1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
  2. Hey Guest, We're having our annual Winter Moot and we'd love you to come. PLEASE LOOK HERE to secure your place and get more information.
    For forum threads CLICK HERE
    Dismiss Notice

Anyone used a LARQ water bottle?

Discussion in 'Kit Chatter' started by hughtrimble, Dec 30, 2019.

  1. hughtrimble

    hughtrimble Cutter

    Joined:
    Jan 23, 2012
    Messages:
    246
    Likes Received:
    7
    Location:
    UK/France
    Afternoon BCUKers,

    Hope you're all having a good Christmas break.

    Has anyone had any experience with the LARQ bottle? It has a UV-C light in the lid that supposedly kills off almost all bacterial and viral nasties: https://www.trailandkale.com/gear/larq-bottle-review/

    It's not my thing but the missus is keen on one.

    Could this be a solution for not needing to filter water when out and about? I'd think you'd still want to remove the larger particles before drinking, but that could potentially be through a coffee filter or the like given the filter wouldn't need to be doing any health critical trapping.

    Your expertise in this would be great, either through hands on experience or more theoretical.

    Cheers,
    Hugh
     
  2. Jared

    Jared Bushcrafter (boy, I've got a lot to say!)

    Joined:
    Sep 8, 2005
    Messages:
    2,486
    Likes Received:
    75
    Location:
    Wales
    Nice65 likes this.
  3. Nice65

    Nice65 Full Member

    Joined:
    Apr 16, 2009
    Messages:
    4,264
    Likes Received:
    997
    Location:
    W.Sussex
    I completely snub all Kickstarter stuff after getting messed around and ripped off on a titanium Hipp Flask. I did get the flask, but the finishing and quality was atrocious, the seal on the lid was a circle of white plastic so it leaked (I complained so they sent 5 more so I could pack them in), the soldering was bad, the finish was awful. The designers seem only too happy to give the manufacturing to incompetent Chinese manufacturers who don’t know what they’re dealing with. As it’s not their money, it’s yours, they’ve nothing to lose.

    I wouldn’t trust a UV water bottle to clean water. If it was that easy it would already be in use. I don’t know enough about UV for killing bugs, but I’d imagine the wavelength needs to be quite specific.
     
  4. lou1661

    lou1661 Full Member

    Joined:
    Jul 18, 2004
    Messages:
    1,952
    Likes Received:
    47
    Location:
    Hampshire
    Just a brief look on there website, looks like it has only been tested on E.coli no mention of any other bacteria, cysts or Protozoa. I personally like proven safety when it comes to my health. Seems like a product based on marketing not science.
     
  5. hughtrimble

    hughtrimble Cutter

    Joined:
    Jan 23, 2012
    Messages:
    246
    Likes Received:
    7
    Location:
    UK/France
    @Jared @Nice65 @lou1661
    Thank you all for your input on this - I too am wary given the marketing of the product and the target audience (hipster tax sounds appropriate given the price segment!).

    Very good point on the issue of it not being in wider use despite the apparent panacea claims they make.

    I hadn't thought to look at the Kickstarter comments, and instead seem to have only come across what are likely to be 'reviews' where people talk about items they've only just received in the post and haven't actually used/tested them in any meaningful way.

    Cheers all - I'll be staying clear!
     
    Nice65 likes this.
  6. Jared

    Jared Bushcrafter (boy, I've got a lot to say!)

    Joined:
    Sep 8, 2005
    Messages:
    2,486
    Likes Received:
    75
    Location:
    Wales
    Yeah, UVC needed is somewhere around 260nm to 280nm for peak efficiency (DNA destruction).
    UVC leds are still relatively new (< 10 years old), and coming from company that had to kickstart it, not sure I'd put much faith in that bottle either.

    I'd say wait until someone with bit more credibility gets in on it, Katadyn comes to mind, they surely have to be looking to update their steripens to using leds.
     
    Nice65 likes this.
  7. Nice65

    Nice65 Full Member

    Joined:
    Apr 16, 2009
    Messages:
    4,264
    Likes Received:
    997
    Location:
    W.Sussex
    If the system was viable and could guarantee bug free water, they’d already be on the market by an established water purifying specialist like Katadyn. I don’t think UV is reliable on its own. I see it incorporated in hand driers occasionally and wonder how the blue light is killing anything. Seems like a gimmick, blue is associated with cleanliness.
     
  8. Jared

    Jared Bushcrafter (boy, I've got a lot to say!)

    Joined:
    Sep 8, 2005
    Messages:
    2,486
    Likes Received:
    75
    Location:
    Wales
  9. Billy-o

    Billy-o Native

    Joined:
    Apr 19, 2018
    Messages:
    1,060
    Likes Received:
    405
    Location:
    Canada
    You’d be better off putting a little bit of bleach in your waterbottle
     
  10. EdS

    EdS Bushcrafter (boy, I've got a lot to say!)

    Joined:
    Jan 7, 2004
    Messages:
    3,759
    Likes Received:
    27
    Location:
    About as far up the Dales as you can get before th
    UV disinfection is common in the treatment of private (off mains) water supplies.

    However, the presence of any solids / colloidal matter or discolouration reduces the effectiveness.

    Fe and Mn mess it up as does tannin. Peaty water is a right bugger to treat
     
    Nomad64 and Nice65 like this.
  11. Nice65

    Nice65 Full Member

    Joined:
    Apr 16, 2009
    Messages:
    4,264
    Likes Received:
    997
    Location:
    W.Sussex
    Cheers, makes sense that, and @Jared post, the light needs to be able to fully penetrate the solution or the water needs to be filtered and passed directly through the light. Under certain circumstances the E.coli bacteria the LARQ claims to kill might well be protected from the UV by particulates.

    It’s amazing this LARQ hasn’t been picked up as charlatanism or fraud considering the claims.
     
  12. Nomad64

    Nomad64 Full Member

    Joined:
    Nov 21, 2015
    Messages:
    998
    Likes Received:
    504
    Location:
    Just out of range
    Steady on, there is nothing wrong with the concept, just it appears the issues are with supply and execution.

    I’ve used the Steripen (which treats water with UV), for many years while travelling without any problems. Just pre-filter (if necessary) to get rid of any visible crud and then let the UV light do its thing.

    https://www.ultralightoutdoorgear.co.uk/steripen-m48

    Where I now live, the water comes from a spring and we inherited a system where the water is passed through a filter (only an ultrafine one which TBH is probably unnecessary as the water is very clear and the filter doesn’t catch much) - you can have a sequence of filters starting with ones that take out large lumps.

    Not sure whether this is a reflection of the poor quality of the mains water there or they are just paranoid but these filter systems seems very popular in the US even for those with nains supply.



    Then it goes through a a stainless steel tube with a UV tube (changed annually and fitted with an audible alarm in case of failure) which zaps the DNA of anything alive in the water.

    https://www.uvwatertreatment.co.uk/products/

    Passes an annual water quality test by the council with no issues - could be that there us nothing wrong with the water in the first place but nice to be safe.

    Reading the reviews/feedback of LARQ on the KS page, it looks like the issues are either non-delivery or premature failure of the electronics.

    I’m sure LARQ doesn't claim that you can drink from a muddy puddle or an open sewer without filtration or that it will deal with non-organic contamination but if you are worried about the quality of the water coming out of a tap then it could (if made and used properly), encourage people to move away from bottled water in single-use plastic bottles.
     

Share This Page