The CHEM-VAC Scrubber System has three completely separate chemical reservoirs. This enables the unit to scrub different types of hazardous vapors simultaneously. We have designed a complete line of chemicals for this scrubber unit. These chemicals are concentrated into 5 gallon pails known as CHEM-PAC's. Each CHEM-PAC is designed for a particular vapor or odor. For instance, if you will be needing vapor control for hydrocarbons, you would use CHEM-PAC HC. For hydrogen sulfide you would add a pail of CHEM-PAC B and dilute with water. This system is very simple and limits operator exposure to chemicals. For more information on CHEM-PAC's or the CHEM-VAC System please contact Vapor Technologies, Inc.