I've used and enjoyed Kohlrausch's solution for many a year, but now I have
and need to make it. I've never done it before. The refs say dissolve
3% PtCl2 and 0.25% PbAc in 0.025N HCl. The PtCl2 sank to the bottom and
seem at all interested in dissolving. I then went to the Merrick Index, which
states that PtCl2 is insol. in water, which I had just empirically proved.
I'm a tad confused. If you are familliar with Kohlrausch's could you drop me
line clarifying how it is made?
Thanks very much.
I don't know what Kohlrausch's solution is used for, but I have a recipe for
platinum plating solution that may work for you. I use it for plating
microelectrodes for extracellular recording from brain tissue.
Platinum plating solution
A. 1 g H2PtCl6.H2O (hexachloroplatinic acid hexahydrate, FW 517.92)
100 ml H2O
~0.05 mg lead citrate
B. Add 25 mg agarose to 100 ml H2O
Heat to about 70? C to dissolve
Add Solution A and enough water to make 250 ml
This solution is highly stable when kept in the dark, especially if you keep
it in the refrigerator. Good luck.
Department of Physiology & Biophysics
State University of New York
Buffalo, NY 14214
email: sudin at ubmedb.buffalo.edu