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Warning for any aluminum can pot users
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David Lewis
(davidlewis) - MLife

Locale: Nova Scotia, Canada
Re: Re: Time Will Tell on 04/20/2008 07:41:03 MDT Print View

Ya... same story. God forbid anything should ever get in the way of making money. Everything comes down to a cost-benefit analysis. Meat regulation and inspection for instance is far more lax in the US than in Europe. When filling orders for shipment to Europe, processing plants have to slow the line down. The best thing you can do as a consumer I guess is just to be informed and vote with your wallet. I'm trying to cast more "votes" at my local Farmer's Market lately.

Rob Blazoff
(Genetic) - F

Locale: Out back, brewing beer in BPA.
BPA on 04/20/2008 23:53:45 MDT Print View

http://www.nalgene-outdoor.com/technical/bpaInfo.html

http://www.nalgene-outdoor.com/

Links to Nalgene Bisphenol-A phase out.

Charles Mason
(guesting) - F
Re: BPA products such as Nalgene, Heini cans: on 04/29/2008 14:22:53 MDT Print View

Imminent Canada & US declarations/actions probably forced greedy Nalgene into action, not their conscience. Will they be sued in future like the tobacco industry?

http://blogs.wsj.com/health/2008/04/18/wal-mart-nalgene-move-away-from-bisphenol-a/?mod=WSJBlog

Chris Chastain
(Thangfish) - F

Locale: S. Central NC, USA
Re: Re: Re: Re: Some Info on 04/29/2008 15:16:17 MDT Print View

> Reference: Rachel Carson's Silent Spring

Thanks for citing that reference!
In my opinion, she has even less credibility than Al Gore.
Her book was probably (indirectly) responsible for more human deaths than Mein Kampf.
If indeed she did have any valid arguments, it was completely accidental, with scientific evidence ranging from weak to nonexistent even to this day.

DDT is the safest (to humans), most effective and cheapest (thus making it a life-saver to Third Worlders) insecticide ever invented. That alone should be enough to discredit any other claims she might make.

BTW:
This is not to say that DDT wasn't being terribly abused, probably because of it being so safe and effective along with its lack of expense...

I think maybe I should go off and hide now.

Dave T
(DaveT) - F
. on 04/29/2008 15:20:33 MDT Print View

.

Edited by DaveT on 11/20/2014 17:36:32 MST.

Charles Mason
(guesting) - F
plastics on 04/30/2008 11:06:39 MDT Print View

The link below was in one of the comments in the URL above and is worth a read, particularly the bullet pointed highlights in the gray box. I have never cooked with plastics, for example heating in the oven and never put them in the microwave despite printed instructions. Speificlly as microwaves are only a generation old and we don't know how they react with plastics fully over a long time of extended exposure. And no I'm not a health freak and regularly abuse my body to excess and have various problems as a result, mainly due to stupid negligence. However instinctively I never liked the idea of heated plastics next to food. Furthermore if one decides to ignore scientific warnings due to whatever current mental state, it is only ethical not to extend that decision to affect others, specially if they are children.
http://www.familiesonlinemagazine.com/plog/index.php?m=200804

Lynn Tramper
(retropump) - F

Locale: The Antipodes of La Coruna
Re: plastics on 04/30/2008 16:16:26 MDT Print View

This is an emotive issue, and one which I swore I would try to keep my mouth shut on...but the BPA hype is really way overboard IMHO. I say this for several reasons:

1)A large study of urinary BPA in US citizens of all ages and gender showed the median intake of BPA was 3 orders of magnitude below the generally accepted "safe" level.

2) All the direct evidence linking BPA to cancers was done in rodents, and by-in-large the rodent strains were chosen/bred for their known sensitivity to estrogenic compounds

3) Even between differnt rodent strains there was a huge variation in sensitivity to BPA.

4) BPA is 1000-5000 times LESS ESTROGENIC than our own endogenous estrogens

5) And this one I consider to be the biggest reason we're scare-mongering up the wrong tree, is that obesity is far-and-away the biggest risk for excess estrogen exposure in humans. When these estrogen sesnitive rodents were exposed to either 50ug of BPA or 1ug of estrogen, the estrogenic response was still much greater in the estrogen treated rats. ESTROGEN IS A TOXIN (so is testosterone since it is the source of all estrogen in humans, but that's almost off-topic). We live in an obesogenic society, and the estrogen exposure to ourselves and our children from excess adipose tissue (body fat), for most people, completely swamps the effects of trace exposure to weakly estrogenic compounds. not to mention many women also choose to overdose on estrogens via oral contraceptives or HRT on top of carrying too much bodyfat

This is not to negate our own choices to be informed and select products that we consider to be safe, and to know the risks associated with different packaging or additives. But I honestly suspect most parents would do far better towards their children's future health to ask for bans on institutions like McDonald's, and teach/enforce good nutrition, exercise and weight control in their kids rather than obsess about trace amounts of weakly estrogenic compounds in their water bottles.

