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/></p><p>　　1、被測溶液性質(zhì)。</p><p>　　溶液性質(zhì)各不相同，同樣的電極觸摸不同的測驗(yàn)液，有的測驗(yàn)液單一，無污染，如一般的紡織品，有的測驗(yàn)液具有強(qiáng)酸強(qiáng)堿性，這樣就容易縮短電極的運(yùn)用壽數(shù)，比如說正常測驗(yàn)<strong>PH計(jì)</strong>可以用一年，但常常測驗(yàn)強(qiáng)酸強(qiáng)堿的PH計(jì)可能用半年就不行了。</p><p>　　2、使用時(shí)間。</p><p>　　長期不運(yùn)用或許運(yùn)用頻率高都會(huì)影響電極的壽數(shù)，如有的實(shí)驗(yàn)室是一天運(yùn)用一次，乃至有時(shí)幾天不運(yùn)用一次，有的是每天不斷的在運(yùn)用。那么每天運(yùn)用頻率高的和不常常運(yùn)用的PH計(jì)都有可能減少其運(yùn)用壽數(shù)，合理運(yùn)用‘不過勞，不閑置’的<strong>PH電極</strong>才是的延長壽數(shù)的方式。</p><p>　　3、產(chǎn)品是否合格。</p><p>　　電極如果在剛用沒有幾天就發(fā)現(xiàn)測驗(yàn)就不精確了，可能是電極類型選擇不對或許運(yùn)用者野蠻運(yùn)用，哪怕運(yùn)用的頻率很低，這種狀況供應(yīng)商也是不負(fù)責(zé)退換貨的。另一種狀況是PH電極剛用不久就壞了或許測驗(yàn)不準(zhǔn)，數(shù)據(jù)不穩(wěn)定，再者電極也常常運(yùn)用，外觀保養(yǎng)的很好，平常維護(hù)也是嚴(yán)格按說明書要求做的，那么就可能是電極質(zhì)量問題，供應(yīng)商是應(yīng)該負(fù)責(zé)退貨的。</p><p>　　一般來說，一支電極的正常使用時(shí)間為半年至一年，運(yùn)用條件差的<strong>工業(yè)PH計(jì)</strong>電極時(shí)間可能更短一些。電極壽命除了由生產(chǎn)日期決定外，其運(yùn)用和保養(yǎng)也決定著電極的壽命。</p> </div> <div id="tq6ztn8r" class="ly_PrevNext"> <ul> 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