select the correct statements from the following list regarding the use of the Buchner vacuum filtration system Vacuum filter parts Question 2 options: the filter flask must be tightly clamped to the support stand so it doesn't tip over accidentally The funnel doesn't fit very well into the filter vac on the filter flask so you need to press and hold it down to seal it or you will not get a useful vacuum The sequence to get the vacuum flowing is: 1. open the compressed air valve on the bench top. 2. Move and attach the filter equipment to the vacuum hose at the station on the bench where the PIAB unit is mounted to the column. 3. turn on the blue valve on the PIAB unit to start the vacuum 4. make sure the valves on the tubes are open and check to see if there is a vacuum at the funnel. There is already a vacuum flask at the PIAB vacuum station. You do not need to use a second one