So, this seemed most appropriate for this forum, as it's essentially a question about pumps, pressures, and fluid mechanics. The set up I have that this question pertains to; There are two pumps that have lines running to a T-joint with a small chamber to allow for mixing before exiting into an analyzer. To bring a bit of chemistry into this, what I'm trying to do is run a titration using this setup; I have one solution in Pump A's reservoir, and a different solution in Pump B's reservoir. Pump A's concentration needs to be held constant, while Pump B's concentration needs to be varied. I'm trying to figure out if I need to run both pumps at the same rate, and change the concentration of Pump B's solution, or if I can simply vary the rate of Pump B to get the same effect. The question in the end is; if Pump B runs slower than Pump A, will mixing still occur effectively, or will Pump B be unable to effectively deliver its solution to the mixing reservoir with Pump A's solution carrying it into the analyzer before it has a chance to mix in the chamber appreciably, and does the rate of Pump B in comparison to Pump A have an effect on that mixing?