Sample ID:
PK12030
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Origin:
Vegetable
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Chemical Information:
Produced from the tannic acid of oak bark in a reaction with iron salt
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Sample Type:
Reference material
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Description:
Powder sample (0-120 µ)
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History of use:
Since antiquity
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Sample Source:
Kremer Pigments
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Alternative names:
Ink Stone
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Material Class:
Natural organic dyes and pigments
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Acquisition Conditions:
Current intensity: 10.60 µA
Tube voltage: 40 kV Analysis time: 300 s No filtering, air atmosphere |