☑Preparation and concentration comparison of acid and base standard solution ☑Calibration of acid and base standard solution ☑Determination of NaOH and Na2CO3 in mixed alkali sample ☑Determination of molar mass of organic acids ☑Determination of acetic acid in edible vinegar ☑Determination of calcium carbonate in eggshells ☑Additivity test of absorbance ☑The Determination of trace Cr (VI) and Mn (VII) in water at the same time ☑Preparation and calibration of EDTA standard solution ☑Determination of calcium and magnesium ion content and total hardness of water ☑Preparation and calibration of sodium thiosulfate standard solution ☑Determination of glucose content (indirect iodimetry) ☑Determination of iron content by phenanthroline spectrophotometry ☑Determination of sulfur in soluble sulfates |