Industrial Grade Packed Bed Scrubber removes contaminants from the gas stream by passing the stream through a packed structure which provides a large surface area for intimate contact between the gas and the scrubbing liquor. The Scrubber has the feature that the reactivity between the contaminant and the scrubbing liquor influences the system design, the height and diameter of the packed bed. The Industrial Grade Packed Bed Scrubber is designed to ensure that contaminant is absorbed into or reacted with the scrubbing liquor.