flagscott wrote:hikeaz wrote:After reading what you wrote about the size of dye, I went 'fishing'.......
https://youtu.be/fZLWlfiwBbg - sometimes a picture is worth a thousand conjectures.
First comment in that video:
Folks.....I spoke to the DESIGN team at Sawyer and this is what they say: "The sawyer filters are barrier filters. We literally filter out the pathogens (viruses, bacteria, cysts, etc.). We do NOT remove disolved (sic) solids from the water. The blue dye you are using is a disolved (sic) solid. It will pass through the pores of the membrane. As it passes through the fibers it will dye the fibers and in so doing remove some of the dye from the water. This will only occur in the first few ounces that pass through the filter. Then it will stop removing the dye. In fact if you then run clear water through the filter it will give up some of the dye back into the clear water turning it light blue. The blue dye removal is NOT an indication of if the filter is working. Our technolgy (sic) does not "wear out" like other filters where you need to test to see if it's working. With ours, it's simple - if water is passing through, it's good." I even gave them THIS VIDEO LINK and they REVIEWED it and this is what they say: "If you look closely at video it is not clear, it has a blue tint. If he kept squeezing more water through it would be the same color as the water going in. Once the void volume of the filter is dispelled there is nothing to remove the dye, other than the small amount that attach to the fibers (like dying your cloths.) And that will diminish very quickly."
Conjecture?
Maybe the FIRST, but editing can be your best friend or your worst enemy..
Apparently this guy, Tien Tran (the author of your quote-within-a-quote) sells a competitive product on eBay.
Also, editing omitted a post a coupla spots down...
"James Ritchie- 11 months ago posted:
+Tien Tran, I have no idea what the design team says, but I know for a fact that the Sawyer keeps right on removing dye for me. It will clog before it stops removing anything I've tried it on. Then you back flush it, and start over. You can talk about it to whatever length you like, but I actually DO it. The design team might want to stop talking and stat doing, as well. They may well have designed this thing better than they thought."
More posts that were omitted ...
"Bill Jamison- 9 months ago posted:
Hiram I do not comment often. I watch a lot of Youtube via my Amazon fire stick on my big TV, I have yet to figure out how to comment on it.
First let me say I love your channel. Yes I enjoy watching Hiram boil water!
Now for the reason I am here. I recently bought a pair of Sawyer "Mini" water filters.
They appear a touch smaller than yours, no threads on top, just a barb for putting a hose or straw on.
Now I did not do my test on blue water. I did mine on Iced tea.
Color came out perfectly clear, you could taste the sugar, but no tea flavor at all.
So I have no doubt that if I wanted to duplicate your test that I would get exactly the same results.
And maybe the most apt/telling..
"RockyMountainMare-3 years ago posts:
This is a great video. I own two Sawyer 0.1 micron filters, one purchased this year and one last year. I kept my old filter under my sleeping pad in zipper bag at night. After a 22 degree night I tested with blue dye. Blue dye ran thru. I don't know if that's a problem, don't know micron size of blue dye. But I bought the new Sawyer filter and sure enough, it runs clear. So I'll pack the new filter and try harder to keep it warm at night. In the bottom of sleeping bag no doubt. '
Proving (or at least strongly suggesting) that what you read on the internet is almost
always conjecture - pick a position and you can find gobs of other supporters of it.
More fact/conjecture >> See: Integrity Test Procedure https://generalecology.com/images/files ... io0512.pdf and https://www.youtube.com/watch?v=-WIKzivCEg0 and http://www.crystalclearwater.com.au/cam ... gritytest/.
