...needed. Add stir bar and stir slowly at 4 °C for 1 h, then keep at 4 °C for 3 h without stirring to allow...controller Hazardous waste container pH meter Stir plate Magnetic stir bar Sonicator Ear protection Vortex Reagents...other than PES. AAV particles stick to many other surfaces, but do not stick to PES. Using a PES filter ... FBS media causes less filter clogging during harvesting. The addition of sorbitol has been shown to increase...PEI powder into 100 mL of deionized water. While stirring, slowly add hydrochloric acid until the solution...deionized water and adjust to a final volume of 1000 mL. Stir at RT until fully dissolved. Pro-Tip This step is... challenging due to the high viscosity of PEG. Stirring under medium heat will promote faster dissolution...