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干燥箱和恒溫箱使用方法和注意事項

更新時(shí)間:2011-11-04      點(diǎn)擊次數:1265

    干燥箱用于物品的干燥和干熱滅菌,恒溫箱用于微生物和生物材料的培養。

    這兩種儀器的結構和使用方法相似,干燥箱的使用溫度范圍為50~250℃,常用鼓風(fēng)式電熱以加速升溫。恒溫箱的zui高工作溫度為60℃。

    1.使用方法
    (1)把電源插頭插入電源插座。

    (2)將溫度計插入座內(在箱頂放氣調節器中部)。

    (3)注意觀(guān)察溫度計。當溫度計溫度將要達到需要溫度時(shí),調節自動(dòng)控溫旋鈕,使綠色指示燈正好發(fā)亮,十分鐘后再觀(guān)察溫度計和指示燈,如果溫度計上所指溫度超過(guò)需要,而紅色指示燈仍亮,則將自動(dòng)控溫旋鈕略向反時(shí)針?lè )较蛐D,直調到溫度恒定在要求的溫度上,指示燈輪番顯示紅色和綠色為止。自動(dòng)恒溫器旋鈕在箱體正面左上方。它的刻度板不能做為溫度標準指示,只能做為調節用的標記。

   (4)將電熱絲分組開(kāi)頭轉到1或2位置上(視所需溫度而定),此時(shí)可開(kāi)啟鼓風(fēng)機促使熱空氣對流。電熱絲分組開(kāi)頭開(kāi)啟后,紅色指示燈亮。
 

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