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.
On the left hand side of the Texas flag, is a vertical stripe of blue bearing a 5 pointed white star in its center. The. ratio of the width to the length of the flag is 2:3. The description of the flag has to adhere to the exact proportions specified by the state.