so trying to have clean white on sterling (champleve style) but every opaque white turns pink (a bit of green where sterling and enamel meet, and it spreads from there as pink) especially 2nd and later firings.
Sterling depletion guilded 7 times with torch, 5mins in strong hot citric acid in ultrasonic in between, lastly even tried degreasing salts with electroplating equipment. Looks fine and white.
Enamels, lead bearing and lead free from Milton Bridge, WG Ball and Thompson tried.
Best whites are of course on trivet (stainless steel) where some enamel has dropped
Temperature as recommended around 790C / 1450 F, 1-2 minutes. Not mush color problem at orange peel level.
Cannot use fine silver due softness… Any hints?