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-2024BZ235-2ml		Product Name:Osmolality Standard Reference Material4	CAS No.:	Molecular Formula:
Product Number:PCL-2024BZ225-1ml		Product Name:Osmolality Standard Reference Material3	CAS No.:	Molecular Formula:
Product Number:PCL-2024BZ220-1ml		Product Name:Osmolality Standard Reference Material2	CAS No.:	Molecular Formula:
Product Number:PCL-2024BZ175-2mL		Product Name:Osmolality Standard Reference Material1	CAS No.:	Molecular Formula:
Product Number:PCL-2024BZ450-1ml		Product Name:Osmolality Standard Reference Material（100mOsmol/kg，USP）	CAS No.:	Molecular Formula:
Product Number:PCL-2024BZ220-2ml		Product Name:Sodium Chloride Solution Osmolality Standard Reference Material (SRM)	CAS No.:	Molecular Formula:
Product Number:PCL-#-HC014-250mL		Product Name:pH Standard Solution	CAS No.:	Molecular Formula:
Product Number:PCL-2023BZ667-250ml		Product Name:Calcium Hydroxide Saturated Solution (25°C) pH Standard Solution	CAS No.:	Molecular Formula:
Product Number:PCL-#-HC015-250ml		Product Name:pH Standard Buffer Solution6	CAS No.:	Molecular Formula:
Product Number:PCL-#-HC016-50ml		Product Name:pH Standard Buffer Solution5	CAS No.:	Molecular Formula:
Product Number:PCL-#-HC016-30ml		Product Name:pH Standard Buffer Solution4	CAS No.:	Molecular Formula:
Product Number:PCL-#-HC016-250ml		Product Name:pH Standard Buffer Solution3	CAS No.:	Molecular Formula:
Product Number:PCL-#-HC016-1L		Product Name:pH Standard Buffer Solution2	CAS No.:	Molecular Formula:
Product Number:PCL-#-HC016--500ml		Product Name:pH Standard Buffer Solution1	CAS No.:	Molecular Formula:
Product Number:PCL-2024HC010-500ml		Product Name:pH Calibration Solution	CAS No.:	Molecular Formula:
Product Number:PCL-2024HC007-500ml		Product Name:Ethylenediamine-Hydrochloric Acid Buffer Solution	CAS No.:	Molecular Formula:
Product Number:GBW(E)130193		Product Name:Potassium Hydrogen Tetroxalate pH Standard Reference Material (SRM)	CAS No.:	Molecular Formula:
Product Number:GBW(E)130197		Product Name:Calcium Hydroxide pH Standard Reference Material (SRM)	CAS No.:	Molecular Formula:
Product Number:PCL-#-HC013-250ml		Product Name:Calcium Hydroxide pH Buffer Solution Standard Reference Material	CAS No.:	Molecular Formula:
Product Number:PCL-#-HC004- 250ml		Product Name:Calcium Hydroxide Standard Buffer Solution	CAS No.:	Molecular Formula:

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