🧪 FBI testing of specific stain swatches slide (Defense 1257-N)
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FBI testing of specific stain swatches slide (Defense 1257-N)

Demonstrative slide related to the FBI's testing of specific stain swatches, introduced as part of the EDTA educational slide series with Dr. Rieders.

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How this item was marked across the four trials. The same physical item often gets different numbers in the criminal and civil trials.

Defense 1257-N

Source proceedings (1)

Every proceeding where this item was discussed. Click through to the transcript.

Criminal trial (1)

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Transcript pages from Agent Roger Martz's criminal trial testimony, referenced in civil proceedings both as a foundational exhibit (Defense Exhibit 1264 in civil, July 25 page 38649) and for impeachment purposes comparing his statements at pages 38641 and 38…
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Q206 sock stain full daughter ion scan, broader mass range (Defense 1259-C)
Full daughter ion scan chromatogram of the Q206 sock stain cutting spanning a broader mass range of 130–295, less focused than the standard 160/293 runs. Used both on direct examination by Rieders and on cross to probe whether the 132 ion signal rose meaning…
Q206 composite chromatogram slides (Defense 1257-Q and 1257-R)
Composite slides displaying both Q206 sock stain chromatograms together, used with Dr. Rieders for jury visualization. Defense 1257-Q shows the combined display; Defense 1257-R is the same composite with EDTA peaks highlighted.
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🔬 FBI testing of specific stain swatches slide (Defense 1257-N)
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