应用日本京都电子公司(KEM) MKA-520容量法卡尔费休水分仪测定糖果中水份含量 的 应用资料实例。
因为糖果,巧克力 有固体和液体的形态,所以要加配ADP-344-糖类专用滴定池加热装置
Kyoto Electronics Manufacturing Co., Ltd.Data No.LA48-06208 No.EKVF-06232 KEMApplication Note No.EKVF-06232Volumetric Karl-Fischer Titration Moisture of candy -Summary- Checked the possibility of measuring moisture of candy in combination of MKA-520 withADP-344, and good repeatability was obtained. -Measuring instrument- Main unit: MKA-520 Volumetric KF moisture titrator Option: ADP-344 Evaporator Electrode: M-714 Twin platinum electrode -Reagent- Titrant: Composite 5 (f=4.8876 mgH20/mL) Dehydrating solvent: Dehydrating solvent FM -Measurement method- Preparation: (1) Fill the titration vessel with Dehydrating solvent. (2) Connect MKA-520 with ADP-344 and set the evaporation temperature at 50 C. (3) Pretitrate for dehydration. (4) Determine the factor of titrant. Measurement: (1) Collect the sample and measure for its moisture. -Equation- Moisture (%): ((DataxF-Driftxt-Blank)/(Wt1-Wt2))x0.1 Data : Volume at EP (mL) Blank : Blank value (mg)F: Factor of titrant (mg/mL) Wt1 : Tare including sample weight (g) Drift: Drift before measurement (ug/min) Wt2: Tare including residual weight (g) t:Measuring time(min) Standard method- Karl Fischer method -Ambient conditions- Temperature:25° ℃ R. Humidity: 61% Weather: Rain 上海旭风科学仪器有限公司 上海市闸北区万荣路388弄17号904室 200072 Http://www.shxf17. com -Measurement parameter- -Printout data- 「Titration] Method 3 Titr Mode 3 Titr Buret No. 1 End Time 30 s Final Vol. 0.01 mL Titr Speed Slow Detector Mode 1 t(stir) 300 s t(wait) 10 s t(max) 0 s Drift Titr : On Start : Manual Max. Volume: 40mL Dose mode : Off Oven : Off [Calculation] Clac. No. 2 Unit :% Weight :\Variable Drift Comp.: Off 「DataList] Data Samp. Time 60s Data List : Off Graphic Form Off Method Calc. No. 32 ***Result * * * Sample No. 21-01 Date 2006/08/05 13:08 Wt1 0.0559 gWt2 0.0 g Net 0.0559 g Blank 0.0 mg Result 3.4100% Bur. No.1 0.390 mL 1.9062 mg Titr. Time 00 :07:10 ***Result***Sample No. 21-02 Date 2006/08/0513:25 Wt1 0.0569 g Wt2 0.0gNet 0.0569g Blank 0.0 mgResult 3.3500% Bur. No.1 0.390 mL 1.9062 mg Titr. Time 00:06: 52 ***Result*** Sample No. 21-03 Date 2006/08/05 13:35 Wt1 0.0661 gWt2 0.0gNet 0.0661 g Blank 0.0 mgResult 3.3274% Bur. No.1 0.450 mL 2.1994 mg Titr. Time 00:07:55 -Measurement results- Run Sample size(g) Titer(mL) Moisture(%) 123 0.0559 0.0569 0.0661 0.390 0.390 0.450 3.4100 3.3500 3.3274 Statistics Mean 3.3625% SD 0.0427% RSD 1.2695% -Comments- Set t(stir) [delay time] to dissolve the sample into the dehydrating solvent. Http://www.shxf17. com Tel: Fax: 周峰 zhou-feng com
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上海旭风科学仪器有限公司为您提供《糖果中水分检测方案 》,该方案主要用于糖果中理化分析检测,参考标准--,《糖果中水分检测方案 》用到的仪器有