GB/T 6909-2018 Translated English of Chinese Standard (GB/T 6909-2018, GBT6909-2018): Analysis of water used in boiler and cooling system -- Determination of hardness [Buy--download True-PDF in 3-second: https://play.google.com/books > Sign in > This BOOK > "3-dots" > Export > Save as "*.pdf"]https://www.chinesestandard.net, 7 בפבר׳ 2023 - 12 עמודים This Standard specifies the determination method for hardness of water used in boiler and cooling system. This Standard applies to the determination for hardness of water used in boiler and cooling system. The determination range of chrome black T method in this Standard is 0.01mmol/L~5mmol/L. When it exceeds 5mmol/L, the sampling volume can be appropriately reduced. Determine after dilution. The determination range of acid chrome blue K method is 1¦Ìmol/L~100¦Ìmol/L. The determination range of potentiometric titration is 0.25mmol/L~10mmol/L (both with Ca2+ and Mg2+ as basic units). This Standard is also applicable to the determination of the hardness of natural water, cooling water, demineralized water and boiler feed water. |
מתוך הספר
תוצאות 1-5 מתוך 11
עמוד 1
... boiler and cooling system - Determination of hardness 锅炉用水和冷却水分析方法硬度的测定 Issued on: June 07, 2018 Implemented on: January 01, 2019 Issued by: State Administration for Market Regulation; Standardization Administration of ...
... boiler and cooling system - Determination of hardness 锅炉用水和冷却水分析方法硬度的测定 Issued on: June 07, 2018 Implemented on: January 01, 2019 Issued by: State Administration for Market Regulation; Standardization Administration of ...
עמוד 2
Analysis of water used in boiler and cooling system -- Determination of hardness [Buy--download True-PDF in 3-second: https://play.google.com/books > Sign in > This BOOK > "3-dots" > Export > Save as "*.pdf"] https://www.chinesestandard ...
Analysis of water used in boiler and cooling system -- Determination of hardness [Buy--download True-PDF in 3-second: https://play.google.com/books > Sign in > This BOOK > "3-dots" > Export > Save as "*.pdf"] https://www.chinesestandard ...
עמוד 3
... boiler and cooling system - Determination of hardness". Compared with GB/T 6909-2008, in addition to the editorial modifications, the main technical differences in this Standard are as follows: - The scope of application of the standard ...
... boiler and cooling system - Determination of hardness". Compared with GB/T 6909-2008, in addition to the editorial modifications, the main technical differences in this Standard are as follows: - The scope of application of the standard ...
עמוד 4
... boiler and cooling system - Determination of hardness WARNING -- The strong acids and alkalis used in this Standard are corrosive. Avoid inhalation or contact with skin when using. If splashed on the body, rinse immediately with plenty ...
... boiler and cooling system - Determination of hardness WARNING -- The strong acids and alkalis used in this Standard are corrosive. Avoid inhalation or contact with skin when using. If splashed on the body, rinse immediately with plenty ...
עמוד 5
הגעת למגבלת הצפייה עבור ספר זה מדוע?.
הגעת למגבלת הצפייה עבור ספר זה מדוע?.
מונחים וביטויים נפוצים
2mL of L-cysteine 2mL of triethanolamine acid chrome blue acid standard titration added to jointly adding the indicator ammonia-ammonium chloride buffer arithmetic mean boiler and cooling borax buffer solution c(EDTA Calculate the hardness chloride buffer solution chrome black chrome blue K concentration of disodium copper and manganese cysteine disodium edetate consumed disodium edetate standard Disodium ethylenediaminetetraacetic acid disodium magnesium salt edetate standard titration EDTA disodium magnesium eliminate the interference end point Erlenmeyer flask ethylenediaminetetraacetic acid standard greater than 0.1mg/L greater than 2mg/L hydrochloric acid solution hydrochloride and triethanolamine indicator solution jointly mask L-cysteine hydrochloride solution less than 1mmol/L liter mol/L mask and eliminate masking to eliminate Method summary milliliters mL millimoles molar concentration parallel determination results pipette to measure Reagents or materials sodium hydroxide solution solution and 2mL solution of disodium solution or hydrochloric solution to titrate standard titration solution Test steps titration solution consumed triethanolamine solution water sample reaches