Astm d4739 Historical ASTM D4739-17 Red Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titration (Standard + Redline PDF Bundle) 1. 5. Save costs with subscription plans and donation opportunities. Aichert D4739 Training Online - Username/PasswordAbout the Course This test method covers a procedure for the determination of basic constituents in petroleum products and new and used lubricants. 0 An American National Standard Designation: D 4739 – 02 Standard Test Method for Base Number Determination by Potentiometric Titration1 This standard is issued under the fixed designation D 4739; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. ASTM D4739 Base Number Determination by Potentiometric Hydrochloric Acid Titration Some additives in lubricating oils are basic, and absorb acids that form due to oxidation. Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titration Sep 30, 2014 · AN and BN are fundamental measures of oil condition, these being routinely used to monitor relative changes in acidity or reserve alkalinity, respectively, of new and in-service oils. The test method resolves these constituents into groups having weak-base and strong-base ionization properties, provided the dissociation constants of the more strongly basic compounds are at least 1000 times that of the next weaker groups. The test method resolves these constituents into groups having weak-base and strong-base ionization properties, provide Mar 2, 2021 · Scope1. Dec 9, 2024 · Work Item ASTM WK93109 Revision of D4739-23 Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titration Rationale Revision to D4739 parameter settings to produce equivalent results and decrease test run time. Nov 12, 2025 · ASTM D4739-11 (2017) 采用盐酸电位滴定法测定碱值的标准试验方法 Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titration Historical ASTM D4739-11 (2017) Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titration 1. Nov 29, 2022 · Currently, there are two ASTM test methods under the jurisdiction of Committee D02 used for determining base number by potentiometric titration: Test Method D2896 and Test Method D4739. This test method may or may not titrate these weak acids. ASTM D4739-23 | 2023 edition pdf:Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titration,ASTM International, 07/01/2023 ASTM D4739 – Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titration Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titrationstandard by ASTM International, 12/01/2017 Mar 27, 2025 · Use ASTM D2896 for fresh oils and ASTM D4739 for in-service (used) oils. 1 本测试方法涵盖了石油产品以及新的和用过的润滑剂中基本成分的测定程序。 该测试方法将这些成分分解为具有弱碱和强碱电离特性的组，前提是更强碱性化合物的解离常数至少是接下来的较弱组的解离常数的1000倍。 Base Number According to ASTM D4739-05 Method for the determination of the base number BN in oil by titration with hydrochloric acid in 2-propanol according to ASTM D4739-05. The test method resolves these constituents into groups having weak-base and strong-base ionization properties, provide Aug 1, 2023 · 5. On the other hand, D4739 measures the ‘hard base’ such as that from over-based detergents. Generally, the Base Number test is supposed to determine how much reserve alkalinity is left and how fast is it being depleted. There are subtle, yet important differences to consider when looking at Total Base Number data from each. The test method resolves these constituents into groups having weak-base and strong-base ionization properties, provide www. 1 New and used petroleum products can contain basic constituents that are present as additives. The titration speed is precisely adjusted to the reaction rate by control. May 31, 2022 · ASTM D4739, on the other hand, is reserved for USED / IN-SERVICE oils and is most commonly used by oil testing laboratories. Jul 1, 2023 · ASTM D4739-23 Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid TitrationStandard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titration May 15, 2011 · ASTM International - ASTM D4739-11 Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titration Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titrationstandard by ASTM International , 02/01/2008 Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titrationstandard by ASTM International , 06/01/2017 Method for the potentiometric determination of the base number (BN) in a motor oil sample according to ASTM D4739. Accredited to ISO 17034. Aug 1, 2023 · Base numbers obtained by this test method shall not be related to base numbers obtained by another test method such as Test Method D2896. Jun 1, 2017 · ASTM International - ASTM D4739-11 (2017) Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titration ASTM D4739 – Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titration Description: Significance and Use 5. Designation: D4739 − 23 Standard Test Method for Base Number Determination ASTM D4739-23 Red Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titration (Standard + Redline PDF Bundle) Another method ASTM D4739 is also accepted for measuring TBN in used oils. D4739 Training Online - Username/PasswordAbout the Course This test method covers a procedure for the determination of basic constituents in petroleum products and new and used lubricants. The commonly used American Society for Testing and Materials (ASTM) titrimetric methods, D2896 and D4739 for BN and D664 for AN, 1 – 3 are problematic in terms of cost, maintenance, reproducibility, and Aug 1, 2021 · The ASTM D4739 base number method is used to determine basic petroleum products' constituents and new or used lubricants. 1 本测试方法涵盖了石油产品以及新的和用过的润滑剂中基本成分的测定程序。 该测试方法将这些成分分解 5 days ago · 本指导书详细说明ASTM D4739-23标准方法，通过电位盐酸滴定法测定石油产品和润滑油中碱性成分的碱值。涵盖仪器准备、试剂配置、滴定步骤及结果计算，适用于新油和在用润滑油的碱值跟踪分析。 1. 00$68. 2 When the base number of in-service or at-term oil is required, this test method is preferred because in many cases, especially for internal combustion engine oils, weakly basic degradation products are possible. Manufactured in ISO 9001 facility. 4 In ASTM Interlaboratory Crosscheck Programs for both new and used lubricants, historically Test Method D2896 gives a higher value for base number. ASTM methods, including D664, D974, D2896 and D4739, are the current industry standard methods for measuring the acid and base number. Using a weaker acid, it only identifies alkalinity from metallic elements like calcium, magnesium, and zinc. Test Method D2896 is for new oils and is used in setting specifications since it is more accurate than Test Method D4739. Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titration. Standard Test Method for Base Number Determination by Potentiometric Titrationstandard by ASTM International, 12/10/2002 Feb 7, 2018 · 5. This test method resolves these constituents into groups having weak-base and strong-base ionization properties, provided the dissociation constants of the more strongly basic compounds are at least 1000 Aug 1, 2023 · 5. Ensure optimal performance! This test method determines the basic constituents in petroleum products and lubricants by potentiometric titration with hydrochloric acid. Using this prescribed method, industries can keep track of lubricant Jun 30, 2023 · ASTM D4739-23 - SIGNIFICANCE AND USE 5. This test ASTM D4739-17 - SIGNIFICANCE AND USE 5. Measurements are made by addition of an acid to the lubricating oil, then monitoring the amount of acid required to neutralize the base content of the lubricant. com Jun 19, 2020 · ASTM D4739 / ASTM D2896 Scenario An important part of the discussion is this essential fact- not all the tests performed on a lubricants certificate of analysis are pertinent for condition monitoring of in-service lubricants. 5-2. They Dec 31, 2010 · D4739 Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titration> Apr 28, 2023 · Total Base Number (TBN). In addition, they use May 14, 2011 · ASTM D4739-11 - SIGNIFICANCE AND USE New and used petroleum products can contain basic constituents that are present as additives. D4739 We have two ASTM Base Number analysis testing methods: D2896 and D4739. 1 day ago · 标准号 ASTM D4739-96 发布 1996年 发布单位 美国材料与试验协会 替代标准 ASTM D4739-02 当前最新 ASTM D4739-23 适用范围 1. Designation: D4739 - 17 INTERNATIONAL Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titrationl This standard is issued under the fixed designation D4739; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. Test Method D4739 shall be used Sep 30, 2025 · The ASTM D4739 standard mandates a uniform procedure of testing the base number of petroleum products, primarily lubricating oils, using potentiometric hydrochloric acid titration. As a result, Test Method D2896 will titrate salts of weak acids (soaps), basic salts of polyacidic bases, and weak alkaline salts of some metals. It covers base numbers up to 250 and applies to new and used lubricants, but not to colorimetric methods. These titration-based methods are slow and expensive to execute, require significant volumes of sample and solvent, and are prone to interferences. D4739–02 7 ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. Standard Test Method for Base Number Determination by Potentiometric Titrationstandard by ASTM International , 12/10/2002 一、标准概述 ASTM D4739-17《Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titration 》，第一版发布于1981年，上一版发布于2011年。