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 flag can be worn on the right or left shoulder, depending on the uniform. Military regulation requires that the flag's stars always be on the forward-facing side ... Non-service members can wear their patches on either shoulder as well, but the stars can face the back of the shoulder or put on the right side..