See the link at the bottom of this article to view or download the Uncertainty Analysis for Flow Measured by molbloc-L and molbloc-S Mass Flow Transfer Standards.
The Uncertainty Analysis can also be downloaded from the Fluke Calibration web site, but requires login to that site (very easy to do from the site, press the Login link). Here's the link to that web page,
Covers these model molbllocs with molbox1, molbox1+ or molbox RFM flow terminals:
molbloc-L (laminar molbloc)
molbloc-S (sonic molbloc)