For alkalinity determination by buret titration. Hach method 8221. 4 liter bottle 由上海植茂提供，作为HACH的合作伙伴，还提供COD试剂21258-15、COD试剂21259-15、OD试剂21258-25s

Multi-purpose sodium hydroxide solution for pH adjustment. 50 mL Self-Contained Dropping Bottle 由上海植茂提供，作为HACH的合作伙伴，还提供COD试剂21258-15、COD试剂21259-15、OD试剂21258-25s

Stabilized sodium thiosulfate titrant 由上海植茂提供，作为HACH的合作伙伴，还提供COD试剂21258-15、COD试剂21259-15、OD试剂21258-25s

Benzene. ACS Reagent Grade, CAS No. 71-43-2. C6H6, FW = 78.11. For surfactants determination, 500 mL. 由上海植茂提供，作为HACH的合作伙伴，还提供COD试剂21258-15、COD试剂21259-15、OD试剂21258-25s

Dilution Water, Organic Free. For UV-254 and TOC methods. 500 mL bottle. 由上海植茂提供，作为HACH的合作伙伴，还提供COD试剂21258-15、COD试剂21259-15、OD试剂21258-25s

Demineralized Type 2 Water Specific Conductance: ≤1 ?S/cm, Silica (SiO2): ≤30 ?g/L, Chloride (Cl-): ≤20 ?g/L, Hardness: Negative, C由上海植茂提供，作为HACH的合作伙伴，还提供COD试剂21258-15、COD试剂21259-15、OD试剂21258-25s

For determination of cobalt and nickel by the PAN method (Hach methods 8078 and 8150). Also used in Phenols test kits. Pack of 100 powde由上海植茂提供，作为HACH的合作伙伴，还提供COD试剂21258-15、COD试剂21259-15、OD试剂21258-25s

ACS Grade. CAS No. 7647-01-0. HCl, approx. 37%. FW = 36.46. 2.5 L bottle由上海植茂提供，作为HACH的合作伙伴，还提供COD试剂21258-15、COD试剂21259-15、OD试剂21258-25s