1.1本规程包括测定塑料膜对表面生长藻类附着和增殖的敏感性。 1.2以国际单位制为单位的数值应视为标准。括号中的英寸-磅单位仅供参考。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 ====意义和用途====== 水体，如游泳池、人工池塘和灌溉沟渠通常内衬塑料薄膜。藻类往往在适当的大气条件下生长在这样的水体中，它们可以在薄膜上产生粘稠难看的沉积物。本文所述方法可用于评估膜中加入的各种添加剂对藻类表面生长的防护程度和持久性。

1.1 This practice covers the determination of the susceptibility of plastic films to the attachment and proliferation of surface-growing algae. 1.2 The values in SI units are to be regarded as the standard. The inch-pound units given in parentheses are for information only. 1.3 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. ====== Significance And Use ====== Bodies of water, such as swimming pools, artificial ponds, and irrigation ditches often are lined with plastic films. Algae tend to grow in such bodies of water under the proper atmospheric conditions, and they can produce slimy and unsightly deposits on the film. The method described herein is useful in evaluating the degree and permanency of protection against surface growth of algae afforded by various additives incorporated in the film.