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.

With a craftsmanship spirit at our core, we are committed to refining every product to ensure its quality and accuracy. At the same time, we understand customer needs through in-depth communication, providing customized solutions and fast delivery services to support the efficient progress of your projects.

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-2020HC022-1L		Product Name:Ammonia-Ammonium Chloride Buffer Solution (pH 10.0)	CAS No.:	Molecular Formula:
Product Number:PCL-2024SY101-20ml		Product Name:Water Quality pH Standard3	CAS No.:	Molecular Formula:
Product Number:PCL-2024SY100-20ml		Product Name:Water Quality pH Standard2	CAS No.:	Molecular Formula:
Product Number:PCL-2024SY102-20ml		Product Name:Water Quality pH Standard1	CAS No.:	Molecular Formula:
Product Number:GBW(E)130195		Product Name:Certified Mixed Phosphate pH Reference Material (KH₂PO₄)/Potassium Dihydrogen Phosphate pH Standard Solution	CAS No.:	Molecular Formula:
Product Number:GBW(E)130195-50g		Product Name:Certified Mixed Phosphate pH Reference Material (Na₂HPO₄）/Sodium Hydrogen Phosphate pH Standard Solution	CAS No.:	Molecular Formula:
Product Number:GBW(E)130196		Product Name:Certified Borax pH Reference Material	CAS No.:	Molecular Formula:
Product Number:PCL-#-HC003-250ml		Product Name:Borax pH Standard Solution2	CAS No.:	Molecular Formula:
Product Number:PCL-#-HC003-500ml		Product Name:Borax pH Standard Solution1	CAS No.:	Molecular Formula:
Product Number:PCL-2020HC068-250ml		Product Name:Borax Standard Buffer Solution5	CAS No.:	Molecular Formula:
Product Number:PCL-2020HC068-50ml		Product Name:Borax Standard Buffer Solution4	CAS No.:	Molecular Formula:
Product Number:PCL-2020HC068-500ml		Product Name:Borax Standard Buffer Solution3	CAS No.:	Molecular Formula:
Product Number:PCL-2020HC075-250ml		Product Name:Borax Standard Buffer Solution2	CAS No.:	Molecular Formula:
Product Number:PCL-2020HC068-100ml		Product Name:Borax Standard Buffer Solution1	CAS No.:	Molecular Formula:
Product Number:PCL-2020HC066-50ml		Product Name:Phosphate Standard Buffer Solution（PH buffer solution/Mixed Phosphate pH Reference Material）3	CAS No.:	Molecular Formula:
Product Number:PCL-2020HC066-250ml		Product Name:Phosphate Standard Buffer Solution（PH buffer solution/Mixed Phosphate pH Reference Material）2	CAS No.:	Molecular Formula:
Product Number:PCL-2020HC066-500ml		Product Name:Phosphate Standard Buffer Solution（PH buffer solution/Mixed Phosphate pH Reference Material）1	CAS No.:	Molecular Formula:
Product Number:PCL-#-HC005-250ml		Product Name:Oxalate Standard Buffer Solution5	CAS No.:	Molecular Formula:
Product Number:PCL-#-HC005-100ml		Product Name:Oxalate Standard Buffer Solution4	CAS No.:	Molecular Formula:
Product Number:PCL-#-HC005-500ml		Product Name:Oxalate Standard Buffer Solution3	CAS No.:	Molecular Formula:

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