Example of sample surface image.
Sample Labeling and Storage Policy
To aid in the positive identification of samples prepared
for the ion microprobe, to guard against their loss, and to aid us in searches for wayward
samples, we have adopted the following policy:
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All samples prepared for ion probe analysis must be permanently
labeled in an unambiguous fashion. At a minimum, the label
must include the name of the investigator and a unique sample
name. It is also useful to mark an orientation arrow that
corresponds to the + y direction of the sample holder to
facilitate reproducible positioning of the sample. Marking
samples by diamond scribing on the back of the mount is rapid and
effective. Note that any form of ink marking is unreliable
since the potential future use of solvents may remove even
permanent ink. A more elaborate method of labeling the
sample involves placement of a printed label within the epoxy
resin as it is poured. It is most convenient if the
internal label is visible from the side of the mount since both
the top and bottom of the mount are generally abraded during the
course of sample preparation (and the upper surface coated with
Au or C). A 3 inch long by 0.2 inch high label can be
concentrically arranged within the mount so that it will be
easily viewed from the side.
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When not in use, samples must be stored in appropriate containers
that are labeled with (at a minimum) the name of the investigator
and the name of the sample.
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Long-term storage of samples in the laboratory (i.e., for a
period of time that exceeds a given analysis session) is not permitted.
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Prior to loading a sample into the ims 1270, an entry
must be made in
the ims 1270 sample log. This log
is permanently housed with the laboratory (on the table of the
ims1270 console) and may not be removed for any reason.
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Prior to loading a sample into the ims
1270, an image of
the sample surface(printed out on 8.5 × 11" paper and
suitably punched for a three-ring binder) must be inserted in the
ims 1270 sample image repository. This image must be labeled with
(at a minimum) the name of the investigator, a unique sample
name, and an orientation arrow. This repository of sample
images is permanently housed with the laboratory (on the shelves
above the PC) and neither it (nor its contents) may not be
removed for any reason.