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　　觀(guān)察鐵路煤炭運輸防凍液的外觀(guān)，識別其氣味，并做出直觀(guān)的判斷。防凍液應透明，無(wú)沉淀和無(wú)異味。如果外觀(guān)渾濁且氣味異常，表明防凍劑嚴重劣化，請立即停止使用。<br /> 　　三、pH值檢測<br /> 　　pH值是冷凍液pH值的指標，金屬在酸性溶液中迅速腐蝕。為了防止這種腐蝕的發(fā)生，添加到防凍劑液中的添加劑是堿性物質(zhì)，以確保防凍液的pH值在7和11之間；使用的路煤炭運輸防凍液在高溫下持續氧化形成酸性。物質(zhì)消耗部分防腐劑可以以降低pH值，液體逐漸變?yōu)樗嵝?，可以通過(guò)pH試紙在現場(chǎng)測試防凍液的pH值。當pH值小于7時(shí)，應停止使用防凍液。<br /> 　　上述內容是小編為大家所介紹的如何檢測煤炭運輸防凍液的質(zhì)量好壞，相信大家對此也已經(jīng)都有所了解了。希望大家在詳細了解這些產(chǎn)品知識之后，能夠對產(chǎn)品進(jìn)行更加合理、有效的操作以及使用。<br /> <div> <br /> </div></div> <div id="sw4meqq" class="page" style="clear:both;"> 上一條：<a href="http://m.tllngy.com/xwzx/gsxw/show453.html">煤炭運輸抑塵劑的稀釋方法</a><br> 下一條：<a href="http://m.tllngy.com/xwzx/gsxw/show451.html">采暖系統防凍液的選擇</a><br> </div> <h4 class="related"><span style="font-weight:bold;height:30px;line-height:30px;font-size:13px; color:#fff; padding-left:10px">相關(guān)資料</span></h4> <ul class="related-list"> <li><a target="_blank" title="熱泵采暖系統專(zhuān)用防凍液的產(chǎn)品特性" 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