Shigella sonnei (the most common species in the U.S.) Shigella flexneri; Shigella boydii; Shigella dysenteriae; The transmission of most Shigella infections is caused by the bacterium passing from stools or soiled fingers of one person to
System maintenance. One advantage of the septic tank/absorption field system is that it has no moving parts, but it does require maintenance. Annual inspections of your septic system are recommended to ensure that it is working properly and to determine when scum and sludge in the septic tank should be cleaned out.
Purge protection does not require a special enclosure as normally a standard industrial enclosure will work. This protection method also addresses possible internal releases of flammable gas, vapor, or liquid. This is important for analyzers and other equipment that have a flammable liquid or gas pass through them.