OSZS Devex Multi-layer gas sampling bag w/L-type On/Off Combination valve & septum fitting, 10-PK.
The OSZS Devex Multi-layer gas sampling bag is a high-performance upgrade to aluminum-plastic composite gas sampling bags. The Devex multilayer film, developed by our company in collaboration with several renowned specialists, uses advanced international film production technology to create a specialized film for gas sampling bags. This film consists of a polyurethane (PET) film, nylon (PA) film, aluminum foil (AL), and polyethylene (PE) film, all bonded with an eco-friendly adhesive. The outer layer is made of polyurethane (PET) and the inner layer is polyethylene (PE), with a thickness of 130 μm.
The Devex multilayer film is fundamentally different from aluminum-plastic composite film. It has lower adsorption, greater chemical stability, excellent mechanical strength, superior chemical and corrosion resistance, and a lower permeability rate, and its gas barrier properties are 1,000 times better than those of aluminum-plastic composite film. As a specialized film for gas sampling bags, the overall performance of the Devex multilayer film surpasses that of PVDC film (marketed as Saran by Dow Chemical Inc.). The inner layer of the Devex multilayer film uses an eco-friendly adhesive, leaving no residual organic compounds such as benzene, ketones, ethers, or esters, and does not release volatile organic compounds (VOCs), ensuring that gas samples inside the bag remain uncontaminated.The Devex gas sampling bag is suitable for environmental monitoring, odor analysis sampling, and high-precision ppm-level sampling. It can be used to contain gases with stable chemical properties and low chemical reactivity, such as petroleum cracking gas, natural gas, coalbed methane, flue gas, ambient air, process gases, and inorganic gases like nitrogen, hydrogen, oxygen, and argon. However, for gases with high chemical reactivity, such as sulfides, nitrogen oxides, and halogen gases, particularly at low concentrations like ppb levels, it is not recommended for use.
Standard sizes for the Devex Multi-layer gas sampling bag range from 0.5L to 6000L, with custom sizes and configurations available upon request.
The OSZS L-type On/Off Combination valve on the Devex Multi-layer gas sampling bag is constructed from durable ABS material, with an air tube that has an outer diameter of 6.7 mm.
Instructions for Use:
Rotate the valve to the left to elevate its position and open it.
Rotate the valve to the right to lower its position and close it.
The L-type On/Off Combination valve is user-friendly and provides a reliable seal. A silicone pad inside the valve cap facilitates gas sampling from the bag via an access port in the pad.
The air tube connected to the valve is versatile, allowing for the filling, emptying, and vacuuming of the gas sampling bag.
This valve is suitable for collecting and storing inorganic and organic gas samples that are non-corrosive to ABS and silicone rubber.
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 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.
