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/><div>　　將測試筆電極浸入PH值為6.86(25℃下)的混合磷酸鹽標(biāo)準(zhǔn)緩沖液中，并輕輕搖動(dòng);</div><div>　　用小螺絲刀調(diào)整校正電位器直到顯示值與標(biāo)準(zhǔn)緩沖溶液在環(huán)境溫度下的PH值相符;</div><div>　　電極插入PH4.01的磷笨二甲酸氫鉀或PH9.18的硼砂標(biāo)準(zhǔn)緩沖溶液中;</div><div>　　顯示值與緩沖溶液的PH值相比應(yīng)在誤差允許范圍內(nèi)。<br /> </div><div>　　<strong>筆式ph計(jì)</strong>操作步驟及方法：<br /> </div><div>　　取下保護(hù)套;</div><div>　　先用蒸餾水清洗PH計(jì)的電極，并用濾紙將附在電極上的水分吸干;</div><div>　　接通位于電池倉上的開關(guān);</div><div>　　將PH計(jì)電極插入被測液體，直到液體浸到略低于“浸沒線”，條件允許，可使溶液浸到略高于“浸沒線”的位置;</div><div>　　輕輕地?cái)嚢枞芤捍龜?shù)值穩(wěn)定后，讀取顯示值;</div><div>　　使用完畢，清洗電極，關(guān)掉開關(guān)，套上保護(hù)套。<br /> </div><div>　　<strong>筆式ph計(jì)</strong>更換電池的方法：<br /> </div><div>　　將筆上面有開關(guān)的黑色板，輕輕拉出來，不要拉斷電線，可看見4顆1.5V電池，拉出更換即可;</div><div>　　注意電池極性及選擇相同型號(hào)的電池;</div><div>　　電極插入待測液或校正緩沖液時(shí)，不可超過測試筆上標(biāo)示大高度。</div><div>　　若電極放置時(shí)間很久,且敏感球泡暴露在空氣中,因電極干燥,使得響應(yīng)變慢且顯示值不穩(wěn)定.這時(shí),應(yīng)將電極浸入蒸餾水中活化幾個(gè)小時(shí);</div><div>　　為了改善性能,每星期至少一次將PH計(jì)電極插入蒸餾水中,每次幾分鐘;</div><div>　　蛋白質(zhì)沉淀物(如測牛奶\乳酪等)要浸入胃蛋白酶和鹽酸溶液中進(jìn)行消除處理;這種溶液在使用前準(zhǔn)備好,使用后,將電極浸入這種溶液幾個(gè)小時(shí),然后用清水沖洗干凈,接著浸入蒸餾水幾個(gè)小時(shí);</div><div>　　油脂膜同樣影響敏感球泡的測量,李除去這薄膜,用75%的醇溶液沖洗敏感球泡,再用濾紙擦干,用水沖洗好,然后浸入蒸餾水中幾個(gè)小時(shí)。</div> </div> <div id="v5zhrhv" class="ly_PrevNext"> <ul> <li>上一篇：<a href="/szhcy-Article-1733168/">越來越多的人都用上了EDI超純水設(shè)備,你還在猶豫嗎?</a></li> <li>下一篇：<a href="/szhcy-Article-1667174/">影響反滲透膜阻垢劑作用的3大關(guān)鍵因素</a></li> </ul> </div> </div>   <div id="bbxhtlr" class="foot_box"> <div id="ld5l7pd" class="foot_t"> <div id="hjlxvbh" class="w1200"> <a href="/">網(wǎng)站首頁</a>　|　<a href="/aboutus.html">關(guān)于我們</a>　|　<a href="/products.html">產(chǎn)品中心</a>　|　<a 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