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-2021ZSY007-100ml		Product Name:Xylenol orange indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY023-100ml		Product Name:Methyl orange-methylene blue mixed indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY011-100ml		Product Name:Neutral red indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY062-100ml		Product Name:Sodium eosin indicator solution (for microbial limit testing)	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY022-100ml		Product Name:Methyl orange-xylene cyanol FF mixed indicator liquid	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY016-100ml		Product Name:Cresol red indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2024ZSY055-100ml		Product Name:Bromocresol green indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2024ZSY551-100ml		Product Name:Sodium diphenylamine sulfonate indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY030-100ml		Product Name:Meta-cresol purple indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY010-100ml		Product Name:Catechol purple indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY063-100ml		Product Name:Thymolphthalein indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY031-100ml		Product Name:Metal phthalate indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY060-100ml		Product Name:Orange IV indicator liquid	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY049-100ml		Product Name:Hydroxynaphthol blue indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY054-100ml		Product Name:Bromocresol purple indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY048-100ml		Product Name:Azo violet indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY001-250ml		Product Name:Starch indicator solution containing zinc and potassium iodide	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY004-100ml		Product Name:Dimethyl yellow indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY027-100ml		Product Name:Congo red indicator	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY046-100g		Product Name:Chrome Black T Indicator	CAS No.:N/A	Molecular Formula:

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