SSRL GAS Ordering
Orders for gases and cryogenics will be charged to your user account. With the exception of liquid nitrogen, all gases should be ordered in advance of your arrival on site. Please complete this form at least 2 weeks prior to your scheduled beam time if ordering standard gases, and 3 weeks for specialty gases. For confirmation of order, contact Milo Lewis at 650-926-2091.

SSRL supplies liquid nitrogen at no charge to users. The main filling station is located in the Bldg. 131 Annex. There is also a smaller tank for filling small dewars. When handling liquid nitrogen, please follow the posted instructions carefully and wear the safety gloves and glasses that have been provided for your use.
Requestor: Email:
Institution: Spokesperson:
       Proposal#:     Beam line:     User Account:     Date Required:
Liquid Helium: SSRL has a contract for the delivery of LHe. Under this contract 100 liters is the standard dewar size. The cost is $619.00 and delivery time is two days. There is no rental fee for the dewar.

Note: If you are ordering LHe for a SMB-XAS cryostat, do not order more than one 100 liter dewar before you arrive at SSRL. Several cryostats have new transfer lines with reduced LHe consumption (~1/2) and refunds for unused LHe dewars cannot be guaranteed. Additional LHe dewars can be ordered as-needed while you are on-line.
Specify quantity of 100 liter cylinders required:  

Please be aware LHe dewars have a demurrage rate assessed seven days after delivery to SSRL.
Standard Gases: Orders for standard gases must be placed 2 weeks prior to arrival. Charges for theses gases will be applied to your user account.

Specify cylinder quantity
      Argon     Carbon Monoxide      Helium      Nitrogen      Oxygen
(The SLAC standard is 99.5% industrial grade, standard cylinder size (except for carbon monoxide) is between 175-200 SCF -depending on the gas. Carbon monoxide comes in 1.75 SCF lecture bottles. If you require greater purity gas or a cylinder size outside the standard range, please use the fields for specialty gas orders below.)
Specialty Gases: Specialty gases must be ordered 3 weeks prior to your arrival. Analyzed gas orders take an additional two days. Charges for theses gases will be applied to your user account. Specialty gases cannot be returned for credit to your account.
Gas:  Balance:  Grade:  Analyzed?   Yes    No  No. Cylinders:
Dewars: SSRL has a small supply of portable dewars that can be borrowed from the stockroom. Macromolecular Crystallography users wishing to ship dewars to SSRL should complete the "Shipping Dewars to SSRL Form to help ensure that the dewar is delivered to the correct beam line and refilled if necessary.
Comments:

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Last Updated: 12 OCT 2007
Content Owner: C. Knotts
Page Editor: L. Dunn