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 TODAY. The flag of the United States of America has 13 horizontal stripes--7 red and 6 white--the red and white stripes alternating and a union which consists of white stars of 5 points on a blue field placed in the upper quarter next to the staff and extending to the lower edge of the fourth red stripe from the top.