, and real-time monitoring without on-site supervision.
The 2703 controller combines the function of : Flow Control + Timer + Pressure Reading
Standard Operating Procedure for the Collection of Volatile Organic Compounds for the EPA School Air Toxics Program listed Nutech 2701 as the designated air sampler.
https://archive.epa.gov/schoolair/web/pdf/sopvoc.pdf
Features of Nutech 2703 VOC Sampler
1. Fully Automated Operation with Flexible Control
The Nutech 2703 features a next-generation integrated controller combining electronic flow control, programmable timing, and real-time pressure monitoring in a single unit.
Operation is available via the onboard interface, PC software, or mobile app, allowing intuitive setup of sampling parameters. Wireless scheduling of start and stop times enables fully automated sampling, significantly reducing field labor and operator intervention.
App is available on App Store & Google Play
Nutech 2703 Air Sampler Smartphone Operation Interface
Mobile App for operation. Easy, simple, time-saving
Complete quality control with flow and pressure record
Nutech 2703 VOC Sampler PC Software Operation Interface
2. Extended Battery Life for Field Deployment
Equipped with a high-capacity rechargeable lithium battery and low-power design, the 2703 supports extended operation in the field. The system can remain on standby for up to 7 days and perform long-duration sampling without frequent recharging.
3. Robust Design for Diverse Sampling Environments
The 2703 is designed for reliable operation in demanding environments, featuring a weather-resistant enclosure that is both dustproof and waterproof.
Its modular configuration supports a wide range of sampling media, including canisters, cartridges, and gas sampling bags, providing flexibility for different monitoring applications.
4. High-Precision Sampling with Reduced Risk of Failure
The system utilizes high-accuracy pressure and flow sensors with active electronic control to maintain stable and precise sampling conditions.
Unlike traditional restrictor-based samplers, the 2703 minimizes the risk of flow instability and clogging. Inert-treated sampling pathways further reduce adsorption, carryover, and contamination, ensuring reliable VOC recovery.
5. Built-in QA/QC and Data Transparency
The 2703 incorporates automated leak checking and continuously records sampling pressure and flow rate throughout the entire process.
Both real-time and historical data can be visualized, reviewed, and exported, providing full traceability and supporting QA/QC requirements for regulatory and laboratory applications.
Nutech 2703 at Field VOC Sampling
Technical Data
| Supported Canister Sizes | 1L/3L/6L/15L |
| Controll Method | Mobile App (Android & iOS), PC Software, On-board PLC |
| Communication with Smartphone / PC | WiFi |
| Flow Rate Control | High Precision MFC |
| Flow Rate Accuracy | ±2% |
| Flow Rate Range | 0-50sccm or 0-100sccm |
| Sampling Duration | 1-24 Hours without hardware replacement |
| Flow Path Inert Treatment | Silica Coated |
| Timer | Integrated |
| Pressure Reading | Supported |
| Pressure range | –15 to 0 psig |
| Pressure Accuracy | ±2% |
| Leak Check | Supported |
| Battery Capacity | 7 AH. Rechargeable. 24 hrs Sampling Supported |
| External Power Supply | Supported |
| Charger Input Voltage | AC 100–240 V |
| Display | LCD Screen |
| Water-Proof | Yes |
| Quality Control Method | Pressure and Flow Rate Chart |
| Working Temperature | -10~60℃ |
| Working Pressure | -14.7~+7.35psi |
| Elevation Correction | Supported |
| Inlet Port | Reducing Union 1/4″-1/16″ |
| Outlet Port | Reducing Union 1/16”-1/4” |
| Controller Weight & Size | 1.5 kg 20x10x7 cm |
| Weight & Size with Carrying Case | 3 kg 31.5×22.5×11 cm |
2701 Automatic Air Sampling Device (2703 Predecessor Model)
1. Adopting PLC control and automatically starting sampling program through time setting.
2. The 2701 has a stainless steel protective body, and is both water proof and dust proof. It is also equipped with a filter kit, allowing for operations in all but extreme weather conditions.
3. Silanized paths minimize the carryover and contamination.
Coupled with Mechanical Flow Restrictor & Pressure Gauge
Customer Testimonial
Nutech 2703 Portable VOC Sampler for Summa Canister
With Portable Case for Convenient Field Sampling
Customized Tripod for Simple Parallel Sampling
Extended Outdoor Deployment with Sampling Shelter, External Battery & Trigger Sensor
with shelter & external battery
with sensor for triggered sampling
2 units of 6L canister for sequential sampling
FAQ
Supported Methods & Standards
Nutech instruments are designed to support a wide range of internationally recognized monitoring methods and standards.
US EPA Method TO-14A/15/15A
Determination of Volatile Organic Compounds (VOCs) in Air Collected in Specially Prepared Canisters and Analyzed by Gas Chromatography–Mass Spectrometry (GC-MS)
US EPA Method 327
Fugitive and Area Source Measurement of Selected Volatile Organic Hazardous Air Pollutants Using Specially Prepared Canisters
US EPA Method OTM-50
Sampling and Analysis of Volatile Fluorinated Compounds from Stationary Sources Using Passivated Stainless Steel Canisters
NIOSH Method 3900
Volatile Organic Compounds, C1 to C10, Canister Method
ASTM D5466-21
Standard Test Method for Determination of Volatile Organic Compounds in Atmospheres (Canister Sampling, Mass Spectrometry Analysis Methodology)
GAW (Global Atmosphere Watch) Report 204
Standard Operating Procedures for Air Sampling in Stainless Steel Canisters for Non-Methane Hydrocarbons Analysis
China HJ 759
Ambient air-Determination of volatile organic compounds- Collected by specially-prepared canisters and analyzed by gas chromatography/mass spectrometry
China HJ 1444
Ambient air－Determination of 10 sulfur compounds－Collected in canisters and analyzed by preconcentration/gas chromatography
Japan National VOCs Analysis Standard (7 Compound with TO-17 and 14 Compound with TO-15)
Manual for Measurement Methods for Monitoring Volatile Organic Compounds (VOC) Concentrations in Ambient Air
Japanese original name: 環境大気中の揮発性有機化合物（VOC）濃度モニタリングに係る測定方法マニュアル
Taiwan NIEA A715.16B
Method for Determination of Volatile Organic Compounds (VOCs) in Air Collected in Canisters and Analyzed by Gas Chromatography/Mass Spectrometry (GC/MS)
Taiwan NIEA A741.12B
Method for Determination of N-Butyl Acetate and Other VOCs in Air Collected in Canisters and Analyzed by GC/MS
