Andrey,
         Don't you just love the ambiguity of "shorter" versus "longer" 
time periods?  I haven't used the Neu 9100 but, having used the"old" 9100, 
I have found that I can leave the destabilized monomer in the refrigerator 
at 4C for a year.  I haven't tried freezing, but I would think that would 
hold indefinitely.  The thing to remember is that both frozen  and 
refrigerated solutions should be allowed to come to room temp before using 
as the solutions will have a condensate on the inside of the jar that 
doesn't mix well with the monomer.
         Also, I filter my solutions and reuse as needed;however for the 
final infiltration and embedding solution, I always use fresh monomer.  Any 
remaining fresh monomer can be filtered and stored as "used"solution and 
can be used for base layers and "first-step" infiltration solutions thus 
recycling the solution with little waste.
         Good Luck!
         Linda

Linda Jenkins, HT
Clemson University
Dept. of Bioengineering
Clemson, SC 29634-0905
864.656.5553
http://www.ces.clemson.edu/bio/research/histo.htm


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