OSZS Tedlar PVF Gas Sampling Bag w/Stopcock straight valve & septum fitting, 1L, 10-pk
The Tedlar PVF gas sampling bag is made from polyvinyl fluoride (PVF) film produced by DuPont in the United States. The film has a thickness of 2 mil, approximately 0.05 mm.
Tedlar film exhibits excellent chemical resistance, corrosion resistance, and low adsorption of organic solvents. The water vapor transmission rate is 13 g/m².24h at 0.1 MPa, and the oxygen transmission rate is 114 cc/m².24h at 0.1 MPa (these values are measured but not guaranteed). Tedlar gas sampling bags can be used for high-precision ppm-level sampling and are suitable for collecting and preserving various corrosive gaseous and liquid samples. The heat resistance of Tedlar gas sampling bags ranges from 150°C to 170°C.
Sampling bags are a cost-effective whole-air sampling solution for high-level VOCs and permanent gases. Bags made from Tedlar® film offer good stability with VOCs and are recommended in many US EPA methods, including TCLP and methods TO-3 (VOCs), TO-12 (NMOC), TO-14A (VOCs), TO-15 (VOCs), ASTM D-5504 (reduced sulfur compounds), and various atmospheric gas methods.
They are suitable for pollution detection in products like automobile engines, auto parts, household goods, and more.
As the industry standard, Tedlar sampling bags provide a reusable storage medium with excellent retention for most substances.
Our gas sampling bag valves and seam-sealing process ensure that these bags are durable and virtually leak-proof, even under the most demanding sampling and shipping conditions.
Standard sizes for the Tedlar PVF gas sampling bags range from 0.5L to 6000L, with custom sizes and configurations available upon request.
The OSZS stopcock straight valve on the Tedlar PVF 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 provides 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 requires 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.
