The JF-WA1 Hydro-Light ASTM Test Method D3240 is now listed in ATA103, aka Standard for Jet Fuel Quality Control at Airports. The Hydro-Light is used to determine the amount of free water in jet fuel making it essential for flight safety.
You can view the ATA103 here: http://www.ataspec.org/index.php?main_page=index&cPath=12
D-2 inc also upgraded the JF-WA1 with new verification pads. See the video below.
JF-WA1
ASTM D3240
JF-WA1-N
JF-WA1-AF
US Navy NSN 6640-01-642-9285
US Air Force NSN 6640-01-680-6773
ATA103: Spec 103: Standard for Jet Fuel Quality Control at Airports