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ohthanks

HN member
Joined
Fri, Apr 23, 2010, 4:44 PM UTC
HN karma
63
Public activity
19 items

About ohthanks

www.testtube.org

Recent public activity

  1. comment
    Comment #45518828

    The vast majority of these 400 heat deaths have nothing to do with the power grid. They are people living outdoors, roofers, elderly, etc. When the temps hit 105+ for long periods …

  2. comment
    Comment #40014510

    They don't boost the feed pressure, just isolate the output permeate line from the back pressure of the storage tank. Instead of the membrane output pushing against the increasing …

  3. comment
    Comment #39997291

    I have built and sold RO systems for 20+ years. It's a weird industry and there are some competing desires in place. In general it's kind of a mess and it's difficult for consumers…

  4. comment
    Comment #39376160

    The articles state higher levels in bottled water treated with RO but there are many stages of treatment and delivery involved in industrial scale bottled water production. Unclear…

  5. comment
    Comment #37303293

    ZeroWater uses a mixed bed ion exchange resin (anion and cation) to attract and hold dissolved ionized solids. Mixed bed resin is very effective and will remove nearly 100% of diss…

  6. comment
    Comment #35866573

    There can be downsides to the permeate pumps, but not many. Installed with a standard hydraulic shut off valve (ASO) you won't see any issues but you won't get much in the way of i…

  7. comment
    Comment #34491301

    I sell residential RO systems. Industry wide the tubing is typically LDPE and the housings/fittings are mostly polypropylene. There is no real practical way to build a residential …

  8. comment
    Comment #19454268

    This is not a consumer product at all. I don't know how useful it will be but it's designed to be development tool for early art direction visualization. Even for 2d visualization …

  9. comment
    Comment #18386816

    I think it's actually pretty hard to tell much from the membrane itself, my understanding is that most of the process is based in the membrane preferring the smaller water-only mol…

  10. comment
    Comment #18386781

    You can remineralize with limestone post-filtration. Or eat food.

  11. comment
    Comment #16943815

    I didn't mean that a custom domain is an indicator. Just that they go to the trouble to register throwaways for this use and it isn't limited to just free email services.

  12. comment
    Comment #16942991

    I periodically deal with recurring fraud from what seems to be a pretty organized network. - Orders are placed with stolen credentials with correct billing info that matches AVS. -…

  13. comment
    Comment #13525995

    There are no official treatment recommendations for PFNA, PFOA, PFOS that I know of but they can be treated with activated carbon, RO membranes or some combination. GAC seems to be…

  14. comment
    Comment #11070884

    This is totally correct. It is also not very applicable to drinking water & whole house systems that homeowners are interested in. There are carbon cartridges with ion-exchanges re…

  15. comment
    Comment #11070519

    You will for sure, I actually like it but not everyone does. You can remineralize and change the taste without too much trouble. I would avoid any other claims made for that proces…

  16. comment
    Comment #11070473

    Carbon filtration will not remove dissolved solids (lead, heavy metals) without added ion-exchange resins. RO is generally the most effective broad spectrum treatment method for dr…

  17. comment
    Comment #4806234

    I can't vouch for any the actual content he is posting, but I can very confidently confirm this is his blog.

  18. comment
    Comment #4472902

    http://www.kickstarter.com/projects/zioneyez/eyeztm-by-zione... seems like a pretty clear example of this. Backers are actually starting a separate forum to discuss legal action. D…

  19. comment
    Comment #2753880

    pretty sure that is my friend Ben Barry, http://www.designforfun.com/ been doing some very excellent design work for fb over the past few years.