Archived posting to the Leica Users Group, 2002/06/22
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]There are two kinds of "Hypo", anhydrous and, more commonly, crystalline. Use 64% of the anhydrous salt as a substitute for the crystalline form. The crystalline form is endothermic and will cool the water dramatically when mixing. Always start with water at 90°F/32°C when mixing the crystalline form. Page 38, Darkroom Cookbook. Jim At 03:41 PM 6/22/2002 -0700, Mark Rabiner wrote: >D Khong wrote: > > > > Friends > > > > What is the weight of anhydrous sodium thiosulphate which is equivalent to > > 100 grams of the "hypo" (pentahydrate) variety? Thanks. > > > > Dan K. > > > > >Explain this to us D, because I was not aware there were two kinds of "hypo" > >I knew rapid fix was ammonium thiosulfate, not sodium thiosulfate. > >But i didn't know about two kind sodium. > >Your talking about the stuff that you can mix by adding a cup to a >gallon of water i assume. Something like that. - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html