Orwo NP20 & NP15 6.5cmx9cm Cut Film

That makes it 36.3% TEA. The print industry version probably had even more of it (or was a higher concentration all around), as I remember it congealing in our store room well above freezing point.
 
OK Well I will start with Microphen as that was recommended by the seller of the oudated Orwo. I have two liters of Microphen in my darkroom right now.
 
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