1.1 These test methods cover determination of the weight per unit area of waterside deposits on heat-transfer surfaces of steam generator tubes. Two test methods are given as follows:

1.2 Neither test method is normally applicable to fire-tube boilers.

1.3 A comparison of the results obtainable with the two test methods is shown in Fig. 1.

1.4 A scope section is provided in each test method. It is the responsibility of the analyst to determine the acceptability of these test methods for each situation.

1.5 This standard does not purport to address 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.