1、 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2009 by Navistar, Inc. AUGUST 2009 Page 1 of 1 NAVISTAR, INC. CEMS (CORPORATE ENGINEERING MATERIAL SPECI
2、FICATION) NUMBER: CEMS BT-33 TITLE: pH Value Test Adapted from ORD JR-OME PD #115 dated 21 November 1956. CURRENT ISSUE DATE: August 2009 WRITTEN/REVIEWED BY: Materials Engineering APPROVED BY: Materials Engineering SUPERSEDES ISSUE OF: October 2001 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED F
3、OR CURRENT REVISION This specification may involve hazardous materials, equipment, and procedures. This specification does not purport to address all of the safety issues associated with its use. The user is responsible to consult appropriate safety and health practices and to determine the applicab
4、ility of regulatory limits prior to use. Change Notice: Replaced “International Truck and Engine Corporation” with “Navistar, Inc.” per corporate directive. 1.0 SCOPE This method covers a procedure for determining the pH value of mixtures of engine cooling system stopleak compounds in distilled wate
5、r and ethylene glycol base antifreeze. 2.0 APPARATUS 2.1 Apparatus required in ASTM D 1287, Test for pH of Concentrated Engine Antifreezes. 2.2 Balance with a sensitivity of 0.1 gram. 2.3 Graduated cylinder, 200 milliliters. 3.0 MATERIALS 3.1 Materials required to perform ASTM D 1287 Test for pH of
6、Concentrated Engine Antifreezes. 3.2 Screw-cap wide mouth glass jar, 8-ounce. 3.3 Distilled water. 3.4 Antifreeze mixture consisting of equal parts distilled water and CEMS B-1, Antifreeze, Single Phase, Ethylene Glycol Base. 4.0 PROCEDURE 4.1 Place 5 + 0.1 gram samples of well mixed stopleak compou
7、nd into two 8-ounce screw-cap wide mouth glass jars, and add 200 milliliters of distilled water to one jar and 200 milliliters antifreeze mixture to the other jar. 4.2 Cover the jars and shake the contents until thoroughly dispersed. 4.3 Allow the mixtures to stand for 10 minutes. 4.4 Determine the pH values as directed in section 7 (b), ASTM D 1287. 5.0 REPORT Report the values obtained as “pH in Distilled Water” and “pH in International Antifreeze Solution”.
