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May 30, 2021 · The final extract solution was dried in a gentle nitrogen stream and reconstituted with 1 mL methanol, and then the solution was filtered through a 0.22 μm PTFE syringe filter. Three replicates were prepared from each sample and several blanks of the same procedural were analyzed (As shown in Fig. S1). 2.3. Migration tests
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Mar 19, 2014 · Video Tutorial Topics and Procedures: HLFW Cleaning, Hand Washing, Garbing, Sterile Glove, Attaching Needle to Syringe, Accessing a Vial, Equal Pressure (Milking), Equal Pressure (Reverse Milking), Removal of Air Bubbles, Ampule Breaking, Using a Filter Needle, Using a Filter Straw, Reconstituting a Vial, Uncapping and Recapping a Needle
Mar 10, 2013 · The samples were filtered through a 0.45 μm PTFE syringe filter (Whatman, Maidstone, England) and diluted accordingly prior to injecting into the HPLC system. Quantification of mitragynine (MG) was carried out based on the calibration curve of MG standard.
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