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.
Best Answer: Some people have gotten the answer half right. The flag, when worn on the right sleeve, has the union (the field of stars) at the top right. This is to show the flag as it would appear if it were on a flagpole with the wind coming from the right. This is to represent the forward motion of the soldier.