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                                                                                                                                速測試劑盒
                                                                                                                                首頁  -  快速檢測試劑  -  速測試劑盒

                                                                                                                                食醋總酸測定試劑

                                                                                                                                資料添加整理中...

                                                                                                                                產品描述

                                                                                                                                食醋總酸測定試劑盒使用說明


                                                                                                                                【檢測原理】 食醋中主要成分是乙酸,含有少量其他有機酸。國標規定:每100mL食醋中總酸含量應≥3.5g。本試劑盒利用試劑與總酸反應呈現紅~棕紅色的原理,采用國標法,根據所消耗的測定液滴數計算樣品中的總酸含量是否與成品醋標簽上標示的總酸含量一致。適用于食醋中總酸的現場快速檢測。

                                                                                                                                【規    格】25次。

                                                                                                                                【貯    藏】 常溫,避光。

                                                                                                                                【包    裝】 1. 食醋總酸測定液2瓶   2.食醋總酸顯色劑1瓶。

                                                                                                                                【參考標準】 國家標準GB2719-81,GB18187-2000

                                                                                                                                【生產日期】

                                                                                                                                【有 效 期】12個月。

                                                                                                                                【使用方法】

                                                                                                                                取1.0mL樣品到10 mL比色管中,加水到10.0mL刻度,蓋蓋后混勻,從中取1.0mL放入另一支比色管或試管中,加4食醋總酸顯色劑,然后用食醋總酸測定液進行滴定,每滴一滴溶液后都要搖動幾下,直到溶液變為紫紅色(深色醋變為棕紅色)時停止滴定,記錄食醋總酸測定液的滴數V,當滴數大于12滴即為合格產品

                                                                                                                                【結果計算】總酸(克/100毫升)=測定液滴數(V)*0.3(克/100毫升);

                                                                                                                                【注意事項】

                                                                                                                                1 滴定時注意滴瓶的直立性以減少誤差。

                                                                                                                                2本方法測定的結果與國家標準規定值或樣品標簽標示值僅差1滴滴定液時,應考慮到現場操作誤差的存在,對未達標樣品,應送實驗室精確定量。

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