IML-GSP31 Mud Logging Aluminum-plastic composite film gas sampling bag
Introduction:
Aluminum-plastic composite film gas sampling bag is an excellent substitute for rubber bladder. Aluminum-plastic composite film is made of nylon film (PA), aluminum foil (AL), polyethylene film (PE).
Features:
1. Opaque, with good light shielding, low permeability, good air tightness, small adsorption, stable chemical properties, high mechanical strength.
2. The air bag is equipped with a plastic interface or a metal interface, which is convenient for charging and discharging. The unique high-elasticity tear-resistant rubber sampling pad is dedicated to syringe sampling.
Scope of application:
It can be used for the collection and storage of light-sensitive gas samples. It is mainly used for routine analysis and sampling. It can be filled with gases with stable chemical properties and weak chemical activity such as petroleum cracking gas, natural gas, coal bed gas, soot, ambient atmosphere, and process reaction gases. And inorganic gases such as argon oxyhydrogen.
Noted:
• For sulfide and halogen gas, high content such as percentage level or low content such as ppm level is not recommended.
• Because the two-component adhesive used in the aluminum-plastic composite film can volatilize organic substances such as benzene, ketones, ethers, esters, etc., it should be noted that the organic compounds remaining in the aluminum-plastic composite film can precipitate and can pollute the gas in the sampling bag Samples can cause interference with analytical data.
• If the gas sampling bag is reused, it should be replaced and cleaned multiple times.
• The storage time of the gas sample in the sampling bag should not be too long. The specific storage time has a lot to do with the detection time required for experimental analysis, the type of gas composition, temperature and humidity, and pressure. Generally speaking, inert pure gas can be used as Temporary storage containers are recommended to be stored for no more than 72 hours; for common standard gases, flue gases, ambient atmosphere, etc., it is recommended to be stored for no more than 24 hours.
• To reuse the sampling bag, it must be washed and replaced many times. It is recommended to collect the same sample in the same sampling bag, and do not mix them.
• The sample bag is heated and replaced with high-purity nitrogen to reduce the interference of organic precipitates.
• The inflation pressure does not exceed 6KPa. Visual observation is that the airbag is fully bulged, but it is not taut when pressed with fingers. Overpressure filling can cause burst damage to the gas sampling bag.
• During storage and use, keep away from fire and high temperature, and avoid puncture by sharp objects.
• When sampling and cleaning, please do not exceed 80% of the calibration volume. Taking a 1L sampling bag as an example, it is recommended that the sampling volume does not exceed 0.8L.
• For precise experimental analysis, a blank sample bag must be used for comparison and background deduction.
• For high-pressure and high-temperature gas should be sampled under normal temperature and pressure, the specific treatment method depends on the actual situation.
• For negative pressure gas, a vacuum pump with appropriate power and flow rate should be used for sampling.
• For the gas containing particles, dust and aerosol, a filtering device should be used to prevent contamination of the sampling bag, which will make cleaning difficult.
