5.1 This practice has been developed to simulate the stress encountered by terminal point-of-use filters under a range of real-world use conditions with emphasis on thermal and pressure swings. Two parts, A and B, are intended to account for more frequent, less extreme use conditions and less frequent, more extreme use conditions, respectively. The purpose of pre-stressing the filters before testing by Test Method F838 is to demonstrate the ability of the filters to retain bacteria as determined by Test Method F838 after exposure to a series of temperature and pressure swings representative of those that may be encountered under actual use conditions.5.2 This practice is not intended to account for effects on filter performance attributable to differences in the quality of the water being filtered that may be encountered under actual use conditions.5.3 This practice is not intended to simulate the very extreme stress associated with systemic remedial procedures, such as thermal or chemical shock, sometimes implemented in premise plumbing systems.1.1 This practice covers terminal point-of-use (POU) filters intended for intermittent use on showers, faucets, and other water use end-point devices that deliver hot and cold potable water.1.2 This practice does not cover in-line filters.1.3 Units—The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.5 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.

定价： 590元 / 折扣价： 502 元 加购物车

1 Scope 1.1 This International Standard is applicable to: - flow-metering devices which are connected, either directly or by means of flexible connecting assemblies, and disconnected by the operator at terminal units of a medical gas pipeline system

定价： 592元 / 折扣价： 504 元

定价： 910元 / 折扣价： 774 元

定价： 455元 / 折扣价： 387 元

Update No. 1 was published as notification that this is now a National Standard of Canada This PDF includes Update No. 1 1 Scope 1.1 This Standard applies to factory-manufactured residential, commercial, and industrial packaged terminal air-cond

定价： 501元 / 折扣价： 426 元

1 Scope This part of ISO 9170 specifies requirements for terminal units intended for use in medical gas pipeline systems in accordance with ISO 7396-1, for use with the following services: - oxygen; - nitrous oxide; - air for breathing; - carbon d

定价： 728元 / 折扣价： 619 元

1 Scope This part of ISO 9170 specifies the requirements and dimensions for terminal units intended for use in anaesthetic gas scavenging disposal systems in accordance with ISO 7396-2. It is intended especially to ensure the type specificity of termin

定价： 774元 / 折扣价： 658 元