پاورپوینت تعیین چربی شیر به روش ژربر (pptx) 20 اسلاید
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تعداد اسلاید: 20 اسلاید
قسمتی از متن PowerPoint (.pptx) :
تعیین چربی شیر
به روش ژربر
pH meter
Pondus hydrogenii به لاتین «وزن هیدروژن»،
A pH meter , a voltmeter with a high input impedance
measures the voltage of an electrode sensitive to the hydrogen ion concentration, relative to another electrode which exhibits a constant voltage.
Glass electrode Reference electrode Combined electrode
HIGH PURITY SALTS USED AS PRIMARY pH STANDARD
Note: The uncertainty of the tabulated pH values are estimated to be ± 0.01
Interferences:
Potential problems measuring solutions with very high or very low pH values
Measurement of pH in non-aqueous ·solutions
Matrix effects of the samples under test, e.g., samples with high solids or high organic solvent content
pH - MEASUREMENT
Calorimetry