Environmental monitoring or testing is acute requisite in many areas due to nature of the operations, work or living there. For example, hospitals generally require inner environment testing of their operation theater rooms. Same way, there are noise and sound sensitive areas where noise testing or instantaneous noise testing is always required.
These testing include microbiological analysis of air and may include surface as well as ambient air testing.
We have labs in Saudi that cope these type of environmental testing with dexterity and accredited scope.