Transfer a 1.0 mL aliquot volume of the standard solutions into separate 20 mL headspace vials Accurately weigh 500 mg of Valsartan drug substance into a 20 mL headspace vial. Add 5 mL of NMP ...

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Aijiren headspace vials come in two basic sizes (10 mL glass vials and 20 mL glass vials; Crimp caps are most common however many customers use screw sample and application dependent; clear glass vials and amber vials are available; 11 mm caps, 18 mm caps, and 20 mm caps are engineered to prevent sample contamination while providing consistent, secure seals.

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6ml Crimp top Headspace Vials,also called Karl Fischer Vials, 22*38mm, Crimp neck vial, ND20, Clear, Flat Bottom. Aluminum crimp Cap with an ultraclean septum made of silicone/PTFE The special dimensions of the vials and the modification of the closures are perfectly used for the determination of the water content according to Karl-Fischer

samples in 20 ml headspace vials (22.5 mm x 75.5mm, Grace Alltech, UK).The vials were sealed with a magnetic cap (20mm diameter, 5mm centre, PTFE/Silicone Liner; Grace Alltech) using a Crimper (Part no 60045, Alltech Associates Inc., USA) and allowed to equilibrate at room temperature (22. o. C) for 30 min before commencement of analysis.

except for the HS vial volume. A 10 mL HS vial was used in this case. Extraction blank Two milliliters of LC-MS grade water (extraction solvent) were transferred into a 20 mL HS vial. A blank solution including 500 mg of NaCl was also prepared by adding 2 mL of LC-MS grade water in a 10 mL HS vial, to compare with procedure D. The instrument

Dec 12, 2003 · The apparatus of membrane-assisted solvent extraction consisted of a 20 ml headspace vial which was filled with 15 ml of the aqueous sample. The membrane bag was placed into the vial and the extraction took place in an agitator. After extraction, the analytes were transferred into the inlet of a gas chromatograph by large volume injection.

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2 and air at a flow rate of 30 mL/min and 300 mL/min were used respectively. The sample injection volume was 0.2 mL. The samples were prepared in headspace vials using a water bath at a temperature of 50 °C for 10 min. 2.3. Methods 2.3.1. Preparation of samples, internal standards, calibrators, controls and validation parameters

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Headspace Glass Vials & Headspace Caps Aijiren headspace vials come in two basic sizes (10 mL glass vials and 20 mL glass vials; Crimp caps are most common however many customers use screw sample and application dependent; clear glass vials and amber vials are available; 11 mm caps, 18 mm caps, and 20 mm caps are engineered to prevent sample contamination while providing consistent, secure seals.

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