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      Product name Specifications Packing Unit price / yuan
      Dichloroethylene standard solution 100mg/L 2ml
      4.6-Dinitroo-cresol standard solution CP 100g
      3.5 dinitrosalicylic acid 1ug/ml 5ml
      Ferric chloride-cobalt chloride colorimetric solution 500ml
      Potassium hydroxide-methanol standard solution 50ml
      Hydrogen 50ml
      Potassium hydroxide-ethanol standard solution 50ml
      Octadecylamine standard solution 50ml
      3.3. 5.5-Tetramethylbenzidine standard solution 50ml
      Trichlorobenzene standard solution 50ml
      2.4. 6-Trichlorophenol standard solution 5ml
      Trichloroacetic acid standard solution 500ml
      Petroleum phenol standard liquid 50ml
      Saccharin sodium standard solution 50ml
      TVOC standard liquid 5ml
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