Transcription of Sampling and mixing - LTH
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Sampling and mixing - LTH
11L U N D U N I V E R S I T YSampling and mixing2L U N D U N I V E R S I T YMixtures Type of mixtures Positive mixtures- spontaneously homogenously - solutions Negative mixtures-Spontaneously separate-emulsions Neutral mixtures- neutral -powders Neutral mixtures Homogeneity depends on handling and process conditions Type of neutral mixtures Random mix Perfect mix Ordered mix23L U N D U N I V E R S I T YSampling of powders Why do we take samples? How many samples? Where and with what technique? How much?4L U N D U N I V E R S I T YWhy do we take samples? To detect variation validate processes Product quality variations To describe the sample - gross sample generalprov To control processes35L U N D U N I V E R S I T YHow many samples?
1 1 L U N D UN IVE R S I T Y Sampling and mixing 2 L U N D UN IVE R S I T Y Mixtures • Type of mixtures – Positive mixtures- spontaneously homogenously - solutions – Negative mixtures-Spontaneously separate-emulsions – Neutral mixtures- neutral -powders • Neutral mixtures – Homogeneity depends on handling and process conditions – Type of neutral mixtures
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