Abstract: A hydraulic system for a flow cytometry having a reservoir for a sheath solution, at least one syringe connected to the reservoir, the at least one syringe being driven by a motor, a single HGB module connected on an inlet side to a sample inlet which is connected to the flow cell by a single flow path passing through the HGB module, a single flow cell connected to the HGB module and at least one syringe on an inlet side of the flow cell, and to a waste container on an outlet side of said flow cell.

Abstract: A pitch changing device for a pedal steel guitar. The pitch changing device (10) includes at least one tension adjusting lever (24) pivotally mounted on the guitar body (14) for anchoring at least one guitar string (17) and selectively increasing or decreasing the tension on the string. At least one bracket assembly is provided including a first bracket (34) pivotally secured to the guitar body so as to selectively pivot at a first pivot point (40), and a second bracket (36) for engaging and pivoting the pitch adjustment lever (24), the second bracket (36) being pivotally secured to the first bracket (34) at a second pivot point (45) displaced from the first pivot point (40).