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-2023BZ101-50ml		Product Name:Chlorine Cl standard solution	CAS No.:	Molecular Formula:
Product Number:PCL-2023BZ070-500ml		Product Name:Ammonium ferrous sulfate titration solution	CAS No.:	Molecular Formula:
Product Number:PCL-2023BZ151-500ml		Product Name:Total ionic strength adjustment buffer solution	CAS No.:	Molecular Formula:
Product Number:PCL-2023BZ064-50ml		Product Name:Phosphorus (P) standard solution	CAS No.:	Molecular Formula:
Product Number:PCL-YZP04001-25C		Product Name:Total Phosphorus Detection Kit-Type D	CAS No.:	Molecular Formula:
Product Number:PCL-YZNH3001-25C		Product Name:Ammonia Nitrogen Test Kit for water	CAS No.:	Molecular Formula:
Product Number:PCL-YZCOD001-25C		Product Name:COD Detection Kit-Type D	CAS No.:	Molecular Formula:
Product Number:GSB 07-3170-2014 202280		Product Name:Total cyanide control sample,30.9µg/L	CAS No.:	Molecular Formula:
Product Number:GSB 07-3170-2014 202282		Product Name:Total cyanide control sample,65.5µg/L	CAS No.:	Molecular Formula:
Product Number:PCL-2023HJ027		Product Name:Standard sample/water quality total cyanide	CAS No.:	Molecular Formula:
Product Number:PCL-2023HJ005		Product Name:Nitrate nitrogen	CAS No.:	Molecular Formula:
Product Number:PCL-2023HJ021		Product Name:Standard sample/water quality Cyanide,53.7µg/L	CAS No.:	Molecular Formula:
Product Number:PCL-2023HJ020		Product Name:Standard sample/water quality Cyanide	CAS No.:	Molecular Formula:
Product Number:PCL-2023HJ019-50mL		Product Name:Cyanide solution in water	CAS No.:	Molecular Formula:
Product Number:PCL-2023HJ018		Product Name:Standard substance/cyanide in water/medium: 0.1 mol/L sodium hydroxide	CAS No.:	Molecular Formula:
Product Number:PCL-2023HJ016-20ml		Product Name:Water quality ammonia nitrogen quality control sample	CAS No.:	Molecular Formula:
Product Number:PCL-#-TP001-500ml		Product Name:TP reagent solution, standard solution (potassium persulfate solution)	CAS No.:	Molecular Formula:
Product Number:PCL-2023BZ941-20ml		Product Name:Ammonia nitrogen quality control sample in water,1.51mg/L	CAS No.:	Molecular Formula:
Product Number:PCL-2023BZ820		Product Name:Rhodium	CAS No.:	Molecular Formula:
Product Number:PCL-2023BZ942-20ml		Product Name:Ammonia nitrogen quality control sample in water,0.173mg/L	CAS No.:	Molecular Formula:

1. <
2. 36
3. 37
4. 38
5. 39
6. 40
7. >
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660