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-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:
Product Number:PCL-2021ZSY006-100ml		Product Name:Dimethyl yellow-solvent blue 19 mixed indicator liquid	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY052-100ml		Product Name:Quinaldine red-methylene blue mixed indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY012-100ml		Product Name:Neutral red indicator solution (for microbial limit testing)	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2024ZSY555-100ml		Product Name:Methyl red-methylene blue mixed indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY059-100ml		Product Name:Solvent Blue 19 Indicator Liquid	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY020-50ml		Product Name:Methyl red-bromocresol green mixed indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY033-250ml		Product Name:Fluorescent yellow indicator liquid	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY038-100ml		Product Name:Turmeric Indicator Liquid	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2024SY086-100ml		Product Name:Phenol red indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY041-100ml		Product Name:Phthalocyanine indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY044-100ml		Product Name:Phenolsulfonphthalein indicator solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY037-100ml		Product Name:Bright green indicator fluid	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY029-100ml		Product Name:1-Phenanthroline Indicator Solution	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY035-100ml		Product Name:Calcein indicator	CAS No.:N/A	Molecular Formula:
Product Number:PCL-2021ZSY036-100g		Product Name:Calcorhodin Indicator	CAS No.:N/A	Molecular Formula:

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