容量法卡尔费休水分仪MKA-520测定涂料中水分含量En

Kyoto Electronics Manufacturing Co.， Ltd.Data No.LG38-08338 No.EKVJ-08362 KEM Application Note No.EKVJ-08362Volumetric Karl-Fischer Titration Moisture of paint ·Summary- Checked the possibility of measuring moisture of paint with MKA-520， andgoodrepeatability was obtained. -Measuring instrument- Main unit： MKA-520 Volumetric KF moisture titrator Electrode： M-714 Twin platinum electrode -Reagent- Titrant： Composite 5K (f=4.9034mgH20/mL) Dehydrating solvent： Dehydrating solvent CE -Measurement method- Preparation： (1) Fill the titration vessel with Dehydrating solvent CE. (2) Pre-titrate for dehydration. (3) Determine the factor of titrant. Measurement： (1) Place 5g sample in the titration vessel with the syringe before measuring the moisture inthe sample. -Equation- Moisture (%)： ((DataxF-Driftxt-Blank)/(Wt1-Wt2))x0.1Data ： 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：24℃ R. Humidity： 53% Weather： Fine Http：//www. shxf17.com -Measurement parameter- -Printout data- Titration] Method 1 Titr Mode 1 Titr Buret No. 2 End Time 30 s Final Vol. 0.01 mL Titr Speed Slow Detector Mode 1 t(stir) 60 s t(wait) 10s 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 [Data List Data Samp. Time 30 s Data List ： Off Graphic Form Off Method Clac. No. 12 ***Result***Sample No. 01-01 Date 2008/10/04 15：48 Wt1 5.6663gWt2 0g Net 5.6663g Blank 0.0 mg Result 0.1389% Bur. No.1 1.605 mL 7.8700 mg Titr. Time 00 ： 03：12 ***Result***Sample No. 01-02 Date 2008/10/04 16：10 Wt1 5.5710gWt2 0g Net 5.5710 g Blank 0.0 mg Result 0.1404% Bur. No.1 1.595 mL 7.8209 mg Titr. Time 00：03：26 ***Result * ** Sample No. 01-03 Date 2008/10/04 16：15 Wt1 5.3530 gWt2 0g Net 5.3530 g Blank 0.0 mg Result 0.1406% Bur. No.1 1.535mL 7.5267 mg Titr. Time 00：02：44 -Measurement results- Run Sample size(g) Titer (mL) Moisture(%) 123 5.6663 5.5710 5.3530 1.605 1.595 1.535 0.1389 0.1404 0.1406 Statistics Mean 0.1400% SD 0.0009% RSD 0.6638% ·Comments- Use the reagent for ketone because the sample is a paint. Http：//www.shxf17.com 上海旭风科学仪器有限公司 上海市闸北区荣路 el： Fax： 周峰 zhou-fengcom