An E1918A methodology is being proposed as an annex to ASTM E1918 because it offers the advantage of a smaller sample size. ASTM E1918 requires a 4-meter by 4-meter (about 13 feet by 13 feet) sample size (or 4-meter diameter, if the sample is circular). The E1918A methodology sample size is more manageable at 1-meter by 1-meter (or 1-meter diameter if round). The E1918A methodology also appears to be less susceptible shadow error caused by the arm of the measurement device and error caused by the background (i.e., what is surrounding the sample). Several clarifying edits to E1918 are also needed.
Date Initiated: 01-09-2020
Technical Contact: Mischa Egolf
Item: 001
Ballot: D08.18 (20-01)
Status: Will Reballot Item
Item: 005
Ballot: D08 (21-01)
Status: Negative Votes Need Resolution
Item: 006
Ballot: D08 (21-01)
Status: Ballot Item Approved