食品硼砂測定儀產(chǎn)品及廠家
一、檢測方法 1、樣品處理 取20g待測樣品，切碎或研碎混勻后取2g于“樣品杯”中，加入20ml蒸餾水或純凈水，浸泡10－15min，其間振蕩數(shù)次，待測。 2、空白測試 每批檢測須做一個空白對照，既吸取0.1ml蒸餾水或純凈水于35ml蒸發(fā)皿或小燒杯中，加入0.4ml檢測液，輕輕搖勻后，置55℃水浴，蒸干后，繼續(xù)維持5min，取出冷卻至室溫。加入2.5ml95%乙醇溶解后，檢測時以該溶液作為測試的參比溶液，對儀器進(jìn)行調(diào)零。
更新時間:2025-09-08
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