Home Cart Quotation Policy About-Us
www.ChineseStandard.net
Database: 221938 (17 Apr 2026)
SEARCH
Path: Home > GB/T > Page571 > GB/T 11957-2001

GB/T 11957-2001 PDF English

Price & Delivery

US$159.00 · In stock · Download in 9 seconds
GB/T 11957-2001: Determination of yield of humic acids in coal
Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure
Status: Valid

GB/T 11957: Historical versions

Std IDVersionUSDBuyDeliver [PDF] inTitle (Description)
GB/T 11957-2001English159 Add to Cart 3 days [Need to translate] Determination of yield of humic acids in coal
GB/T 11957-1989English239 Add to Cart 2 days [Need to translate] Determination of yield of humic acids in coal

Click to Preview a similar PDF

Basic data

Standard ID GB/T 11957-2001 (GB/T11957-2001)
Description (Translated English) Determination of yield of humic acids in coal
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard D21
Classification of International Standard 73.040
Word Count Estimation 6,679
Date of Issue 2001-11-12
Date of Implementation 2002-08-01
Older Standard (superseded by this standard) GB/T 11957-1989
Quoted Standard GB/T 212-2001;
Adopted Standard ISO 5073-1999; MOD
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China
Summary This standard specifies: Two coal humic acid yield determination Method, namely volumetric method and residual method (the former for arbitration), and provides measurement reagents, equipment, measurement procedure, the results of the calculation and precision. This standard applies to: lignite, bituminous coal and weathering of low metamorphic grade coal.

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 11957-2001_English be delivered?


Answer: Upon your order, we will start to translate GB/T 11957-2001_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 11957-2001_English with my colleagues?


Answer: Yes. The purchased PDF of GB/T 11957-2001_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 11957-2001?


Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 11957-2001 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.
Refund Policy Privacy Policy Terms of Service