loading
7CommentsJoined August 21st, 2014

Tell us about yourself!

Complete Your Profile
  • How to Refill a "disposable" Brita Brand Water Pitcher Filter With Activated Carbon.

    Brita filters don't only contain activated charcoal, they also contain ion-exchange resin in important amounts. This is what removes the calcium and magnesium from water (esp. "hard" water), and it is primarily these two elements, along with the chlorine which the activated charcoal takes care of, which make water taste "funny". If you use only activated charcoal you're primarily removing only the chlorine. Ion-exchange resin also removes the heavy metals like copper and lead, which not only taste funny but are actually poisonous in amounts of more than a couple micrograms a day.So you just need bulk ion-exchange resin along with bulk activated charcoal and you're all set, right? Except that ion-exchange resin is SEVERAL TIMES more expensive than activated charcoal.B...see more »Brita filters don't only contain activated charcoal, they also contain ion-exchange resin in important amounts. This is what removes the calcium and magnesium from water (esp. "hard" water), and it is primarily these two elements, along with the chlorine which the activated charcoal takes care of, which make water taste "funny". If you use only activated charcoal you're primarily removing only the chlorine. Ion-exchange resin also removes the heavy metals like copper and lead, which not only taste funny but are actually poisonous in amounts of more than a couple micrograms a day.So you just need bulk ion-exchange resin along with bulk activated charcoal and you're all set, right? Except that ion-exchange resin is SEVERAL TIMES more expensive than activated charcoal.Brita filters also contain an antibacterial : silver (as the cation). It's there to prevent bacteria from positively infesting the filter, which it would otherwise, as it's an EXCELLENT culture medium — party time for bacteria when they find it if the silver weren't there as a disinfectant.None of this is meant to discourage people from doing it — on the contrary, I would love to create a homemade Brita equivalent and applaud the entrepreneurship of others to try. But you need to know what you're doing, and I've noticed far too many people thinking they've licked the problem just because they've bought a big bag of activated charcoal. As you can see, the Brita filter is a "complete" product, with lots of money having been spent on research and development. It will be harder than people think to put together a similar product by buying the bulk "ingredients" separately, because the average person doesn't have the purchase power of a corporation of course — heck, if anything it will likely be MORE expensive.So it becomes a question of what you're willing to sacrifice — for most people, that will mean leaving out the ion exchange resin. That's fine but just be aware what it is and what it does, and the fact that, if you started filtering your water mainly because it tasted funny, and you leave out the resin in your homemade filter because it's too expensive, you're leaving out the main thing that's killing that weird taste.If anyone DOES manage to put together a similar (complete) product at a decent cost savings over original Brita filters, I would LOVE to know how you did it — what you put in, where you bought it, etc.

    View Instructable »
  • GuccizBud. commented on sarCastro's instructable Credit Card SD Holder4 months ago
    Credit Card SD Holder

    There are plastic cards that size, available for free, by the ton, in every developed country. Every coffee place, donut shop, dollar store, etc, etc, has its own gift card nowadays. Some have a preprogrammed amount while others don't. If you're looking at the ones that don't have a preset amount then they will usually be at the counter or cash, usually without any type of packaging, and you can just grab a few. If on the other hand the amount is on them then they'll usually be on a revolving rack and will be individually packaged. Those cards only work when they're activated at the point of sale, so they have no value other than a couple cents worth of plastic when they're on the rack, and here, again, there's nothing to stop you from grabbing a few.

    View Instructable »