22 00 00 Plumbing
22 60 00 Gas and Vacuum Systems for Laboratory and Healthcare Facilities
22 61 00Compressed-Air Systems for Laboratory and Healthcare Facilities22 62 00Vacuum Systems for Laboratory and Healthcare Facilities22 63 00Gas Systems for Laboratory and Healthcare Facilities22 66 00Chemical-Waste Systems for Laboratory and Healthcare Facilities22 67 00Processed Water Systems for Laboratory and Healthcare Facilities