A storage container for all liquid black&white and color developers.
Extends developer life by eliminating destructive air. Made of heavy
wall polyethylene, Air-Evac is air proof and durable. As developer is
used, compress Air-Evac until liquid is level with the top of the
container opening and screw the cap on. Air-Evac will remain in this
position, locking out air until you are ready to use again. When empty,
Air-Evac can be expanded back to its full gallon size to be used over
and over again. Plastic-coated, wipe-off label.