Thanks Greg for the original filters specifications. I have some Thomas Duplex for sale so I will redo the original settings. The guy lab who sold me this stock use the Rosco #22 (deep amber) and #25 (red) and I have some precut ones.
Originally Posted by Greg Davis
Your Green one is probably the DUX set as described in the Thomas instructions:
X-RAY PROCESSING (Type DUX)I think I have one too, second set in the picture.
For X-Ray Materials, the main housing should contain the green-edged filters
and the vanes the red-edged ones. Since medical and industrial X-Ray materials
vary over an exceptionally wide range of sensitivity and spectral response,
preliminary tests should be made with each material being used. For unusual
situations, upon consultation, our technical staff may be able to supply special