<p style="font-size: medium; max-inline-size: 100%; margin-bottom: 0px; clear: both; min-height: 1em; cursor: text; line-height: 1.75em; overflow-wrap: break-word !important; outline: none 0px !important;"><span style="max-inline-size: 100%; margin: 0px; padding: 0px; cursor: text; font-size: 15px; overflow-wrap: break-word !important; outline: none 0px !important;">　　据国外研究,品级实物标准适宜存放的环境条件是:相对湿度50%,温度10℃。一般来说,实物标准会随着环境条件的变化、存放时间的增长发生一定的变化。我国品级实物标准一般都存放在常温条件下,由于四季温湿度的自然变化,棉花会发生自然变化,因此棉花品级实物标准有效期为1年。</span></p><p style="font-size: medium; max-inline-size: 100%; margin-bottom: 0px; clear: both; min-height: 1em; cursor: text; overflow-wrap: break-word !important; outline: none 0px !important;"><br style="max-inline-size: 100%; margin: 0px; padding: 0px; overflow-wrap: break-word !important; outline: none 0px !important;"></p><p style="font-size: medium; max-inline-size: 100%; margin-bottom: 0px; clear: both; min-height: 1em; cursor: text; line-height: 1.75em; overflow-wrap: break-word !important; outline: none 0px !important;"><span style="max-inline-size: 100%; margin: 0px; padding: 0px; cursor: text; font-size: 15px; overflow-wrap: break-word !important; outline: none 0px !important;">　　标准启封后,应逐盒检查,如受潮,应先放在通风透气处。标准不适宜放置在阳光直射处、高温处或地上,以防受热、受潮而发生变异。存放实物标准时,盒与盒应平放整齐,不能倾斜或倒置。移动或打开盒盖时,动作要轻,以免标准形态变异、杂质挪位。阴雨天使用实物标准时,动作要快,避免标准实物受潮。在湿度较大的地区,保管实物标准时可借助干燥剂吸湿。</span></p><section class="_135editor" data-role="paragraph" id="autoparagraph" style="font-size: medium; max-inline-size: 100%; margin: 0px; padding: 0px; border: 0px none; z-index: 0; overflow-wrap: break-word !important; outline: none 0px !important;"><p style="max-inline-size: 100%; margin-bottom: 0px; clear: both; min-height: 1em; cursor: text; overflow-wrap: break-word !important; outline: none 0px !important;"><br style="max-inline-size: 100%; margin: 0px; padding: 0px; font-family: 微软雅黑, &quot;Microsoft YaHei&quot;, sans-serif; font-size: 17px; caret-color: rgb(255, 0, 0); overflow-wrap: break-word !important; outline: none 0px !important;"></p></section>