Purchasing and Business Services Manual (PUR)

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Effective: 2/1/1992

Revised: 11/1/2020

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PUR 223: Gas Cylinders and Gas Products

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To describe the methods for procuring gas products and for paying monthly rental charges so that:

  1. departments receive an uninterrupted supply of gas products
  2. gas products are handled in accordance with safety regulations set forth by the Occupational Safety and Health Administration, the Compressed Gas Association, and the Arizona Department of Transportation


  3. the university complies with the Arizona Precursor Chemical Law (Arizona Revised Statutes § 13–3404)

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University policy

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All gas cylinders and compressed gas purchases must be made through Materials Management/Gas Services.

All cylinders, except disposable and exchange cylinders, have a monthly rental fee due on the 25th of each month. Unless other arrangements have been made with Gas Services, the cylinder rental fee will be charged to the cost center provided at the point of sale. Some specialty gases have higher rental fees. Gas Services will notify the purchaser prior to the purchase if additional fees apply.

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Liquid Nitrogen

Liquid nitrogen is available through Gas Services’ automated dispensing system. Access cards, keys, and further information may be obtained by contacting Gas Services at 480/965–6546.

Dry Ice

Dry ice is available by contacting Gas Services at 480/965–6546.

Other Conditions

Material Safety Data Sheets are available upon request through Gas Services.

Compressed gas users are responsible for the safe handling of gases and equipment.

There is a $10 replacement fee for cylinders returned without their protective safety caps.

If the cost center for the cylinder rental needs to be changed, please notify Gas Services so that the account information can be updated in the cylinder rental inventory database immediately.

Monthly rental activity reports are available upon request.

To place orders or receive additional information, please call Gas Services at 480/965–6546.

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