My (old) Lillie gives methylene green (CI 52020) as a thiazin dye in the
same family as thionin, azure A and toluidine blue. May I suggest you adapt
a formulation for one or more of these? My regards to the good people of
Szeged, its a while since I was there.
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Jim Elsam
HTEQA Services
7 The Elms, Ringmer
Sussex, UK, BN8 5EZ
Tel: +44 (0)1273 814030
Fax: +44 (0)1273 813290
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