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              4-Propyl-4 '-Cyanophenylcyclohexane 50g
              Activated carbon tube tetrachloroethylene control standard sample
              Composite electrode replenishment solution 3.3 mol/L 500ml
              Potassium fluoride standard solution 3.3 mol/L 500ml
              Fluorinated sodium standard solution
              Fluoride ion standard solution
              Phenolphthalein standard liquid
              Aluminum cleaning agent 25kg/barrel
              Quinolybdenum Caraginone 100ml
              Perlin's reagent I 250ml
              Perlin's reagent Ⅱ 250ml
              Potassium hydroxide-methanol standard solution
              Potassium hydroxide isopropanol standard solution
              Potassium hydroxide-ethanol standard solution
              Rhodamine B dye solution Barrel

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