Hello, I am a veterinarian at a zoo and we would like to get into blood banking of particular species and are looking to source a refurbished reparable centrifuge. Nothing fancy, we will not use it anywhere near as much as a human blood bank. If anyone has any suggestions as to where to look for something like this please let me know. I have tried Google and eBay and all I can fine are either new units (expensive for our needs) and units or questionable quality. thanks for any assistance. Keith