I used to do it when I was healthy, it is easy money.
The equipment used is all sterile, they always opened a sealed package in front of me every time. The clinics are staffed with licensed phlebotomists, and here they are required to have a registered nurse on duty at all times. Your local laws may be different, but it I doubt there is much variance. The staff will explain the process so you know what you are getting into. Basically what happens is, the machine draws out some of your blood, extracts the plasma from it, then sends the rest of your blood back into you. The blood isn't exposed to the inner workings of the machine, it is all kept in sterile containers. Your blood and the plasma extracted from it are not exposed to the machine or anyone else'* blood.
Some tips: Always eat something before you make your donation. If you don't, you could feel nauseous or pass out. Make sure you are well hydrated, it makes the process smoother and quicker.
Take something to read, or an MP3 player. it can be pretty boring. The place I went to had televisions and they showed a limited number of movies. I bet I saw Rush Hour 20 times. I hate that movie. So take something else to pass the time.
1990 LE -wrong bumper