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Applications Info

Applications Info

Determination of Sitagliptin metformin by Ultisil® ODS-3

Column Ultisil® ODS-3(4.6×150mm,3.5μm) Mobile Phase Mobile phase A: Take 3.9g of sodium dihydrogen phosphate dihydrate, add it to 1000mL of water, mix well, and adjust the pH to 2.5 with phosphoric acid; take 950mL of the above solution, mix it with 50mL of acetonitrile and shake well, filter it with Read more…

By News Editor, 22 hoursFebruary 1, 2023 ago
Applications Info

XTIMATE® SEC-120 Polyetteritetol 400, Polyetteritens 3350 separation experiment report

Column Ultisil® SEC-120(7.8×300 mm,5 μm) Mobile Phase Pure Water Detection RID Temperature 35℃ Flow Rate 0.8 mL/min Injection Volume 20 μL If you have any problem or require further information, please contact info@welchmat.com

By News Editor, 2 weeksJanuary 18, 2023 ago
Applications Info

Xtimate C18 isolates 3 types of fat-soluble vitamins

Column Ultisil® Diol (4.6×250 mm,5 μm) Mobile Phase n-hexane:isopropanol:10% glacial acetic acid=240:300:30 (add triethylamine to every 100ml mobile phase 0.05 mL), mixed with glacial acetic acid to adjust the pH to 5. Detection ELSD drift tube temperature: 90°C air flow: 3.5 bar Temperature 40℃ Flow Rate 1.0 ml/min InjectionVolume 20 Read more…

By News Editor, 3 weeksJanuary 12, 2023 ago
Applications Info

Xtimate C18 isolates 3 types of fat-soluble vitamins

Column Ultisil® C18(4.6×250mm,5μm) Mobile Phase Methanol/water=98/2 Detection 280nm Temperature 25℃ Flow Rate 1.0 ml/min Injection Volume 20 μL Note It is recommended that the sample tray be controlled at 4°C If you have any problem or require further information, please contact info@welchmat.com

By News Editor, 3 weeksJanuary 11, 2023 ago
Applications Info

Ultisil® Cellu-J Test Report of Impurities in YN1

Column Ultisil® Cellu-J (4.6×250 mm,5 μm) Mobile Phase N-heptane: ethanol: diethylamine=98:2:0.1 Detection 240nm Temperature 25℃ Flow Rate 1.0 ml/min Injection Volume 10 μL

By News Editor, 3 weeksJanuary 10, 2023 ago
Applications Info

Determination of related substances of morphine with Ultisil XB- C18

Column Ultisil® XB-C18(4.6×250mm,5μm) Mobile Phase Mobile phase A: 1.01g/L sodium heptanesulfonate solution (adjust pH to 2.6 with phosphoric acid) Detection 230nm Temperature 35℃ Flow Rate 1.0 ml/min InjectionVolume 10 μL If you have any problem or require further information, please contact info@welchmat.com

By News Editor, 3 weeksJanuary 10, 2023 ago
Applications Info

Determination of Content of Ultisil® Alk C18(4.6×250mm,5μm)

Column Ultisil ® Alk C18(4.6×250mm,5μm) Mobile Phase Water/Acetonitrile/ Acetic acid =81/19/1 Detection 254nm Temperature 30℃ Flow Rate 1 ml/min Injection Volume 10 μL If you have any problem or require further information, please contact info@welchmat.com

By News Editor, 1 monthDecember 21, 2022 ago
Applications Info

Determination of related substances of Pregabalin by Ultisil AQ-C18

Column Ultisil® AQ-C18(4.6×250mm,5μm) Detection 210nm Temperature 35℃ Flow Rate 1.0 ml/min Injection Volume 20 μL Mobile Phase Time (min) 40mm diammonium hydrogen phosphate/methanol=80/20 acetonitrile/methanol=90/10 0 98 2 5 98 2 30 50 50 31 50 2 View PDF If you have any problem or require further information, please contact info@welchmat.com.

By News Editor, 1 monthDecember 20, 2022 ago
Applications Info

Determination of Lamivudine Related Substances by Ultisil LP-C18

Column Ultisil® LP-C18(4.6×300mm,5μm) Mobile Phase 0.025mol/L ammonium acetate solution (weigh 1.925g of ammonium acetate, add 900mL of water to dissolve, adjust pH to 3.95 with glacial acetic acid, dilute to 1000mL with water)-methanol (95:5) Detection 277nm Temperature 35℃ Flow Rate 1.0 ml/min Injection Volume 10 μL If you have any Read more…

By News Editor, 2 monthsNovember 29, 2022 ago
Applications Info

Separation of impurities in loxoprofen sodium B E F by Ultisil Cellu-D

Column Ultisil® Cellu-D(4.6×250mm,5μm) Mobile Phase N-hexane/isopropanol=70/30 Detection 220nm Temperature 25℃ Flow Rate 1.0 ml/min Injection Volume 10 μL If you have any problem or require further information, please contact info@welchmat.com.

By News Editor, 2 monthsNovember 29, 2022 ago

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