Hengyuan Fine Chemical is a leading supplier of reference materials and standards, specializing in providing high-precision and highly reliable solutions for industries such as environmental testing, food safety, and pharmaceutical research and development. We offer nearly 50,000 ready-to-ship products, including pharmaceutical impurity reference standards, chemical analysis reference standards, pharmacopoeial titrants, biopeptide reference standards, and more, meeting the testing needs of various industries.

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Hengyuan Fine Chemical—where precision becomes a habit and trust becomes a bond.

Product Number	Image	Product Name	CAS No.	Molecular Formula
Product Number:PCL-#-HC005- 250ml		Product Name:Oxalate Standard Buffer Solution2	CAS No.:	Molecular Formula:
Product Number:PCL-#-HC005- 500ml		Product Name:Oxalate Standard Buffer Solution1	CAS No.:	Molecular Formula:
Product Number:GBW(E)130194		Product Name:Potassium Hydrogen Phthalate (KHP) pH Reference Material	CAS No.:	Molecular Formula:
Product Number:PCL-2020HC060-50ml		Product Name:Phthalate Buffer Solution3	CAS No.:	Molecular Formula:
Product Number:PCL-2020HC060-250ml		Product Name:Phthalate Buffer Solution2	CAS No.:	Molecular Formula:
Product Number:PCL-2020HC060-1L		Product Name:Phthalate Buffer Solution1	CAS No.:	Molecular Formula:
Product Number:PCL-2020HC065-250ml		Product Name:Phthalate Standard Buffer Solution（Potassium Hydrogen Phthalate (KHP) pH Reference Material）4	CAS No.:	Molecular Formula:
Product Number:PCL-2020HC065-50ml		Product Name:Phthalate Standard Buffer Solution（Potassium Hydrogen Phthalate (KHP) pH Reference Material）3	CAS No.:	Molecular Formula:
Product Number:PCL-2020HC060-500ml		Product Name:Phthalate Standard Buffer Solution（Potassium Hydrogen Phthalate (KHP) pH Reference Material）2	CAS No.:	Molecular Formula:
Product Number:PCL-2020HC065-500ml		Product Name:Phthalate Standard Buffer Solution（Potassium Hydrogen Phthalate (KHP) pH Reference Material）1	CAS No.:	Molecular Formula:
Product Number:PCL-2021BZ201-100ml		Product Name:Potassium Chloride (KCl) Conductivity Standard Solution2	CAS No.:	Molecular Formula:
Product Number:PCL-2021BZ004-500ml		Product Name:Potassium Chloride (KCl) Conductivity Standard Solution1	CAS No.:	Molecular Formula:
Product Number:PCL-2023BZ618-250mL		Product Name:Conductivity Standard Solution42	CAS No.:	Molecular Formula:
Product Number:PCL-2021BZ080-250ml		Product Name:Conductivity Standard Solution41	CAS No.:	Molecular Formula:
Product Number:PCL-2021BZ079-250ml		Product Name:Conductivity Standard Solution40	CAS No.:	Molecular Formula:
Product Number:PCL-2021BZ078-250ml		Product Name:Conductivity Standard Solution39	CAS No.:	Molecular Formula:
Product Number:PCL-2021BZ062-500ml		Product Name:Conductivity Standard Solution38	CAS No.:	Molecular Formula:
Product Number:PCL-2021BZ061-500ml		Product Name:Conductivity Standard Solution37	CAS No.:	Molecular Formula:
Product Number:PCL-2021BZ059-500ml		Product Name:Conductivity Standard Solution36	CAS No.:	Molecular Formula:
Product Number:PCL-2021BZ001-500ml		Product Name:Conductivity Standard Solution35	CAS No.:	Molecular Formula:

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