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GB/T 14643.5-2009 English PDF

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Q: Should I purchase the latest version GB/T 14643.5-2009?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 14643.5-2009 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.

US$279.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 14643.5-2009: Examination of bacteria and algae in industrial circulating cooling water -- Part 5: Examination of sulfate-reducing bacteria -- MPN test
Status: Valid

GB/T 14643.5: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 14643.5-2009	279	Add to Cart	3 days	Examination of bacteria and algae in industrial circulating cooling water -- Part 5: Examination of sulfate-reducing bacteria -- MPN test	Valid
GB/T 14643.5-1993	279	Add to Cart	3 days	Industrial circulating cooling water sulfate--Reducing Bacteria--MPN test	Obsolete

Similar standards

GB/T 14637 GB/T 14636 GB/T 15453 GB/T 14643.4 GB/T 14643.6 GB/T 14643.3

Basic data

Standard ID: GB/T 14643.5-2009 (GB/T14643.5-2009)
Description (Translated English): Examination of bacteria and algae in industrial circulating cooling water -- Part 5: Examination of sulfate-reducing bacteria -- MPN test
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G76
Classification of International Standard: 71.040.40
Word Count Estimation: 12,192
Date of Issue: 2009-05-18
Date of Implementation: 2010-02-01
Older Standard (superseded by this standard): GB/T 14643.5-1993
Quoted Standard: GB/T 603; GB/T 6682
Regulation (derived from): PRC National Standard Approval Announcement 2009 No.6 (Total No.146)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the method for industrial circulating cooling water Determination of sulfate -reducing bacteria. This section applies to the determination of industrial circulating cooling water sulfate-reducing bacteria. Also applies to raw water, domestic water and slime determination of sulfate -reducing bacteria.

GB/T 14643.5-2009: Examination of bacteria and algae in industrial circulating cooling water -- Part 5: Examination of sulfate-reducing bacteria -- MPN test

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Examination of bacteria and algae in industrial circulating cooling water Part 5. Examination of sulfate-reducing bacteria MPN test. ICS 71.040.40 G76 National Standards of People's Republic of China Replacing GB/T 14643.5-1993 Industrial circulating cooling water - Determination of bacteria and algae Part 5. Determination of sulfate-reducing bacteria MPN method Posted 2009-05-18 2010-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 14643 "Determination of industrial circulating cooling water bacteria and algae" is divided into the following sections. --- Part 1. Determination of slime-forming bacteria plate count --- Part 2. Determination of soil bacteria plate count --- Part 3. slime fungi plate count --- Part 4. Soil fungi plate count --- Part 5. Determination of sulfate-reducing bacteria MPN method --- Part 6. Determination of iron bacteria MPN method This section GB/T 14643 Part 5. This Part replaces GB/T 14643.5-1993 "Industrial circulating cooling water - Determination of sulfate-reducing bacteria MPN method." This portion of the GB/T 14643.5-1993 compared to no change in technical content, but the text structure and text of the modify. This section of the Appendix A, Appendix B, Appendix C is a normative appendix. This part is proposed by the China Petroleum and Chemical Industry Association. This part of the National Standardization Technical Committee of Chemical Water Treatment Chemicals Branch (SAC/TC63/SC5) centralized. This section is responsible for drafting unit. CNOOC Tianjin Chemical Research & Design Institute, Tianjin Pacific Technology Co., Ltd. The main drafters of this section. Zhuzhuan Jun, Zhang Quan, Shaohong Qian, Li Lin, Bai Ying. This section was first released in 1993. Industrial circulating cooling water - Determination of bacteria and algae Part 5. Determination of sulfate-reducing bacteria MPN method

1 Scope

GB/T 14643 provisions of this part of the determination of industrial circulating cooling water sulfate-reducing bacteria. This section applies to industrial circulating cooling water - Determination of sulfate-reducing bacteria, but also for the raw water, domestic water and slime also Sulfate Determination of the original bacteria.

2 Normative references

The following documents contain provisions which, through GB/T 14643 reference in this text, constitute provisions of this part. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB/T 603 chemical reagent test methods in the formulation and preparation of products (GB/T 603-2002, ISO 6353-1 with. 1982, NEQ) GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, ISO 3696. 1987, MOD)

3 Method summary

Law multi-tube fermentation technique, (29 ± 1) ℃ cultured 21d, if you produce a black inner tube and precipitated with hydrogen sulfide odor, It indicates a positive reaction, the MPN technique being tested samples of sulfate-reducing bacteria counts.

4 Reagents and materials

The reagents used in this section, unless otherwise specified, shall use analytical reagent and in line with GB/T 6682 stipulated three of water. Test preparation and the desired products, did not indicate when the other requirements, according to GB /603 provisions of the preparation T. 4.1 dipotassium hydrogen. 4.2 ammonium chloride. 4.3 sodium sulfate. 4.4 calcium chloride. 4.5 magnesium sulfate. 4.6 sodium lactate. 4.7 yeast extract. biochemical reagents. 4.8 ferrous ammonium sulfate. 4.9 Vitamin C. 4.10 sodium chloride. 4.11 Sodium hydroxide solution. 40g/L. 4.12 hydrochloric acid solution. 1 + 11. 4.13 sodium thiosulfate. 4.14 ethanol. 75% (volume fraction). ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 14643.5-2009_English be delivered?

Answer: Upon your order, we will start to translate GB/T 14643.5-2009_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 14643.5-2009_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 14643.5-2009_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 14643.5-2009?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 14643.5-2009 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.