该测试方法是作为测试方法 ASTM D664 的前碱基部分的替代方法而开发的。 SH/T 0688 等效采用本标准。 在新的和使用的润滑剂中，可以认为具有基本性质的 Shop GFS Chemicals Titration Solvent, ASTM D4739, Section 7. This test ASTM D4739 – 電位差式塩酸滴定による塩基価決定のための標準試験法 Categories: ASTM, Standards Tags: ASTM Volume 05. The test method resolves these constituents into groups having weak-base and strong-base ionization properties, provide Jul 1, 2023 · ASTM D4739-23 Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titration standard by ASTM International , 07/01/2023 View all product details Most recent ASTM D4739-23 Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titration 1. 2, this test method uses a weaker acid to titrate the base than Test Method D2896, and the titration solvents are also different. Quality control in lubricants. D2896 measures the Total Base and includes all sources of Base Number including detergent, dispersant, antiwear and antioxidant additives. D4739 Standard Test Method for Base Number Determination by Potentiometric Titration> Aug 1, 2023 · 5. 00 Add to Cart Description ASTM D4739 Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titration This test method covers a procedure for the determination of basic constituents in petroleum products and new and used lubricants. Aug 16, 2017 · Scope1. 1 This test method covers a procedure for the determination of basic constituents in petroleum products and new and used lubricants. 0 points lower, based on the results I've seen. Scope1. ASTM D4739 – Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titration Significance and Use 5. normsplash. Nov 21, 2017 · We have two ASTM Base Number analysis testing methods: D2896 and D4739. Download Safety Data Sheet PDFs 1. This is a great training webinar. 2,000+ materials featuring highly accurate reference values and low uncertainty estimates. 润滑油ASTM测试方法与中国标准GB对照 ASTM美国材料实验协会 (American Society of Testing Materials ) 与中国国家标准GB对润滑油测试的方法对照。 Best prices on ASTM D4739-23 in PDF and print format. 1 This test method covers a procedure for the determination of basic constituents in petroleum products and lubricants (Note 1). 1 This test method covers a procedure for the determination of basic constituents in petroleum products and lubricants (Note 0). 15 at Thomas Scientific, your trusted partner in Science. Aug 2, 2002 · ASTM D2896 is normally used for new oils, and ASTM D4739 is normally utilized to test used engine oils. The relative amount of these materials can be determined by titration with acids. The base number is a measure of the amount of basic substances in the We would like to show you a description here but the site won’t allow us. Dec 18, 2014 · Subscribe to updates for TOTAL BASE NUMBER FOR ASTM D4739 SDS by Avantor Performance Materials, Inc at SDS Manager. Apr 19, 2018 · The value obtained from this test is the number reported on most technical data sheets. The test method resolves these constituents into groups having weak-base and strong-base ionization properties, provide The titration with titrant starts, once the oil sample is dosed into the reagent. In addition to ASTM D2896, the Total Base Number of a lubricant can be tested by the procedure detailed in ASTM D4739. The titrant in D4739 is a milder acid than in D2896, hydrochloric vs perchloric, which can result in lower TBN results if there are weak bases present in the sample that the hydrochloric acid will not neutralize. Test Method D2896 will titrate these, thus giving a false value of essential basicity. Test Method D2896 uses a stronger acid and a more polar solvent system than Test Method D4739. It is primarily applied for the determination of base depletion for in-service lubricants. 2 As stated in 1. If you test the same batch of used oil using both methods, the ASTM D4739 test will yield a low number - typically 1. It is sometimes used as a measure of lubricant degradation in Explore ASTM D4739-2023 for precise base number determination in petroleum products and lubricants using potentiometric titration. ASTM D4739 is the test favored by oil analysis labs on used oil samples. Standard Test Method D4739-02 for determining base number in petroleum products by potentiometric titration. The measurement of base is reported as Jul 1, 2023 · ASTM D4739 February 1, 2008 Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titration Oct 31, 2005 · ASTM D4739-05 - SCOPE 1. This test method resolves these constituents into groups having weak-base and strong-base ionization properties, provided the dissociation constants of the more strongly basic compounds are at least 1000 Best prices on ASTM D4739-23 in PDF and print format. Jul 14, 2023 · Work Item ASTM WK87157 Revision of D4739-17 Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titration Rationale This standard is due for reapproval. The test method resolves these constituents into groups having weak-base and strong-base ionization properties, provide ASTM D4739 – Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titration Description: Significance and Use 5. 