Specifications include, but are not limited to: The following gases are required: Liquid Argon UN1951 UHP 99.999, volume 180-350, one tank delivered every other week or when required, two are kept on site. Compressed Air UN1002, Ultra Zero, 280cf, one tank delivered monthly or when required, two are kept on site. Helium UN1046, UHP, 80cf or 280cf, one tank replaced for the fiscal year or when required, one is kept on site. High Pressure Argon UHP 99.999, AR UHP 300, 331cf cylinder; one tank as needed to supplement Liquid Argon, two are kept on site as needed. Please note, once a bid/quote is accepted, the invoices must exactly reflect the original quote for the duration of the service, or the service must be sent out to bid again. Bids may also be requested when use exceeds expected budget. All fees (Cost of gas per cylinder + Rental/lease cost per day + Cost per delivery + Haz-Mat cost per delivery) must be included.