Emissions Gas Sampler

Professional Industrial Gas Sampling Procedure

Industrial gas sampling requires careful execution and strict compliance with ISO and TCVN standards. A standard procedure is typically carried out through the following steps:

Step 1: Planning and Preparation

Before sampling industrial gas, technicians must conduct an on site survey to determine the most representative sampling location, sampling time, and target analytes. At the same time, it is essential to prepare all required sampling equipment such as sampling pumps, absorption tubes, and Tedlar bags, along with mandatory personal protective equipment.

Step 2: On Site Sampling

Technicians install the equipment and begin the gas sampling process with strictly controlled flow rate and duration to ensure representative samples. Depending on the type of gas, different sampling methods may be used, such as absorption into liquid media, adsorption onto solid sorbents, or collection into specialized vacuum canisters.

Step 3: Sample Preservation and Transport

After sampling, each sample is sealed, labeled, and stored under approved conditions, such as protection from light or refrigeration. Transportation must be conducted quickly and safely to prevent any alteration of sample composition.

Step 4: Laboratory Analysis

Samples are analyzed in the laboratory using modern instruments such as GC MS or AAS to ensure accurate and reliable results.

Step 5: Reporting

Finally, the responsible unit prepares a detailed report on pollutant concentrations, compares the results with applicable standards and regulations, and provides conclusions along with recommendations if needed.

Equipment for Industrial Gas Sampling

To achieve high accuracy in industrial gas sampling, selecting the right specialized equipment and ensuring regular calibration are essential. Commonly used equipment groups include:

- Gas Sampling Pumps

Gas sampling pumps are the core devices in industrial sampling, enabling precise control of flow rate and sample volume.

Today’s gas sampling pumps come in various flow ranges, from compact handheld units for personal exposure monitoring to high capacity pumps designed for industrial monitoring. Many models feature timers, automatic pressure compensation, overload alarms, and data logging functions to maximize accuracy under field conditions.

For users prioritizing lightweight design, long battery life, and portability, personal sampling pumps such as the Staplex PST 1DT are suitable for monitoring individual exposure during independent work.

Environmental sampling pumps, on the other hand, offer high capacity and stable operation for collecting ambient air samples around large industrial areas or fixed emission sources. Examples include the Environmental M5 S3 MV Master stack gas sampler and the HI Q PSU 2 H continuous air sampler.

- Sample Tubes and Containers

Depending on the sampling method, technicians may use glass canisters, leak resistant Tedlar bags for extended preservation, or sorbent tubes containing specialized adsorbent materials for capturing target compounds.

- Flow Measurement Devices

These devices monitor gas flow rate throughout the industrial sampling process to ensure compliance with ISO and TCVN technical requirements.

- On Site Direct Measuring Instruments

For parameters requiring immediate determination such as temperature, humidity, or air velocity, direct measuring instruments help technicians optimize sampling setup and ensure accurate input data.

In this workflow, modern industrial gas sampling equipment allows precise control of flow rate, temperature, and pressure to ensure representative samples. EMIN Vietnam provides a full range of certified industrial gas sampling equipment that meets monitoring standards. Contact us for tailored solutions for your facility.