- This got interesting. I went to the store, bought some blue food dye, and tried this test. Sure enough, the Seychelle passed the blue water...but then so didMessage 1 of 10 , Sep 12, 2000View SourceThis got interesting. I went to the store, bought some blue food dye,
and tried this test. Sure enough, the Seychelle passed the blue
water...but then so did my SafeWaterAnywhere in line filter as did my
Sweetwater Guardian and my Pur Voyageur. The Pur doesn't have the
carbon final filter on it as they aren't shipping the new ones yet
and I round filed my old one. Could the dye provided you be something
other than food coloring? Thinking about it, I would be surprised if
any of them filtered out dye. That would require filtering down to
molecule level, I think. Could be wrong. The reason given for the
removable filter element is the replacement filter is cheaper than
the entire unit.
The instructions I used were for the "First Need" model from General
Ecology. Here they are exactly:
Canister Integrity Test Procedure: (Blue food dye included with unit)
A simple test to assure that the canister has not been damaged
internally, either during use, transport or backwash is to:
1. Add a couple drops (no more) of ordinary red, green or blue food
coloring to a glass of water.
2. Pump this solution through the canister.
3. The filtered water should be colorless.
If the filtered water is still colored, even faintly, the internal
canister matrix has most likely been damaged and the microfilter
should not be relied upon uner this condition and must be relaced.
They(General Ecology) seem to indicate that going to the store and
buying these color of food dyes should have the same results as the
food coloring supplied which is labeled food grade food coloring.
Did you put more than 2 drops in for each 8oz of water? I have used
this test on my First Need and on my Sweetwater Guardian and they
take all the color out. Maybe there are different food colorings
that have different particle sizes?? I'll check with the store
bought coloring in my cabinet and see if there is a difference and
let you know. Mark
I also noticed after both tests that
there was a small amount of grey or black sediment in the water
did not exist before. This indicates that water may have been
leaking around the filter or the filter is for some reason
I had the same O ring experience you did. Fortunately, I had an old
Seychelle and robbed the O ring out of it. I'm not overly concerned
about the black sediment to start with. That is quite common with new
filter of all types. My Pur never did stop doing that, but then that
is another story...lol.
Let me know if I've done something wrong in the dye test. The O ring
worried me too.
The O-ring is a special concern with this design. Usually they won't
get damaged like that if the design is sound and the user doesn't do
anything dumb. Some instructions from the manufacturer might help.
I don't have the O-ring worry with my other filters as there is no
assembly required that could provide a "blow by" path for the water.
- In a message dated 9/11/00 9:48:08 PM, email@example.com writes:Message 2 of 10 , Sep 12, 2000View SourceIn a message dated 9/11/00 9:48:08 PM, the-stanleys@... writes:
<< I was wondering if in the Seychelle unit - the o-ring sealed directly
against the filter "material" or if there was some sort of plastic (or other
rigid material) used as a core to the filter element that the o-ring sealed
against? (also the opposing end of the filter - where housing pressure is
applied must be rigid) >>
I received a filter today. The o ring does not contact the filter
element. It is pressed between two plastic parts of the case that contains
the filter element. The two parts are threaded together.
Instructions that came with the unit explain that a full water bladder's
supply of water should pass through the filter before it should be used for
drinking water. This should flush out any particles or discoloration. I
have not tried this.
It may take me a little time before I am in a possition to use the filter
on the trail since I am recovering from knee injuries caused by my last
backpack in the Whites. My therapist says maybe if I stay on flat trails I
can go on a hike soon, but that's no fun. (Yes it is! It sure beats no
hiking at all.)
- ... From: Critical Payne To: firstname.lastname@example.org Sent: Wednesday, September 13, 2000 7:34 AM Subject: Re: [backpackgeartest] Seychelle Test Results IMessage 3 of 10 , Sep 14, 2000View Source
----- Original Message -----
From: Critical Payne
Sent: Wednesday, September 13, 2000 7:34 AM
Subject: Re: [backpackgeartest] Seychelle Test Results
I just got my filter, and have a few first impressions. I'll start with
1) Documentation, or the lack thereof.
I assume...ah, hope...that the production units will have better documentation.
2) Relating back to #1, for a while I had no idea what the rubber piece
was for. I read the "directions" several times, and made myself feel like
a complete idiot because I couldn't figure out where the rubber piece was
supposed to go. It made no sense to me that it would go in the filter,
but I figured they wouldn't include the thing if it didn't serve a
purpose. It wasn't until I looked through their brochure and saw their
Tap2Pure system that I figured out that it's just a faucet hookup. One
that could be improved by making it a tighter fit to the filter, I might
After getting a face full of water a few times, I figured out that pressing up on the backflush tool and slowly increasing water pressure makes for a lot drier experience
3) When I screwed in the filter element, it appeared to not go in
straight, and was perched at an angle (despite being fully screwed in).
This made it somewhat difficult and consternating to screw the rest of the
casing on, although I did manage it with some care.
4) I am yet to hook the filter up to my hydration pack, for I am wary of a
couple of things. Will it leak? Will it force me to change how I carry
and use my hydration pack (I keep it in a special pouch at the top of my
Gregory Shasta, and run the tube down under my arm and up to a hook on my
shoulder strap)? Perhaps anyone who has already hooked theirs up can
assuage or confirm my fears.
I use mine as a gravity feed filter system. I don't put it in my hydration system.
5) After giving it a test run on the faucet, I blew the remaining water in
the system out with my mouth, and got a TERRIBLE taste in my mouth. The
taste wasn't as strong on the out side (either that or I was used to it),
but I am still concerned about whether the filter could affect the taste
of the water when used in the hydration pack as intended.
And now for the positives . . .
1) Water seems to flow through the filter very easily, which is always a
2) The filter withstood very high water flow from the faucet without
leaking or otherwise failing.
3) The filter is nice and small for what it does, and also relatively
4) No problems with the O-ring, even at high rates of flow from the
5) The element appeared to flush very quickly.
I will give it a more rigorous test this weekend on a small trip, but I
thought I'd send a few initial comments. SO far my main observation is
INSTRUCTIONS, INSTRUCTIONS, INSTRUCTIONS!!!! They don't cost that much,
and it would have helped me out a lot.
Remember, it's a preproduction unit.
[Non-text portions of this message have been removed]