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:1ST21427-100mg	Product Name:cresyltriazole trisiloxane	CAS No.:155633-54-8	Molecular Formula:
Product Number:HB6238-10	Product Name:MacConkey agar medium (Chinese Pharmacopoeia)	CAS No.:N/A	Molecular Formula:
Product Number:HB0114	Product Name:Crystallized Violet Neutral Red Bile Salt Agar (VRBA)	CAS No.:N/A	Molecular Formula:
Product Number:CM101	Product Name:Plate Count Agar (PCA)	CAS No.:N/A	Molecular Formula:
Product Number:M153	Product Name:oxidase reagent	CAS No.:N/A	Molecular Formula:
Product Number:GSB 04-1762-2004-20ml	Product Name:zirconium standard solution	CAS No.:Zr	Molecular Formula:
Product Number:GBW(E)082053	Product Name:Total Organic Carbon (TOC) in water	CAS No.:/	Molecular Formula:
Product Number:BW20058-1000-50	Product Name:Nitrogen dioxide in water (as NO2)	CAS No.:/	Molecular Formula:
Product Number:BW900555-100-M	Product Name:Benz(a)anthracene in dichloromethane	CAS No.:56-55-3	Molecular Formula:
Product Number:93203a	Product Name:Benzo[b]fluoranthene in dichloromethane	CAS No.:205-99-2	Molecular Formula:
Product Number:GSB 04-2834-2011-20ml	Product Name:Standard solution of iodide (iodide)	CAS No.:/	Molecular Formula:
Product Number:BW081603-2	Product Name:Standard substance for sodium hydroxide solution for volumetric analysis	CAS No.:1310-73-2	Molecular Formula:
Product Number:727855-100mg	Product Name:n-propyl acrylate	CAS No.:925-60-0	Molecular Formula:
Product Number:72255-1g	Product Name:n-nonane	CAS No.:111-84-2	Molecular Formula:
Product Number:77081-100mg	Product Name:isopentane	CAS No.:78-78-4	Molecular Formula:
Product Number:PCL-#-Et095-100mg	Product Name:ethyl acetate	CAS No.:141-78-6	Molecular Formula:
Product Number:72481-100mg	Product Name:methyl acetate	CAS No.:79-20-9	Molecular Formula:
Product Number:716851-100mg	Product Name:ethylene glycol diacetate	CAS No.:111-55-7	Molecular Formula:
Product Number:71779-1g	Product Name:Ethylbenzene	CAS No.:100-41-4	Molecular Formula:
Product Number:71955-1g	Product Name:perchloroethylene	CAS No.:127-18-4	Molecular Formula: