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本標(biāo)準(zhǔn)規(guī)定了高純?cè)噭┰囼?yàn)方法中實(shí)驗(yàn)用水與試劑、器具與容器、器具與容器的清洗及保存、試驗(yàn)環(huán)境、樣品溶液及標(biāo)準(zhǔn)溶液的配制和通用方法。本標(biāo)準(zhǔn)適用于高純有機(jī)試劑和高純無(wú)機(jī)試劑(不包括純度大于99.99%的高純無(wú)機(jī)單質(zhì))試驗(yàn)方法的制(修)定。
General rule for test methods of highly purified reagents
本標(biāo)準(zhǔn)規(guī)定了集成電路用過(guò)氧化氫產(chǎn)品的性狀要求、技術(shù)規(guī)格和指標(biāo);含量測(cè)定、色度測(cè)定、酸度測(cè)定、總有機(jī)碳測(cè)定、陰離子測(cè)定、金屬離子測(cè)定、顆粒測(cè)定等測(cè)定方法;還規(guī)定了檢驗(yàn)規(guī)則,及標(biāo)志、包裝、運(yùn)輸和儲(chǔ)存要求等。
Hydrogen peroxide for Intergrated circuits
本標(biāo)準(zhǔn)規(guī)定了高純氫氧化鈉中硫酸鹽的離子色譜檢測(cè)方法。 本標(biāo)準(zhǔn)適用于高純氫氧化鈉中硫酸鹽的測(cè)定。
Ion Chromatography for Detection of Sulfate in High Purity Sodium Hydroxide
Cation conductivity provides one of the most sensitive and dependable on-line means of detecting anionic contamination in the boiler/steam cycle, such as chlorides, sulfates, nitrates, bicarbonates, and organic acids, such as formic and acetic. High sensitivity is provided by intentionally eliminating the pH adjusting treatment chemical(s), for example, ammonia and amines, from the sample and converting remaining salt contaminants into their acid forms which are approximately three times as conductive. Guidelines on cation conductivity limits for various cycle chemistry and boiler types have been established by EPRI (2-4) and by ASME (5,6). The sample effluent from the cation exchange column also may be used, and in some cases is preferred, for ion chromatography or other anion measurements.1.1 This practice describes continuous sample conditioning by hydrogen ion exchange and measurement by electrolytic conductivity. It is commonly known as cation conductivity measurement in the power industry although it is actually an indication of anion contamination in high purity water samples. Measurements are typically in a range less than 1 μS/cm. 1.2 The actual conductivity measurements are made using Test Method D5391. 1.3 This practice does not provide for separate determination of dissolved carbon dioxide. Refer to Test Methods D2186 and D4519. 1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Standard Practice for On-Line Determination of Cation Conductivity in High Purity Water
Cation conductivity provides one of the most sensitive and dependable on-line means of detecting anionic contamination in the boiler/steam cycle, such as chlorides, sulfates, nitrates, bicarbonates, and organic acids, such as formic and acetic. High sensitivity is provided by intentionally eliminating the pH adjusting treatment chemical(s), for example, ammonia and amines, from the sample and converting remaining salt contaminants into their acid forms which are approximately three times as conductive. Guidelines on cation conductivity limits for various cycle chemistry and boiler types have been established by EPRI (2-4) and by ASME (5,6). The sample effluent from the cation exchange column also may be used, and in some cases is preferred, for ion chromatography or other anion measurements.1.1 This practice describes continuous sample conditioning by hydrogen ion exchange and measurement by electrolytic conductivity. It is commonly known as cation conductivity measurement in the power industry although it is actually an indication of anion contamination in high purity water samples. Measurements are typically in a range less than 1 S/cm.1.2 The actual conductivity measurements are made using Test Method D 5391.1.3 This practice does not provide for separate determination of dissolved carbon dioxide. Refer to Test Methods D 2186 and D 4519.This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Standard Practice for On-Line Determination of Cation Conductivity in High Purity Water
Free halogens will react with any residual moisture in a solvent to form acid. These acids can cause corrosion to process and storage equipment used for halogenated solvents. The presence of free halogens in halogenated solvents is often an indication that the stabilizers in the solvent system are breaking down. This test method provides a means of detecting the presence of free halogens in halogenated solvents and their admixtures. 1.1 This test method covers the evaluation of free halogens in halogenated organic solvents and their admixtures. 1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Standard Test Method for Free Halogens in Halogenated Organic Solvents and Their Admixtures
本標(biāo)準(zhǔn)規(guī)定了聚氨酯預(yù)聚體或中間產(chǎn)物中異氰酸酯基(NCO)含量的測(cè)定方法。 本標(biāo)準(zhǔn)適用予聚氨酯預(yù)聚體或中間產(chǎn)物中異氰酸酯基含量的測(cè)定。 本標(biāo)準(zhǔn)試樣中二異氰酸酯有一定的毒性(如2,4甲苯二舁氰酸酯的允許濃度TLV為O.02 ppm,為避免吸入其蒸汽,防止皮膚與其直接接觸,分析過(guò)程需要在良好的通風(fēng)下進(jìn)行。
Determination of isoamyl ester group content in polyurethane prepolymer
この規(guī)格は,高純度試薬の試験に関する共通事項(xiàng)について規(guī)定する。ただし,この規(guī)格と個(gè)別規(guī)格との間に相違がある場(chǎng)合には,個(gè)別規(guī)格によるものとする。
General rule for test methods of highly purified reagents
Information processing; Magnetic disk for data storage devices; 160 000 flux transitions per track, 356 mm (14 in) outer diameter
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