From what I understand, the durability between the two is quite different. The PTFE membranes are used for the filtration of organic solvents where as the PVDF membranes are generally for low protein binding. Furthermore the PTFE membranes typically require a polyethylene support.
When the U.S. and Washington State flags are flown from a cross staff, the U.S. flag flies from the peak and the Washington State flag occupies the position on the right end of the cross staff (the observer's left). Additional Information on Display US Flags.
Above other flags - Hang the flag above any other flag on the same pole. Other flags, separate poles - Hang all flags on equal poles. Hang the U.S. flag on its own right, hoist it first and lower it last. In a window - Hang the flag vertically with the stars to the left of anyone looking at it from the street. Half-mast - This is a sign of mourning. Raise the flag to the top of the pole then lower it to the half way point.