XLE-440 membrane

[wiam]

William, so you were going straight to 11% in a single pass and getting ~300gph through it? So is that about 40gph of concentrate and 260gph perm?

Close to that. http://www.americanro.com/1772776.html Based on the price and the difference in flow rates in this chart I got xle's. Based on their performance in my machine I will probably buy them again.

[PATheron]

Josh- I run nf 90's, nf-270's and xle-440's. I have a pair or each just the way it turned out with what I decided to go with each machines and I think I like the xle's the best. I shoot for a concentration of 15% as a norm and the 90's are the slowest but no worry of passing sugar. The 270's are the fastest and tested as not passing sugar but if they are washed incorrectly I understand its easy to make them pass and Im always paranoid about it but the xle's are not known for passing and are inexpensive and flow in between the two Id say. So long storry short Id probly buy them over the others from what Ive experianced. Theron

[Amber Gold]

Thanks Theron, just what I was looking for, someone who's ran all three back to back.

William, that's a good link, but what's the difference between low energy membranes (the XLE-4040) and the nanofiltration membranes (NF-Series)? Also, when comparing flow rates, the XLE's are running 2600 gpd @ 100 psi and the '90's are 1500 gpd @ 70psi. How much is the additional pressure increasing the XLE's flow rates? Also, even with the higher pressures, the XLE still has a higher rejection rate than the '90's.

[markcasper]

Why does it seem that the Mark 1's came out and was suppossed to be the cats meow, have been hearing many people not wanting to go with them again. Am I missing something or wasn't the mark1 especially made for sap? And now it seems the xle's are the item of choice for a replacement?