2.1 weighing (qravimetric analysis) this type of analysis done by the object model to destroy the substance ที่ต้องการทราบ volume and weigh to weight. Examples of objects falling, such as soil moisture, determination of organic matter by means of burn, etc., or may analyze the object model to extract of wanting to know the quantity is in the form of melt and precipitation. Substance and the weigh to weight, such as the soil to bite Ca and then settling Ca solution ammonium oxalate then the sediment Calcium oxalate. To weigh, it will know the quantity Ca in soil, etc.The band 2.2 volume or Tai เตรต (volumetric analysis or titrimetric analysis) this type of analysis done by the object, for example changing in the form of the solution. Or extract to know the amount of out in the form of the solution. The solution has to react with aqueous standard chemical reaction equations and the optimum battery volume should treasure as follows.
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