<html><head></head><body><div class="yahoo-style-wrap" style="font-family:times new roman, new york, times, serif;font-size:13px;"><div dir="ltr" data-setdir="false"><div><p class="ydp8b0c7ddbMsoNormal">Hi everyone!</p>
<div>We recently tried to make freeze substitution cocktail
consisting of 1% osmium tetroxide, 0.1% uranyl acetate and 5% water but observed
that the mixture turned slightly cloudy within 1-2 minutes. We tried to see if the precipitation would occur in the absence of osmium tetroxide, and we observed some cloudiness too after mixing uranyl acetate solution in water with pure acetone.</div>
<p class="ydp8b0c7ddbMsoNormal">Just wondering if anyone has encountered similar problem and
if so, would appreciate some tips on how to overcome this problem.</p>
<p class="ydp8b0c7ddbMsoNormal">Thank you!</p>
<p class="ydp8b0c7ddbMsoNormal"> </p>
<p class="ydp8b0c7ddbMsoNormal">Best regards,</p>
<p class="ydp8b0c7ddbMsoNormal">Qiaohui</p></div><br></div></div></body></html>