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/>5.一般情況下，標準曲線(xiàn)的相關(guān)系數r值應在0.990以上，如果所標定的標準曲線(xiàn)的r值低于0.990，說(shuō)明標準配制有問(wèn)題或比色操作不規范，應仔細分析，逐一排除。 <br /> </div><div>6.消解比色管必須保持潔凈，避免用手觸及透光面，管子置入比色計前如管外壁掛有溶液，應用吸水性強的軟紙擦拭干凈，以免造成零點(diǎn)漂移及腐蝕儀器。 <br /> </div><div>7.實(shí)驗中所用試劑皆為強酸，切勿直接接觸防止意外燒傷。消解時(shí)，切記罩上防護罩，以免發(fā)生意外造成對儀器及操作者的傷害。</div> </div> <div id="hvv7dln" class="ly_PrevNext"> <ul> <li>上一篇：<a href="/jsshengaohua-Article-771786/">便攜式cod測定儀有哪些功能</a></li> <li>下一篇：<a href="/jsshengaohua-Article-753597/">cod氨氮測定儀主要有七個(gè)特點(diǎn)</a></li> </ul> </div> </div>   <div id="xlzptxh" class="foot_box"> <div id="xvj77dt" class="footCon"> <div id="h7rxjjp" class="foot_t w1300"> <div id="hbdzfhd" class="foot_lv"> <div id="bpjh5t7" class="foot_logo"><img src="/skins/257424/images/foot_logo.png" /></div> <div id="7hhxvt7" class="foot_nav"> <ul> <li><a href="/">首頁(yè)</a></li> <li><a href="/products.html">產(chǎn)品中心</a></li> <li><a href="/aboutus.html" rel="nofollow">關(guān)于我們</a></li> <li><a href="/news.html">新聞中心</a></li> <li><a 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