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 is the symbol of our nation. The. union, white stars on a field of blue, is the honor point of the flag. The union of the flag, and the flag itself when in company with. other flags, is always given the honor position; for example, the. marching right, the flagâs own right or an observerâs left facing the. flag.