The Arista E6 kit I used within the last year used a chemical re-exposure step
blix came in 3 parts/bottles
it worked well for me and they just discontinued the Kodak E6 5L Single Use Kits
I haven't teated archival standard but I did but a tape a chrome on my window that receives direct afternoon sun.
It's been there for almost a year and although Im sure there is some fading it's not apparent ? ? ?