pH Storage Bottle "Lid"

We have long advocated using a nickel under the cap of the storage solution container when using our pH sensors. The nickel acts as a lid to prevent spills, should the container be knocked over. However, in 2024 the pH sensor manufacturer of the storage containers changed the design slightly, so that nickels are now too thick to use as a lid. This is a 3D printable “thin nickel” to serve the same purpose.