2nd time finding a shade/color difference between old & new batches of Testor's acrylics

Tools, Techniques, and Reference Materials Painting and airbrushing
1

I recently used Testor’s acrylic Gull grey & discoved a difference of the shade/color between a new & old batch of the same FS number. I thoroughly stir the paint before airbrushing. Has anyone else ever run into this situation???

F-100 John

2

I start out with the assumption no two bottles of paint will be exact matches, regardless of identical paint name/brand. If I think a bottle doesn’t have enough paint in it to finish a job, I won’t even use it for the job. I have poured a nearly empty bottle of the same paint name/brand into another bottle of the same and mixed them together really well before starting, though.

3

I find it more of a problem when buying the bottles at widely different times. Usually if I buy them at the same time they match, but of course that is still not a guarantee they are from the same branch, depending on when the bottles got loaded into the rack.