Code hóa chất Merck

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Bạn nào biết cách tìm code hóa chất Merck thì tìm hộ mình mấy chất dưới đây với nhé :

1. Potassium hydrogen phthalate Volumetric standard, secondary reference material for alkalimetry, traceable to NIST Standard Reference Material (SRM) CertiPUR® KHC8H4O4.
2. di-Sodium oxalate volumetric standard, secondary reference material for redox titration, traceable to NIST Standard Reference Material (SRM) CertiPUR® NA2C2O4.
3.Potassium dichromate volumetric standard, secondary reference material for redox titration, traceable to NIST Standard Reference Material (SRM) CertiPUR® K2CR2O7
4. Sodium carbonate volumetric standard, secondary reference material for acidimetry, traceable to NIST Standard Reference Material (SRM) CertiPUR® NA2CO3.
5. Sodium chloride volumetric standard, secondary reference material for argentometry, traceable to NIST Standard Reference Material (SRM) CertiPUR® NaCl.
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