The rema ining contents of the samples were transferred from the crucible to dried and cleaned volumetric flasks
It was quantified by transferring 10g of sample soil to a 25ml volumetric flask
. After weighing, boiling water was added until 2/3 full and the flask heated (without stopper) in a hot water bath to remove any air entrapped in the soil.
An accurately weighed profusion of powder equivalent to 10.0 mg of praziquantel was transferred to a 10.0 mL volumetric flask
. Methanol was added to this volumetric flask
and it was sonicated for 15 min.
The 1 mg m[L.sup.-1] of stock solutions were prepared by dissolving 10 mg of excipients in a 0.010 mol [L.sup.-1] NaOH in a 10 mL volumetric flask
. The spectrophotometric measurements were carried out in solutions of 8 [micro]g m[L.sup.-1] excipients and a mixture (8 [micro]g m[L.sup.-1] PAR + 8 [micro]g m[L.sup.-1] excipients) prepared by diluting stock solutions.
In order to prepare 100 mL of 1000 ppm IS solution, 100 mg of IS was dissolved in 50 mL of Methanol and in the end made up the final volume 100 mL in the volumetric flask
A cream dosage form, miconazole nitrate cream equivalent to 20 mg of the drug, was weighed and transferred into a 50 mL volumetric flask
. A soft gelatin capsule, the miconazole nitrate vaginal soft gelatin capsule, was weighed, and the content was transferred into a flask.
10 mg of Prop were transferred to a 25 mL volumetric flask
. 2 mL of methanol were added and the mixture was placed in ultrasonic bath for 10 min to allow complete solubilization of the active, and the volume was completed with 0.01 mol [L.sup.-1] HCl.
Beakers, graduated cylinders, and volumetric flasks
were used for the accurate preparation of the titrant, indicator, and buffers.
To obtain the P-gp inhibitor verapamil hydrochloride stock solution, verapamil hydrochloride was weighed precisely at 0.1233 g, and placed in a 25-mL volumetric flask
. Next, the pH 6.8 K-R solution was added to dissolve and dilute it to the required scale, which was shaken well before use.
After wards, the sample was cooled, filtered through Whatman GF/C filter papers, transferred to a 50 mL volumetric flask
, and diluted to the mark with distilled water.
This study used a rapid sampling device, the Micro-Chamber/Thermal Extractor M-CTE250 connected to a cylindrical volumetric flask
, together with gas chromatography--mass spectrometry (GC-MS) to analyze VOC emissions from three-layer plywood under different temperatures, relative humidity levels, and ratios of air exchange rate-to-loading factor.
The solution was transferred into a 50 ml dry volumetric flask
and was then sonicated for 5 min.