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Analytical reference standards

How to Choose an Analytical Reference Standard Supplier？

Analytical reference standards are critical components of quality assurance in laboratories. These standards are defined and supplied by manufacturers with accompanying Certificates of Analysis (COA). Key factors to consider when selecting a supplier include purity, stability, traceability, applicability, and supplier credibility. Analytical standards must exhibit high purity to ensure accuracy and reliability in test results. Additionally, they should maintain stability over time, preserving their chemical properties and concentration under specified storage conditions.

Hengyuan Fine Chemical’s PCL Brand
PCL, produced by Sichuan Purechemland Reference Materials Co., Ltd., is a trusted supplier of analytical reference standards. As a National Reference Material Development Unit, China Chemical Reagent Industry Association member, and AAA Credit Enterprise, PCL operates with full certifications:

CNAS accreditation
ISO 17034:2016 (Reference Material Producer certification)
ISO 9001:2015 (Quality Management System for R&D and sales)
Multiple independent intellectual property rights

Equipped with advanced analytical instruments (e.g., LC, LC-MS, GC, NMR, IR spectroscopy, automatic potentiometric titrators, UV spectrophotometers), PCL ensures homogeneous materials, precisely characterized values, and COA-certified products，Purity≥99%. We offer custom synthesis services, factory-direct pricing, stable supply chains, and dedicated post-sales support.

Product Number	Product Name	CAS No.	Molecular Formula
Product Number:PCL-#-De009-1ml	Product Name:n-decanol	CAS No.:112-30-1	Molecular Formula:
Product Number:72622-100mg	Product Name:ethyl acrylate	CAS No.:140-88-5	Molecular Formula:
Product Number:PCL-#-Xm100-5ml	Product Name:m-Xylene	CAS No.:108-38-3	Molecular Formula:
Product Number:PCL-#-Az019-100mg	Product Name:azobenzene	CAS No.:103-33-3	Molecular Formula:
Product Number:PCL-#-Te234-2ml	Product Name:Toluene	CAS No.:108-88-3	Molecular Formula:
Product Number:PCL-#-Be957-50mg	Product Name:Benzyl chloroformate	CAS No.:501-53-1	Molecular Formula:
Product Number:PCL-#-Tb100-50mg	Product Name:4-tert-butylphenol	CAS No.:98-54-4	Molecular Formula:
Product Number:PCL-#-Fm101-20mg	Product Name:D-alanine	CAS No.:338-69-2	Molecular Formula:
Product Number:PCL-#-T136-20mg	Product Name:p-Toluenesulfonic acid; 4-Methylbenzenesulfonic acid	CAS No.:104-15-4	Molecular Formula:
Product Number:PCL-#-Th147-20mg	Product Name:L-thioproline	CAS No.:34592-47-7	Molecular Formula:
Product Number:PCL-#-Pi110-50mg	Product Name:2-Piperidinecarboxylic acid	CAS No.:4043-87-2	Molecular Formula:
Product Number:PCL-#-Cb767-100mg	Product Name:Hydrocholine bitartrate	CAS No.:87-67-2	Molecular Formula:
Product Number:PCL-#-Ga343-1g	Product Name:Glutaric acid; 1,3-Propanedioic acid	CAS No.:110-94-1	Molecular Formula:
Product Number:PCL-#-Pi100-20mg	Product Name:Piperazine	CAS No.:110-85-0	Molecular Formula:
Product Number:PCL-#-Hy019-100mg	Product Name:1,2-diphenylhydrazine	CAS No.:122-66-7	Molecular Formula:
Product Number:PCL-#-Cp100-50mg	Product Name:Cyclopentyl phenyl ketone	CAS No.:5422-88-8	Molecular Formula:
Product Number:PCL-#-Oa001-25mg	Product Name:Oleic acid	CAS No.:112-80-1	Molecular Formula:
Product Number:PCL-#-Py100-100mg	Product Name:Pyridoxine hydrochloride	CAS No.:524-36-7	Molecular Formula:
Product Number:78291-100mg	Product Name:butyl methacrylate	CAS No.:97-88-1	Molecular Formula:
Product Number:PCL-#-P319-20mg	Product Name:alpha-pinene	CAS No.:80-56-8	Molecular Formula: