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Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months(2-8C)
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.
Need more advice on solubility, usage and handling? Please email to: firstname.lastname@example.org
The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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Template synthesis and characterization of mesoporous γ-Al2O3 hollow nanorods using Stevia rebaudiana leaf aqueous extract.[Reference: WebLink
METHODS AND RESULTS:
Mesoporous g-Al 2 O 3 hollow nanorods have been synthesized using aluminum isopropoxide as Al source and Stevia rebaudiana leaf extract (a complex mixture of eight sweet diterpene glycosides including stevioside, rebaudioside A, rebaudioside B, rebaudioside C, rebaudioside D, Rebaudioside E, dulcoside and steviol bioside) as template to direct the formation of mesoporous alumina on the aqueous system.
Several characterization techniques were used, including XRD, TGA, N 2 physical adsorption, FE-SEM, TEM, and FT-IR. By drying the mixture at 80 1C and then calcining it at 650 1C, a material with high surface area (357 m 2 /g) and uniform pore sizes was obtained. The diameter and the length of the synthesized hollow nanorods ranged from 13 to 25 nm and from 40 to 50 nm respectively.