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    干洗连锁加盟干洗店要知道洗净率是洗衣机的主要指标之一,人们绞尽脑汁也没有找到一个理想的考核指标和试验方法来,作为相对考察的需要,世界各国及国际电工委员会都规定了试验方法标准。

     干洗机洗净率各标准的内容不同但原理是相同的,主要内容是控制影响洗净效果的因素,统一试验条件,大体上可分为如下几项内容:

  (1)规定人工污染布,主要包括污染布的质地、污染源、污染工艺方法及污染布的检查和保管及使用期等,其主要目的是要使污染布的质地、污染源和污染程度及期限趋于一致,以尽可能使污染后的反射率趋于一致,使指标对比时趋于合理、公正。

  (2)规定标准洗涤物,主要包括洗涤物的质地、规格、数量、污染布的相对分布位置等,其目的是使填充量、测点分布情况趋于一致并反映真值。

  (3)规定洗涤剂成份、含量及用量。

  (4)规定试验用水的水质、水量、水温。

  (5)规定洗涤工艺,主要包括洗涤和漂洗的时间和次数。

  (6)规定洗涤后的污染布的整理方法。

  以上各条都是对试验条件加以规定,即使如此,仍不能保证试验结果的再现性。所以IEC及一些国家都规定了以标准洗衣机作为参比机,以洗净比(标准洗衣机与被试样机在相同试验条件上测得的洗净度之比)表示洗净效果的方法,并注明只有在必要时才采用。事实上,也就是把除了机器之外的所有影响因素都条件化,以求公平公正。显然,这个公平公正是相对的,是理想化了的,因为这些条件是不可能相同的。

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