Rates:
All Effective Jan. 1, 2023
Liquid helium;
Physics Users; $1.74 per Liquid Liter
CLAS Users; $3.41 per Liquid Liter
non-CLAS Users; $4.62 per Liquid Liter
As metered by the difference between the Helium Level Detectors' BEGIN and END Transfer readings.
Lab users should enter BEGIN just prior to the transport dewar leaving the nearest storage area and enter
END in the Lab just prior to returning the dewar back to that storage area.
Corrections are made to erroneous data entries.
Unreturned Helium (Lost);
All Users; $21.00 per Liquid Liter equivalent
Lost helium is calculated by:
(Helium used - (Helium recovered + Helium in cryostat at the end of the
billing month - the Helium in the cryostat at the beginning of the
billing month))
Helium recovered is metered directly at the piping exit point of the lab.
Liquid Nitrogen;
$0.21 per Liquid Liter
Gaseous Nitrogen is billed at the equivalent Liquid rate