... and it has the advantages of small cubage , low weight,large capacity,low noise,hig Specification: Max.speed4000rpmCapac ity12×20mlMax.R ... and it has the advantages of small cubage ,low weight,large capacity,low noise,high efficiency and so on. it ... for qualitative analysis of serum,urea and plasma.rotor imbalance protection device speed choice in advance & acceleration accurate gradually door switch ...