Tedlar Bags Vs. Summa CanistersNovember 6, 2017
Tedlar Bags vs. Summa Canisters
Taking air samples is one of the essential parts of numerous industries all over the world. This procedure is mainly done to adhere to industry regulations or for research and development (R&D) activities. From industrial manufacturers and processors to surveyors and research, air sampling is done regularly and on a large scale.
There are various methods to obtain an ideal gas sample from the targeted atmosphere. Analyzing VOCs (Volatile Organic Compounds) helps to determine the concentration of specific gases and elements that are not detected by conventional detection and measuring instruments.
Gas sampling methods – Tedlar Bags vs. Summa Canisters
There are two primary methods used worldwide to collect air samples in an ideal manner. These are:
- Tedlar Bags for air sampling
- Summa Canisters for air sampling
Both these methods used for collecting air samples efficiently and efficiently for proper detailed analysis in a well-equipped laboratory, later.
Let us take a look at the remarkable points of each of these air sampling methods:
These are the properties of Tedlar Bags that make it efficient to collect air samples efficiently:
Tedlar bags are:
- Designed for air-tight operations
- Made from high-temperature resistant polymer material for use in varying conditions
- Effective treated to be corrosion-resistant, abrasion-resistant and chemically inert with most compounds
- Manufactured according to industry standard and customized specifications as well
- Highly resistant to gas permeation
- Designed with Teflon valves with a 2-in-1 system for connecting with accompanying Teflon Hose
- Easily removable silicon septum (divider/wall)
- Filled with an air-tight syringe through the port in the septum
Summa canisters are mainly designed to collect air samples over an extended period. The originally negative pressure inside the round canister allows it to suck in small samples from the surrounding air at regular intervals for a longer time.
Summa canisters are:
- Made from high-end Stainless Steel (SS)
- Designed to fit their accompanying vacuum gauges
- Built with an IAQ assessor that adjusts vacuum gauge to allow small volume of air to sampled
- Made to be deployed directly in the area to be analyzed as well as in the background
Summa canisters have used in certain specific conditions, while Tedlar bags are more diverse when it comes to their application in collecting air samples efficiently and correctly.