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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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