Products

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-#-Te642-100mg	Product Name:3,3,5,5-Tetramethylbenzidine dihydrochloride (TMB HCL)	CAS No.:64285-73-0	Molecular Formula:
Product Number:PCL-#-So137-25mg	Product Name:sodium propionate	CAS No.:137-40-6	Molecular Formula:
Product Number:PCL-#-Th625-100mg	Product Name:thioacetamide	CAS No.:62-55-5	Molecular Formula:
Product Number:PCL-#-Br018-1ml	Product Name:Bromohexane	CAS No.:111-25-1	Molecular Formula:
Product Number:PCL-#-La502-100mg	Product Name:DL-lactic acid	CAS No.:50-21-5	Molecular Formula:
Product Number:PCL-#-Al130-100mg	Product Name:Alizarin Red S	CAS No.:130-22-3	Molecular Formula:
Product Number:PCL-NC061-1ml	Product Name:Diisononyl phthalate	CAS No.:28553-12-0	Molecular Formula:
Product Number:PCL-#-Me059-1ml	Product Name:Propylene glycol monomethyl ether acetate, ≥99.5%	CAS No.:108-65-6	Molecular Formula:
Product Number:PCL-#-Mi900-100mg	Product Name:microcrystalline cellulose	CAS No.:9004-34-6	Molecular Formula:
Product Number:PCL-#-Na840-100mg	Product Name:Ethyl N-acetyl-L-tyrosinate	CAS No.:840-97-1	Molecular Formula:
Product Number:PCL-#-Si147-100mg	Product Name:Silver diethyldithiocarbamate	CAS No.:1470-61-7	Molecular Formula:
Product Number:PCL-#-Et634-100mg	Product Name:1-Ethyliodoquinoline	CAS No.:634-35-5	Molecular Formula:
Product Number:PCL-#-Ca398-100mg	Product Name:Calcium disodium EDTA	CAS No.:23411-34-9	Molecular Formula:
Product Number:PCL-#-Ne771-100mg	Product Name:N-(2,6-dimethylphenyl)-2-chloroacetamide	CAS No.:77191-36-7	Molecular Formula:
Product Number:PCL-#-Di996-100mg	Product Name:Dinitrobenzene	CAS No.:99-65-0	Molecular Formula:
Product Number:PCL-#-Et156-100mg	Product Name:1-ethoxy-2-propanol	CAS No.:1569-02-4	Molecular Formula:
Product Number:PCL-#-Al300-100mg	Product Name:Allylbenzene	CAS No.:300-57-2	Molecular Formula:
Product Number:PCL-#-Cy108-100mg	Product Name:Cyanuric acid (g)	CAS No.:108-80-5	Molecular Formula:
Product Number:PCL-#-Ch804-100mg	Product Name:EthanoxR 310 antioxidant	CAS No.:N/A	Molecular Formula:
Product Number:PCL-#-Sn822-100mg	Product Name:Boc-L-3-bromophenylalanine	CAS No.:82278-73-7	Molecular Formula: