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Distilled water. Mix well by repeated inversion. Dilute 10 ml of this solution to 250 ml with distilled water in a volumetric flask and again mix well by inversion.

Jams-reducing sugar content. Weigh accurately about 3g of jam unto a conical flask,add 50ml water,warm and stir for 10min. filter into a 100ml
volumetric flask,wash the residue into the volumetric flask with a small amount of distilled water. Mix well by repeatedun version. Dilute10ml of this solution to 250 ml with distilled water in volumetric flask and again mix well by inversion

2007-05-15 18:38:50 · 1 個解答 · 發問者 柏村 1 in 社會與文化 語言

1 個解答

蒸餾水. 重複翻轉以均勻混合. 取這溶液 10ml到定量瓶並以蒸餾水稀釋到 250 ml, 然後多次翻轉瓶身以充分混合.

果醬-降低糖的含量. 精量約 3g 的果醬放入錐形瓶內, 加入 50 ml 的水, 加熱並攪拌 10 mins. 過濾到一個 100 ml 的定量瓶內, 以少量的蒸餾水將殘餘物沖洗至定量瓶內. 以翻轉瓶身充分攪拌. 取這溶液 10ml到定量瓶並以蒸餾水稀釋到 250 ml, 然後多次翻轉瓶身以充分混合.

< 實驗步驟? >

2007-05-19 20:19:28 · answer #1 · answered by 凱洛 3 · 0 0

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