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The Labshark Non-Methane Hydrocarbon Sampler (also referred to as an NMHC Sampler, Non-Methane Total Hydrocarbon Sampler, or Vacuum Box Air Bag Sampler) is a high-performance portable sampling device designed for collecting volatile organic compound (VOC) samples. Using vacuum chamber technology, this Air Bag Sampler supports both positive-pressure purging and negative-pressure collection modes, ensuring gas enters the air bag directly without passing through the pump—eliminating cross-contamination and ensuring sample integrity. This method is widely recognized as the air bag method for environmental monitoring.
Available in multiple configurations—Fixed Flow Sampler, Adjustable Flow Sampler, One-Click Cleaning Sampler, and Hand Pump—this Vacuum Chamber Sampler offers flow accuracy of ±5% and is compliant with HJ 732-2014. Whether you need a fixed flow sampler for routine monitoring, an adjustable flow sampler for versatile field work, or a one-click cleaning sampler for high-efficiency operations, Labshark delivers reliable performance for every application.
Sampler Type | Applicable Sampling Range | Key Features |
|---|---|---|
Fixed Flow Sampler | 1-3 L / 3-5 L / 5-10 L | Rechargeable + AC powered, lightweight, stable flow rate, cost-effective |
Adjustable Flow Sampler | 1-10 L | Rechargeable + AC powered, adjustable flow, strong adaptability |
One-Click Cleaning Sampler | 3-10 L | Rechargeable + AC powered, universal inlet/outlet port, efficient sampling |
Vacuum Sampling Case (Hand Pump) | 1-5 L | Lightweight, compact, portable, no power supply needed |
General Specifications:
Parameter | Details |
|---|---|
Sampling Technology | Vacuum chamber (positive-pressure purge / negative-pressure collection) |
Flow Accuracy | ±5% |
Power Supply | Built-in rechargeable lithium battery |
Sampling Bag Compatibility | PTFE air bags (1-10L) |
Compliance | HJ 732-2014 |
Compatible Accessories | Heated sampling tube, flow calibrator, quick-connect fittings |
This NMHC Sampler utilizes advanced vacuum chamber technology, supporting both positive-pressure purging and negative-pressure collection modes. The sample gas enters the air bag directly through the sampling tube without passing through the pump, ensuring zero contamination and preserving the integrity of your VOC samples.
The air bag is placed inside the vacuum chamber and connected directly to the stainless steel inlet. When the pump creates negative pressure, the gas flows directly into the bag without contacting the pump mechanism. This air bag method eliminates the risk of pump contamination and ensures pure, reliable samples for VOC sampling.
Equipped with a high-capacity rechargeable lithium battery, this Vacuum Chamber Sampler provides extended operation time for field sampling. The battery level display allows you to monitor power status in real-time, ensuring you never run out of power during critical sampling operations.
The Non-Methane Total Hydrocarbon Sampler features precise flow control with an accuracy of ±5%, ensuring consistent and reproducible sample volumes. This level of precision makes it suitable for NMHC sampling and other applications where accurate flow measurement is critical.
Choose from four configurations to match your specific requirements:
Fixed Flow Sampler: Stable flow rate for routine monitoring, cost-effective.
Adjustable Flow Sampler: Adaptable flow for versatile field applications.
One-Click Cleaning Sampler: Universal inlet/outlet port for efficient high-throughput sampling.
Hand Pump: Lightweight, portable, no power needed for simple operations.
The Vacuum Box Air Bag Sampler complies with HJ 732-2014 and other relevant national standards for VOC sampling, ensuring that your sampling procedures meet regulatory requirements for environmental monitoring and industrial hygiene.
Your Need | Recommended Model |
|---|---|
Routine VOC/NMHC monitoring, stable flow | Fixed Flow Sampler – 1-10L range, rechargeable + AC powered. |
Versatile field sampling, adjustable flow | Adjustable Flow Sampler – 1-10L range, strong adaptability. |
High-efficiency sampling, easy cleaning | One-Click Cleaning Sampler – 3-10L range, universal ports. |
Basic sampling without power supply | Hand Pump Vacuum Chamber – 1-5L range, lightweight, portable. |
Before use, ensure the battery is fully charged (check the battery level display). For the hand pump model, no power is required—simply ensure the chamber is clean and ready.
Open the top cover of the sampling case, place the PTFE air bag inside, open the bag valve, connect the tubing to the stainless steel inlet of the sampling case, then close the top cover securely.
Use the tubing to connect the direct air sampling case (the end not connected to the sampling bag) to the suction side of the vacuum pump.
When the air bag has inflated to the desired level, sampling is complete. Immediately turn off the vacuum pump to prevent the bag from bursting. Close the bag valve and remove it from the chamber.
Precautions:
Do not operate with wet hands.
Ensure the sampling bag is properly positioned to avoid blockage.
After sampling, release the negative pressure before opening the top cover.
Clean the chamber regularly to prevent contamination.
Our Vacuum Chamber Sampler is widely used in:
Environmental Monitoring: NMHC and VOC sampling in ambient air.
Industrial Hygiene: Stack sampling and effluent gas collection.
Research Laboratories: Groundwater testing and soil gas sampling.
HazMat Testing: Hazardous material screening and occupational safety.
Ventilation Studies: Indoor air quality assessment.
Whether you need a Non-Methane Hydrocarbon Sampler for regulatory compliance, a VOC sampler for scientific research, or a Vacuum Box Air Bag Sampler for industrial monitoring, Labshark provides reliable, contamination-free solutions.
A: The Vacuum Chamber Sampler is compatible with PTFE air bags from 1L to 10L, depending on the model selected.
A: The sample gas enters the air bag directly through the stainless steel inlet without passing through the pump. This eliminates both pump contamination and sample contamination, ensuring pure VOC samples.
A: The NMHC Sampler features a flow accuracy of ±5%, ensuring precise and consistent sample collection.
A: Yes. The hand pump vacuum chamber model requires no power supply, making it ideal for field applications where electricity is unavailable.
A: Yes. The Non-Methane Total Hydrocarbon Sampler complies with HJ 732-2014 and other relevant national standards for VOC sampling.
Whether you are an environmental scientist, industrial hygienist, or research technician, Labshark Non-Methane Hydrocarbon Samplers offer the perfect combination of contamination-free transfer, precise flow control, and portable design. Choose from Fixed Flow, Adjustable Flow, One-Click Cleaning, or Hand Pump models to match your specific sampling needs.
Order your Labshark NMHC sampler today! Bulk inquiries and custom configurations are welcome – contact our team for assistance.
