Quote Originally Posted by hellcamino View Post
If that is the case why is it that the two blocks were tested at differing flow rates? Aside from that it would be more useful information having measured flow rates using typical pumps in a comparison with the blocks in question.
let me clarify for you. The pump is set to an arbitrary flow rate with very precise control valves. This flow rate is not adjusted for the entire duration of the comparative tests. The difference in flow rate measured between the two blocks reflects the pressure drop induced by each block. Simply put, what this test tells us is that one block is severely restrictive; some of the forum members have already come to that conclusion, and this test is merely validating it.

The temperature data is significant, in so far as our environment (30C constant water-temp) is far more precise than what could be accomplished outside of a lab. This eliminates a huge variable that plagues numerous at-home experiments.