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 of the United States of America is a national flag. It represents the freedom of the United States. The flag of the United States has 7 red stripes and 6 white stripes. These 13 stripes stand for the original thirteen colonies. The flag also has a blue canton, a rectangle in the top left corner. The canton has one white star for every state.