Laboratory apparatus, namely, centrifuges for separating a composite biological fluid into one or more components; laboratory apparatus, namely, centrifuges for separating blood into blood components such as plasma, platelets and red blood cells; laboratory centrifuges for separating a biological fluid into one or more components; laboratory centrifuges for separating blood into blood components such as plasma, platelets and red blood cells; replacement parts and fittings for the aforesaid ap...