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.
The Code and the general. According to the U.S. Code governing the American flag, the flag should be displayed with the union, or the canton, or the blue part with the stars, to the flag's own right; that is, to the left of whoever is looking at it.