my uncle asked him to purchase a 500 ml, and 1000 ml, and 250 ml round bottom flask. he said to get him a "condensor" distillation adapter, vacuum adapter, and thermometer adapter. then he said 19/22 or 24/40 and told me with a little research its completly self explanatory. however, its not. i was looking at "condensors and they were all different measurements. can somebody tell me the proper measurements for the pieces of equipment that i have not specified the measurement? (condensor, distillation adapter, vacuum adapter, thermometer adapter). its for a "distillation apparatus" apparently his old lab was destroyed during a moving process. if anybody can help me not look like a total dumbass, id really really appreciate it