Valid

HG/T 3520-2015Industrial circulating cooling water - Determination of calcium ion in phosphate-zinc prefilming solution (English PDF)

工业循环冷却水磷锌预膜液中钙离子测定方法

Preview PDF

This is a limited preview

Buy now to download the full PDF (15 pages)

Need quotation for your management?

Get a formal quotation for HG/T 3520-2015 in 30 minutes.

Issued by

MIIT

Level / Type

Industry · Recommended

Issue date

July 14, 2015

Implementation date

January 1, 2016

Scope

HG/T 3520-2015 is the English-translated version of 工业循环冷却水磷锌预膜液中钙离子测定方法.

Prefilming fluids used in industrial circulating cooling water are the subject of HG/T 3520-2015, a recommended chemical industry standard covering the determination of calcium in polyphosphate-zinc prefilming solutions. The determination is made by EDTA titration. It applies to calcium contents of 20 mg/L to 200 mg/L in industrial circulating cooling water prefilming solutions of that kind. It quotes GB/T 601 and GB/T 6682. The standard supersedes HG/T 3520-2000 and is filed under the Chinese classification G76 and ICS 71.040.40. Issued on 14 July 2015, it has applied since 1 January 2016.

Found what you need?

Document preview — HG/T 3520-2015

National Standard of the People's Republic of China

ICS: 71.040.40
Replacing: HG/T 3520-2000

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

2 Normative references

2 Normative references

HG/T 3520-2015 cites the following standards, which apply in full or in part through the references made to them in its clauses.

GB/T 601

GB/T 6682

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

Similar standards

HG/T 3534-2011|HG/T 3540-2011|HG/T 3525-2011|GB/T 14636-2021|GB/T 14637-2021|HG/T 3519-2023

Editions of HG/T 3520

Edition	Title	Revision	Status
HG/T 3520-2015	Industrial circulating cooling water - Determination of calcium ion in phosphate-zinc prefilming solution	current edition	Current
HG/T 3520-2000	Industrial circulating cooling water - Determination of calcium ion in phosphate-zinc prefilming solution	previous edition	Superseded

This page sells the current edition, HG/T 3520-2015. Earlier editions are listed for reference only.

How to Download HG/T 3520-2015

1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.