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-2020HC028-1L		Product Name:Acetate buffer 1L	CAS No.:	Molecular Formula:
Product Number:PCL-2023HC002-500ml		Product Name:Tris buffer(pH 7.5)	CAS No.:	Molecular Formula:
Product Number:PCL-#-HC004-500ml		Product Name:Calcium Hydroxide Standard Buffer 500ml	CAS No.:	Molecular Formula:
Product Number:PCL-#-HC004-250ml		Product Name:Calcium Hydroxide Standard Buffer250ml	CAS No.:	Molecular Formula:
Product Number:PCL-2020HC106-100ml		Product Name:Total Hardness Buffer in Water	CAS No.:	Molecular Formula:
Product Number:PCL-2020HC069-500ml		Product Name:Ammonia-Sodium Chloride Buffer	CAS No.:	Molecular Formula:
Product Number:PCL-2023HC009		Product Name:Barbiturate-Calcium-Magnesium Stock Solution 2	CAS No.:	Molecular Formula:
Product Number:PCL-2020HC104-500ml		Product Name:Barbiturate buffer pH 7.3	CAS No.:	Molecular Formula:
Product Number:PCL-2021SY217-500mL		Product Name:Barbiturate-Calcium-Magnesium Stock Solution 1	CAS No.:	Molecular Formula:
Product Number:PCL-2023HC001- 500ml		Product Name:Ammonia buffer solution（ph=10）	CAS No.:	Molecular Formula:
Product Number:PCL-2023BZ006-250ml		Product Name:Borate standard buffer solution（0.01mol/L）	CAS No.:	Molecular Formula:
Product Number:PCL-2023BZ004-250ml		Product Name:Phthalate Standard Buffer Solution	CAS No.:	Molecular Formula:
Product Number:PCL-2023BZ005-250ml		Product Name:Phosphate standard buffer solution（0.25mol/L）	CAS No.:	Molecular Formula:
Product Number:PCL-2020HC042-500ml		Product Name:Phosphate buffered saline(pH2.0)	CAS No.:	Molecular Formula:
Product Number:PCL-2020HC057-500ml		Product Name:Phosphate buffered saline（pH11.0）	CAS No.:	Molecular Formula:
Product Number:PCL-2020HC014-500ml		Product Name:Phthalate buffer	CAS No.:	Molecular Formula:
Product Number:PCL-2020HC030-500ml		Product Name:Acetic acid-sodium acetate buffer（pH3.6）	CAS No.:	Molecular Formula:
Product Number:PCL-2020HC029-500ml		Product Name:Acetate-Lithium Buffer（pH3.0）	CAS No.:	Molecular Formula:
Product Number:PCL-2020HC025-500ml		Product Name:Boric acid-potassium chloride buffer（pH9.0）	CAS No.:	Molecular Formula:
Product Number:PCL-2020HC045-500ml		Product Name:Phosphate buffered saline（pH5.8）	CAS No.:	Molecular Formula:

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