The following Product Service Codes (PSCs) are commonly associated with NAICS 325311, Nitrogenous Fertilizer Manufacturing

PSC 6830 Gases: Compressed and Liquefied

Products
Federal Category 5.6: Industrial Products & Services Basic Materials

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

PSC 6810 Chemicals

Products
Federal Category 5.6: Industrial Products & Services Basic Materials

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
325199 – All Other Basic Organic Chemical Manufacturing
325180 – Other Basic Inorganic Chemical Manufacturing
325611 – Soap and Other Detergent Manufacturing
325612 – Polish and Other Sanitation Good Manufacturing
325120 – Industrial Gas Manufacturing

PSC 6640 Laboratory Equipment and Supplies

Products
Federal Category 5.4: Industrial Products & Services Test & Measurement Supplies

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