Includes
Fuel Gases.

Excludes
Military Chemical Gases; Medical Gases (for medical gases use code 6835); Empty Gas Cylinders and their caps, valves, and valve spare parts.

Possible NAICS Codes
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
325120 – Industrial Gas Manufacturing
211130 – Natural Gas Extraction
324110 – Petroleum Refineries
221210 – Natural Gas Distribution

Includes
Liquid chemicals designed exclusively for use as propellant fuels and oxidizers; Liquid Propellants, Bulk; Liquid Propellants, predetermined to specific quantity and quality, packaged in reusable containers

Excludes
Multiple-use chemicals, such as Nitrogen, Technical; Ammonia, Technical; Furfuryl Alcohol, Technical; Aniline, Technical, Solid Propellants; Liquid Propellants, encased in consumable containers for insertion into missile propulsion systems as integral parts.

Notes
This class includes liquid propellants with more than 50% or higher chemical content.

Possible NAICS Codes
325120 – Industrial Gas Manufacturing
325180 – Other Basic Inorganic Chemical Manufacturing

Includes
Medical gases are used for medical treatments and for use in the human body. Medical gas cylinders contain high purity gas; no other types of gases are allowed in the cylinder. Gases that make up the medical gas category are medical grades of carbon dioxide, helium, nitrogen, nitrous oxide, oxygen, argon, and other miscellaneous medical gases. This definition also includes bulk oxygen that hospital use to dispense throughout the hospital via the piped in distribution system to the bedside.

Possible NAICS Codes
325120 – Industrial Gas Manufacturing
325412 – Pharmaceutical Preparation Manufacturing
221210 – Natural Gas Distribution

Includes
Naphtha Solvents; Water Softening Compounds; Tanning Materials, Natural or Synthetic; Dextrines and Starches; Inedible Gelatins; Acetone; Propellant Chemicals, Bulk not specialized solely for Guided Missile Use.

Excludes
Medicinal Chemicals; Gases; Foundry Dextrines; Radiographic and photographic Chemicals; In Vitro Diagnostic Substances and Reagents.

Possible NAICS Codes
324191 – Petroleum Lubricating Oil and Grease Manufacturing
325998 – All Other Miscellaneous Chemical Product and Preparation Manufacturing
325611 – Soap and Other Detergent Manufacturing
325199 – All Other Basic Organic Chemical Manufacturing
325180 – Other Basic Inorganic Chemical Manufacturing
325612 – Polish and Other Sanitation Good Manufacturing
325910 – Printing Ink Manufacturing

Excludes
filled gas cylinders and items related to gaseous and liquefied gaseous dispensing systems, both mobile and installed. All components of installed gas dispensing systems are classified by "application" or "function" with the end equipment for which designed.

Notes
This class includes empty commercial and industrial gas cylinders and their caps, valves, and valve spare parts.

Possible NAICS Codes
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
332420 – Metal Tank (Heavy Gauge) Manufacturing
325120 – Industrial Gas Manufacturing

Includes
Antifogging Compounds; Wetting Agents; Etching and Fountain Solutions for Lithographing; Blanket Repair Solutions for Lithographing; Antifreeze.

Possible NAICS Codes
324191 – Petroleum Lubricating Oil and Grease Manufacturing
325510 – Paint and Coating Manufacturing
325998 – All Other Miscellaneous Chemical Product and Preparation Manufacturing

Includes
Anesthesia Apparatus; Blood Transfusion Apparatus; Oxygen Therapy Apparatus; Respirators; Orthopedic Supplies; Arch Supports; Clinical Thermometers; Sutures; Hearing Aids; Veterinary Equipment, Endoscopes, Fiber Optic.

Excludes
Ophthalmic Instruments, Equipment, and Supplies; Non-Medical Endoscopes.

Possible NAICS Codes
423450 – Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers
339113 – Surgical Appliance and Supplies Manufacturing
325411 – Medicinal and Botanical Manufacturing
339112 – Surgical and Medical Instrument Manufacturing

Includes
Laboratory Glassware; Laboratory Funnels; Laboratory Furnaces; Glass Beads; Laboratory White Sand; Litmus Paper; Paper Filters; Insect Transfixion Pins; Laboratory Glass Wool; Laboratory Furniture, except Dental Laboratory.

Excludes
Instruments covered by other classes in group 66; Dental Laboratory Equipment; Laboratory Scales and Balances; In Vitro Diagnostic Substances and Reagents.

