Need polyamide tlc plates to sep dansyl AA - need vendor

[Malaleuca]

Would appreciate info on where to locate polyamide chromatography plates
for separation of dansyl amino acids.  Used to be called chen ching
polyamide plates, double sided caproic acid polymer on flexible substrate
used to be available from multiple sources.  Have tried S+S, EM Sciences,
Sigma, Pierce... trying Gallard Schlesinger

Thx
M Gallagher