22 00 00 Plumbing
22 60 00 Gas and Vacuum Systems for Laboratory and Healthcare Facilities
22 61 00 Compressed-Air Systems for Laboratory and Healthcare Facilities 22 62 00 Vacuum Systems for Laboratory and Healthcare Facilities 22 63 00 Gas Systems for Laboratory and Healthcare Facilities 22 66 00 Chemical-Waste Systems for Laboratory and Healthcare Facilities 22 67 00 Processed Water Systems for Laboratory and Healthcare Facilities