GB/T 45131-2025 English PDF

US$279.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 45131-2025: Analysis of water used in boiler and cooling system - Determination of phosphate, chloride, silicate, total alkalinity, phenolphthalein alkalinity, hardness and iron - Spectrophotometric detection by discrete analysis systems
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 45131-2025	279	Add to Cart	3 days	Analysis of water used in boiler and cooling system - Determination of phosphate, chloride, silicate, total alkalinity, phenolphthalein alkalinity, hardness and iron - Spectrophotometric detection by discrete analysis systems	Valid

Similar standards

GB/T 41330   GB/T 37906   GB/T 37907   GB/T 45386.1   GB/T 14420   

Basic data

Standard ID: GB/T 45131-2025 (GB/T45131-2025)
Description (Translated English): Analysis of water used in boiler and cooling system - Determination of phosphate, chloride, silicate, total alkalinity, phenolphthalein alkalinity, hardness and iron - Spectrophotometric detection by discrete analysis systems
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G76
Classification of International Standard: 13.060.50; 71.040.40
Word Count Estimation: 14,197
Date of Issue: 2025-01-24
Date of Implementation: 2025-08-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 45131-2025: Analysis of water used in boiler and cooling system - Determination of phosphate, chloride, silicate, total alkalinity, phenolphthalein alkalinity, hardness and iron - Spectrophotometric detection by discrete analysis systems

---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.
ICS 13.060.50;71.040.40 CCSG76 National Standard of the People's Republic of China Boiler water and cooling water analysis methods Phosphate, Chloride, silicate, total alkalinity, phenolphthalein alkalinity, hardness and Iron determination based on discontinuous analysis system Released on 2025-01-24 2025-08-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the China Petroleum and Chemical Industry Federation. This document is under the jurisdiction of the National Technical Committee on Chemical Standardization (SAC/TC63). This document was drafted by. Guangdong Special Equipment Testing Institute Dongguan Testing Institute, Shandong Taihe Technology Co., Ltd., Hengyang Construction Heng Industrial Co., Ltd., Zhejiang Shuizhiyin Testing Co., Ltd., Lanbao (Xiamen) Water Treatment Technology Co., Ltd., Guangdong Beili Biotechnology Co., Ltd. Company, Angang Litian (Anshan) Water Treatment Co., Ltd., Nanjing Xinkate Biotechnology Development Co., Ltd., CNOOC Huizhou Petrochemical Co., Ltd., Hangzhou Special Equipment Inspection and Scientific Research Institute (Hangzhou Special Equipment Emergency Response Center), Shanghai Juhan Energy Technology Co., Ltd., Nanjing Hua Tianjin Technology Development Co., Ltd., Shandong Kairui Chemical Co., Ltd., Shanghai Gaosen Water Treatment Co., Ltd., CNOOC Tianjin Chemical Research Institute LIMITED. The main drafters of this document are. Wang Yizhuang, Wang Donghai, He Qingfeng, Tang Libo, Wang Zhiwei, Chen Haibin, Ma Rongcai, Chen Guosong, Wang Chaojun, Chen Tao, Jiang Mei, Gu Lei, Sun Baoji, Zhang Jufang, and Li Lin. Boiler water and cooling water analysis methods Phosphate, Chloride, silicate, total alkalinity, phenolphthalein alkalinity, hardness and Iron determination based on discontinuous analysis system Spectrophotometry Warning. Some of the reagents used in this document are toxic and corrosive. Some test procedures may lead to dangerous situations. The operator is responsible for Take appropriate safety and health measures and operate with caution

1 Scope

This document describes the use of a discontinuous analysis system for the determination of phosphates, chlorides, silicates, total alkalinity, phenolphthalein alkalinity, Method for determination of hardness and iron content. This document is applicable to the determination of phosphate, chloride, silicate, total alkalinity, phenolphthalein alkalinity, hardness, and iron content in boiler water and cooling water. The applicable scope of this method is. phosphate (in terms of PO43-) 1.00mg/L~50.00mg/L, chloride (in terms of Cl-) 10.00mg/L~ 100.0mg/L, silicate (in terms of Si) 0.10mg/L~6.00mg/L, total alkalinity 0.50mmol/L~8.00mmol/L, phenolphthalein alkalinity 0.50mmol/L~5.00mmol/L, hardness (with Ca2 and Mg2 as basic units) 0.50mmol/L~1.75mmol/L, iron (with Fe Calculation) 0.10mg/L~10.00mg/L.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 602 Preparation of standard solutions for determination of impurities in chemical reagents GB/T 6682-2008 Specifications and test methods for water used in analytical laboratories GB/T 6907 Boiler water and cooling water analysis method Water sampling method GB/T 6913 Analysis methods for boiler water and cooling water - Determination of phosphate GB/T 14427 Analysis methods for boiler water and cooling water Determination of iron

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 By integrating automatic sampling and spectrophotometry modules, an automated system for multi-parameter interval flow analysis is realized.

4 Principle

Based on the discontinuous analysis system, the interval analysis is automatically performed according to the procedures corresponding to each test item in Appendix A to Appendix G. The sample and reagent are added to the reaction pool for mixing and color reaction. The absorbance of the solution is measured at a certain wavelength. ......

Image     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 45131-2025_English be delivered?

Answer: Upon your order, we will start to translate GB/T 45131-2025_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 45131-2025_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 45131-2025_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.