Chris Y.,

We normally freeze manure samples to reduce microbial action and reduce
volatile loss of ammonia.
We use commercial freezers at about -15 to -20 C.  To thoroughly reduce
microbial and enzyme action
about -80 C would work better.

G. Martin




                      Chris Yarnes
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                      Sent by: Stable          Subject:  Stable Iostopes in Scat
                      Isotope
                      Geochemistry
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                      08/19/03 10:36 AM
                      Please respond to
                      Stable Isotope
                      Geochemistry






Could someone advise me on the proper storage and handling of scat for
stable isotope analysis and any other possible analytical issues involved
with running scat, including assumtions in diet analysis?  Broad question,
I know, but any help would be most appreciated.

Chris Yarnes
Research Coordinator
Laboratory for Environmental Chemistry
Institute for Natural Resource Analysis and Management
Las Cruces, NM 88003
505-646-4532
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