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.
When carried in procession with other fla. the U.S. flag should be either on the. marching right (the flagâs right) or to the. front and center of the flag line. When. displayed on a float in a parade, the flag. should be hung from a staff or suspended. so it falls free.