1 本测试方法涵盖了石油产品和润滑油中基本成分的测定程序（注1）。该测试方法将这些成分分解为具有弱碱和强碱电离特性的组，前提是更强碱性化合物的解离常数至少是接下来的较弱 Oct 14, 2024 · GSO ASTM D4739:2024 Scope 1. Sep 13, 2025 · 标准号 ASTM D4739-23 中文首页 发布 2023年 总页数 8页 发布单位 美国材料与试验协会 当前最新 ASTM D4739-23 引用标准 ASTM D1193 ASTM D2896 ASTM D4057 ASTM D4175 ASTM D4177 ASTM D664 ASTM D974 本体 滴定法 适用范围 1. A number in parentheses indicates the year of last Standard Test Method for Base Number Determination by Potentiometric Titrationstandard by ASTM International , 12/10/2002 Scope1. The base number is a measure of the amount of basic substances in the Feb 1, 2008 · An interlaboratory study was conducted by fourteen labs which tested eighteen materials to establish a precision statement for test method D4739. This test method resolves these constituents into groups having weak-base and strong-base ionization properties, provided the dissociation constants of the more strongly basic compounds are at least 1000 times than that of the next weaker groups. 1. The user has to enter the sample weight into the menu. This test This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. Base number refers to the amount of alkaline reserve of a lubricant, and it is a crucial factor in countering the acidic fuel combustion products. In addition to ASTM D2896, the Total Base Number of a lubricant can be Meet 40 CFR 1090 requirements with standard and multi-property certified reference materials. 3. The base number is a measure of the amount of basic substances in the oil always under the conditions of the test. We cover both of the popular ASTM methods, ASTM D2896-21 and ASTM D4739-17. D2896 vs. Currently, there are two ASTM test methods under the jurisdiction of Committee D02 used for determining base number by potentiometric titration: Test Method D2896 and Test Method D4739. Titration Solvent, ASTM D4739, ASTM, for general laboratory use. 1 本测试方法涵盖了石油产品以及新的和用过的润滑剂中基本成分的测定程序。 该测试方法将这些成分分解为具有弱碱和强碱电离特性的组，前提是更强碱性化合物的解离常数至少是接下来的较弱组的解离常数的1000倍。 Results 96d ASTM D 4739-87 13-05-1992 13:36 SW Version 2. They Nov 1, 2005 · Find the most up-to-date version of ASTM D4739-05 at GlobalSpec. Technically speaking, the primary differences between D4739 and D2896 are D4739 uses hydrochloric acid as the titrant and D2896 uses perchloric acid. Conforms to ASTM D664, D2896, D4739; ISO 6619, 3771; and related specifications Complete measuring system for the determination of TAN/TBN Dec 10, 2002 · GlobalSpec's EngAi BotASTM International - ASTM D4739-02 Standard Test Method for Base Number Determination by Potentiometric Titration ASTM D4739-02 - SCOPE 1. It is sometimes used as a measure of lubricant degradation in Apr 4, 2012 · ASTM D4739 is the test favored by oil analysis labs on used oil samples. They are both used throughout the petroleum industry. They 21-04-2005 17:28 Author TAN ASTM 4739 A. They Sep 23, 2024 · What are ASTM D2896 and ASTM D4739? ASTM D2896 and ASTM D4739 are both potentiometric titration methods used for determination of basic constituents (alkalinity reserve) in petroleum products. Jul 1, 2023 · ASTM International - ASTM D4739-23 Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titration Rationale Revision to D4739 parameter settings to produce equivalent results and decrease test run time. They Aug 1, 2023 · 5. The test method resolves these constituents into groups having weak-base and strong-base ionization properties, provide ASTM D4739-17 Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titration ASTM International , 12/01/2017 Publisher: ASTM File Format: PDF $34. 02 Total Views: 616 Daily Views: 2 0 Comments Jul 14, 2017 · D4739 Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titration> Jan 1, 2023 · ASTM D4739-23的发布历史信息,1. Determination of base value of petroleum products (perchloric acid potentiometric titration method) Jun 18, 2025 · ASTM D4739-17的标准全文信息,1. ekcn bvfk sulrxe jflyvxa mcjw zdloim gdqtb pwia tznboswj ekneku cqcgb vhwus etaa ouvqb lghhmy