Valid

GB/T 11903-1989Water quality. Determination of colority (English PDF)

Preview PDF

This is a limited preview

Buy now to download the full PDF (3 pages)

Need quotation for your management?

Get a formal quotation for GB/T 11903-1989 in 30 minutes.

Issued by

State Bureau of Technical Supervision

Level / Type

National · Recommended

Issue date

November 3, 1989

Implementation date

July 1, 1990

Scope

GB/T 11903-1989 (Water quality. Determination of colority) is available as an English-translated PDF.

GB/T 11903-1989 — This standard specifies the method for the determination of two colors. This standard is determined by the color of the sample after 15min clarification. pH value have a greater impact on the color, the color measurement of pH should be measured at the same time.

Platinum-cobalt colorimetry reference international standards ISO 7887-1985 "Water color test and measurement. " Platinum-cobalt assay suitable for clean water, light pollution and slightly yellow tint water cleaner surface water, groundwater and drinking water.

Dilution law applies to more polluting surface water and industrial wastewater. Two kinds of methodologies should be used independently, generally not comparable.

Found what you need?

Document preview — GB/T 11903-1989

National Standard of the People's Republic of China

ICS: 13.060.40
Classification: Z 16

Issued by: State Bureau of Technical Supervision

What this standard covers1
Document data2

What this standard covers

This standard specifies the method for the determination of two colors. This standard is determined by the color of the sample after 15min clarification. pH value have a greater impact on the color, the color measurement of pH should be measured at the same time. Platinum-cobalt colorimetry reference international standards ISO 7887-1985 "Water color test and measurement. " Platinum-cobalt assay suitable for clean water, light pollution and slightly yellow tint water cleaner surface water, groundwater and drinking water. Dilution law applies to more polluting surface water and industrial wastewater. Two kinds of methodologies should be used independently, generally not comparable. When the color of the sample and standard solutions tones inconsistent, this standard does not apply.

Document data

International classification (ICS): 13.060.40.

Chinese classification (CCS): Z16.

Estimated length of the Chinese original: 4,470 words.

Adopted international standard: ISO 7887-1985, NEQ.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 3 pages — is available in the English PDF.

Referenced standards

Cited by

How to Download GB/T 11903-1989

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.