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      Product name Specifications Packing Unit price / yuan
      Potassium iodate-potassium iodide standard solution
      P-nitrobenzoic acid standard solution
      P-nitrophenol standard solution
      Nitrogen oxide standard liquid
      Diantipyrine methane standard solution
      Barium diphenylamine sulfonate saturated solution
      Anthracene standard solution 100ml
      Phenanthroline standard solution 100ml
      2.4-Xylenol standard solution 100ml
      2.4-Dichlorophenol standard liquid 100ml
      Cobalt dichloride standard solution 100ml
      Sodium oleate standard solution
      Sodium acetate-glacial acetic acid 0.1 mol/L 500ml
      Hydroxylamine hydrochloride standard solution
      Lead acetate standard solution 0.1 mol/L 500ml
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