| CPC G01N 27/64 (2013.01) [H01J 49/105 (2013.01); H01J 49/40 (2013.01)] | 22 Claims |

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1. A standard sample film for use in laser ablation inductively coupled plasma mass spectrometry, comprising:
a polymer; and
a metal element,
wherein a maximum height difference in film thickness of the standard sample film is 0.50 μm or less.
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