William A. Hess, CAPT (ret.) U.S. Public Health Service

Good afternoon, I concur with Gunther’s proposal. Thanks, Bill ***@***.*** From: Gunther Schadow ***@***.***> Sent: Tuesday, July 25, 2023 4:25 PM To: ucum-org/ucum ***@***.***> Cc: Hess, William A ***@***.***>; Assign...

Citations where the federal government and private sector have used parts per quadrillion (ppq or PPQ): DEPARTMENT OF HEALTH AND HUMAN SERVICES, Food and Drug Administration, 21 CFR Part 176...

Tim, This one has the same type of issues as #209. I don't have any record of the UCUM Advisory Board already discussing this, but it is possible that we...

Tim, All three of these units: [Shore_A_scale] [Shore_D_scale] [Shore_OO_scale] were accepted as UCUM units of measure by the UCUM Board Meeting on 3/23/2022 according to my notes and according to...

The FDA relies on Shore hardness measurements in a variety of regulated‐product contexts wherever the mechanical resilience, flexibility, or rigidity of a polymeric or elastomeric material can affect safety, performance,...

Tim, I don't have any record of the UCUM Advisory Board already discussing this, but it is possible that we did. Perhaps April could check past meeting summaries. FDA still...

A point of clarification: According to ChatGPT o3, EPANET 2.x codes "acre‑feet per day” and "acre-foot per day" as AFD, not ACD. See https://19january2021snapshot.epa.gov/sites/static/files/2020-05/documents/epanet_userss_manual_2.2.0.pdf?utm_source=chatgpt.com

I recommend against the use of the acronym, "API" for several reasons. First and foremost, "API" stands for the "American Petroleum Institute" (https://en.wikipedia.org/wiki/American_Petroleum_Institute), which, if incorporated into UCUM, implies a...

So noted. I appreciate your perspective. Below is a AI-generated detailed summary of the key CFR references where “degree API” appears or is used as a basis for calculations and...

Agree!