Possible NAICS Codes
423450 – Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers
339999 – All Other Miscellaneous Manufacturing
334516 – Analytical Laboratory Instrument Manufacturing

Description
Lease or Rental of Equipment: Miscellaneous

Possible NAICS Codes
532490 – Other Commercial and Industrial Machinery and Equipment Rental and Leasing
532412 – Construction, Mining, and Forestry Machinery and Equipment Rental and Leasing
532120 – Truck, Utility Trailer, and RV (Recreational Vehicle) Rental and Leasing
562991 – Septic Tank and Related Services
532112 – Passenger Car Leasing
532289 – All Other Consumer Goods Rental
561210 – Facilities Support Services
532111 – Passenger Car Rental
238990 – All Other Specialty Trade Contractors
333310 – Commercial and Service Industry Machinery Manufacturing

Includes
Liquefied gaseous storage tanks, mounted on a common base with, or integral to, gas generating equipment included in this class. Also includes those liquefied gaseous storage tanks, either trailer mounted or skid mounted, used to store liquefied gaseous products until needed. Excluded from this class are those storage tanks designed to be used as an integral part of guided missile propellant servicing trailers, rocket power plants or test stations, and aircraft oxygen converters which are classified as specified by the indexes and structure of the FSC.

Excludes
Meteorological Equipment.

Notes
Included in this class are gaseous dispensing systems, both mobile and installed.

Possible NAICS Codes
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
333914 – Measuring, Dispensing, and Other Pumping Equipment Manufacturing
325120 – Industrial Gas Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
333912 – Air and Gas Compressor Manufacturing
333996 – Fluid Power Pump and Motor Manufacturing
333613 – Mechanical Power Transmission Equipment Manufacturing
332420 – Metal Tank (Heavy Gauge) Manufacturing
221210 – Natural Gas Distribution

Includes
Light Burner Fuels; Diesel Fuels, Kerosene; Military Specification Type Residuals; Special and Heavy Grade Turbine Vessel Propulsion Fuels; Federal Specification Heavy Burner Fuels; Bunker "C" Commercial Grade Fuel; Heavy Fuel and other Black (Boiler Type) Fuels; Illuminating Oils.

Possible NAICS Codes
324110 – Petroleum Refineries
457210 – Fuel Dealers
324191 – Petroleum Lubricating Oil and Grease Manufacturing
324199 – All Other Petroleum and Coal Products Manufacturing
213112 – Support Activities for Oil and Gas Operations
424720 – Petroleum and Petroleum Products Merchant Wholesalers (except Bulk Stations and Terminals)
333132 – Oil and Gas Field Machinery and Equipment Manufacturing

Description
Other Medical Services

Possible NAICS Codes
622110 – General Medical and Surgical Hospitals
561320 – Temporary Help Services
621111 – Offices of Physicians (except Mental Health Specialists)
621399 – Offices of All Other Miscellaneous Health Practitioners
532283 – Home Health Equipment Rental
621910 – Ambulance Services
621999 – All Other Miscellaneous Ambulatory Health Care Services
621112 – Offices of Physicians, Mental Health Specialists
621498 – All Other Outpatient Care Centers
621511 – Medical Laboratories

Includes
Liquid Level Float Instruments; Revolution Counters; Speedometers; Rotation Measuring Instruments and Apparatus; Oxygen Flow Indicators; Tachometers, including Engine Tachometers.

Excludes
Combination Instruments; (FSC 6695); Meteorological Instruments (FSC 6660); and Automatic Control Valves (FSG 48).

Possible NAICS Codes
334519 – Other Measuring and Controlling Device Manufacturing
334514 – Totalizing Fluid Meter and Counting Device Manufacturing
334513 – Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables
333618 – Other Engine Equipment Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
334610 – Manufacturing and Reproducing Magnetic and Optical Media
333120 – Construction Machinery Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
424420 – Packaged Frozen Food Merchant Wholesalers

Description
Pulmonary Services

Possible NAICS Codes
532283 – Home Health Equipment Rental
561320 – Temporary Help Services
325120 – Industrial Gas Manufacturing
621111 – Offices of Physicians (except Mental Health Specialists)
621610 – Home Health Care Services
621399 – Offices of All Other Miscellaneous Health Practitioners
611310 – Colleges, Universities, and Professional Schools
621991 – Blood and Organ Banks
622110 – General Medical and Surgical Hospitals
621511 – Medical Laboratories

Includes
All Aviation Gasoline; JP-1, 3, 4, and 5 Jet Fuel; Combat Vehicle and Automotive Gasoline (all types and grades); Liquid Propellants, Bulk; Liquid Propellants, predetermined to specify quantity and quality, packaged in reusable containers.

Excludes
Solid Propellants; Liquid Propellants, encased in consumable containers, for insertion into missile propulsion systems as integral parts.

Notes
This class includes liquid propellants with more than 50% or higher petroleum content.

Possible NAICS Codes
324110 – Petroleum Refineries
457210 – Fuel Dealers