How does a gaspak anaerobic system work?

The GasPak anaerobic system works by removing oxygen from a sealed environment to create conditions suitable for anaerobic bacteria. Here’s a simple explanation of the process:

• Preparation: Culture media or samples are placed inside an airtight jar along with an anaerobic indicator strip that changes color if oxygen is present.
• Activation: A gas generator sachet is then added to the jar. When activated—often by adding water—the sachet’s chemicals (like sodium borohydride and sodium bicarbonate) react to produce hydrogen and carbon dioxide gases.
• Oxygen Removal: The hydrogen gas reacts with any oxygen present in the jar. This reaction is typically catalyzed by a palladium catalyst, converting oxygen into water and thereby eliminating oxygen from the environment.
• Confirmation: The anaerobic indicator strip is monitored. If the strip changes to a color that indicates low or no oxygen, it confirms that the jar is now anaerobic, creating the right conditions for the growth of anaerobic microorganisms.