OSZS Multi-layer foil gas sampling bag w/Stopcock straight valve & septum fitting, 1L, 10-pk
The OSZS multi-layer foil gas sampling bag (Multifoil gas sampling bag) provides an economical and reliable solution for air sampling. Constructed with a composite material comprising nylon membrane (PA), aluminum foil (AL), and polyethylene film (PE), these layers are bonded using a two-component adhesive. This design is specifically engineered to safeguard light-sensitive gas samples, making it ideal for standard gas sampling and filling applications where chemical stability is crucial. These applications include oil-cracking gas, natural gas, coal bed gas, flue gas, ambient air, process reaction gases, and inorganic gases such as nitrogen, hydrogen, oxygen, and argon.
The material's chemically inert properties ensure that it does not interfere with or contaminate the collected air samples. It offers robust protection against light and moisture, while also providing exceptional physical strength and chemical stability. The bag is opaque, features low adsorption and permeability, and is completely airtight.
The innovative seam construction enhances durability, and the heat-sealed seams ensure a leak-proof performance.
These sampling bags are an effective and economical choice for air sampling of high-level volatile organic compounds (VOCs) and permanent gases. They are extensively used in petrochemical industries, environmental protection efforts, and scientific research institutions. However, due to the potential for background contamination, they are not recommended for sampling low PPM VOCs.
Standard sizes for the Aluminum-Foil (Multi-Layer) Gas Sampling Bags range from 0.5L to 6000L, with custom sizes and configurations available upon request.
The OSZS stopcock straight valve on the Multi-Layer Foil Gas Sampling Bag is positioned perpendicular to the film surface, with an external sampling tube featuring an outer diameter of 6 mm. The stopcock straight valve is designed with a self-sealing mechanism, ensuring a secure seal without any rubber components coming into contact with the gas inside the collection bag, thereby eliminating the risk of sample contamination.
The valve includes a sampling cap fitted with a silicone rubber septum, with the septum's exposure to the gas inside the sampling bag regulated by the valve. The silicone septum only interacts with the gas when the valve is in the open position. To extract a gas sample using a sampling needle, rotate the valve handle so that it aligns with the sampling cap. This action allows the gas inside the bag to come into contact with the silicone septum. After completing the sampling process, rotate the valve handle 90 degrees to close the valve, effectively isolating the gas inside the bag from the septum.
This design minimizes prolonged contact between the silicone rubber septum and the gas sample, reducing the risk of septum corrosion by the gas or contamination of the gas sample by the septum.
OSZS provide gas sampling bags free of charge for testing, but the shipping costs are the responsibility of the customer. To ensure you have accurate information on the shipping fees, please send your detailed shipping address and related information to max@oszs.com. We will promptly respond with the relevant cost details.
For all international orders, OSZS require payment in advance. You can choose to pay via PayPal or wire transfer. Please email max@oszs.com to obtain our account information and further payment instructions. We are committed to providing you with a fast and secure payment service, ensuring your order is processed smoothly.