Charles Mason
(guesting) - F
? on 05/03/2008 22:11:15 MDT Print View

No defender addresses the question of cooking with these carcinogenic plastics on a regular basis which is widely taking place.

Lynn Tramper
(retropump) - F

Locale: The Antipodes of La Coruna
Re: ? on 05/04/2008 13:44:49 MDT Print View

Well, that's an unknown for sure. For me, the question might be better phrased as "how much BPA might come from the lining of one Heineken can with repeated cooking"? Canned foods, are, almost by definition, exposed to a very high temperature and pressure at time of manufacture. I know normal cooking doesn't reach those kinds of pressure, and normal boiling doesn't reach those temps, but how bad is it to burn a meal in a heine?????? How many potential micrograms of BPA are in one can?

Charles Mason
(guesting) - F
??? on 05/05/2008 12:06:19 MDT Print View

I think the factory process is for a short time and not comparable to sticking a plastic lunch into the office microwave every day or regular cooking with a Heini or someone consuming their hot nourishment daily in a Nalgene, and so on. In fact the most worrying universal use is probably the baby food containers which have replaced glass and metal as they don't transfer as much heat. So it would be nice to see data on any research into such studies on 'sustained exposure' measurements which I am sure has been secretly done somewhere.

Secondly I would like to see figures on other agents than BPA too. It's not just BPA.

Thirdly, is it possible that some of these historically recent compounds which have not been examined for long could increase the triggering of genetic reactions in a person's body depending on the person's DNA and/or age?

It would be nice to hear from experts like you and also see any links to 'independent' studies on such issues.

Lynn Tramper
(retropump) - F

Locale: The Antipodes of La Coruna
Re: ??? on 05/05/2008 14:28:42 MDT Print View

If you can access this article, it has all the relevant research cited at the end. it was published in February 2008, adn as of publication date, the authors state :

"Another critical research direction is for studies on bisphenol A, widely used to manufacture polycarbonate plastics and for the lining of metal cans (64). Because of the consistent animal data, epidemiologic studies on BPA are needed, especially in high-exposure subpopulations.

Critical research directions for chemicals with widespread low-dose exposure overlap with those described above for chemicals with high exposure. Apart from identifying high BPA exposure subpopulations, we need to conduct studies among members of the general population with low-level environmental BPA exposure. Another critical research need is to design studies that collect data on and allow for analysis of risks from mixtures of chemicals. Individuals are exposed to most if not all of the chemicals and metals described above, and developing methods to understand fertility impacts of mixtures is desperately needed."

So, no, the human data is still lacking. The non-human and in-vitro studies are conflicting and not necessarily relevant to the human situation.

As for age, genetics and gender, I think there is little doubt that some folks will be more sensitive or at risk to some chemicals than other people. At present we don't have the technology to fully identify all the risk genes for all possible chemical exposures. The classic example of this genetic risk to "chemicals" was the smoking study showing that people who had extra copies of a liver gene called CYP2D6, were twice as likely to get lung cancer. This turned out to be because this gene's protein converts non-carcinogneic compounds in cigarettes to carcinogenic ones. The more of this protein you have (ie more gene copies) the more carcinogenic compounds you get exposed to when you smoke.

Of course many doctors/scientists would say this is a good reason to screen smokers for this gene. WHY???? How stupid. Just tell people to stop smoking and the problem goes away without spending billions of dollars doing genetic screens on smokers so that you can tell SOME of them to stop smoking?? That's craziness.

Charles Mason
(guesting) - F
! on 05/05/2008 15:55:06 MDT Print View

cocktails.

Edited by guesting on 06/12/2008 19:00:45 MDT.

David Lewis
(davidlewis) - MLife

Locale: Nova Scotia, Canada
New "Trappers" Mug on 06/04/2008 04:32:49 MDT Print View

Well... I'm very excited to see the new BPL Firelite Trappers mug. At 37 grams, it's a real pot/cup that actually comes close to the insanely light weight of a Heineken can.

Heineken - 26 oz volume, 29 gram weight (1 oz)
Trappers Mug - 17 oz volume, 37 gram weight (1.3 oz)

I never boil much more than a cup or cup and a half of water for my single serving meals... so 17 oz should be plenty. And now... no BPA lining! Of course... the debate above beats that dead horse a few times... LOL... but given a choice between a BPA lining or not... all else being ALMOST equal... who wouldn't choose to go BPA-free?

Pros (compared to Heineken system):
- No BPA lining
- Don't have to worry about accidently crushing it
- Works with BPL wing stove (which is LIGHTER than my stainless mesh stand + energy can bottom)
- Rolled lip means I can still use my BPL Ti rod handle
- Overall system weight is virtually identical!

Cons (compared to Heineken system):
- No lid, and my 3 gram aluminum cat food can bottom trick won't work :-(
- Less water volume

I really wish it came with a lid. You could always leave it at home if you are anti-lid. It's useful not just for boiling, but for stowing. Aluminum foil is fine for boiling, but useless for keeping things inside the pot (your stand, water treatment chemicals, windscreen, lighter etc.). Maybe I can find another solution.

BTW... my comparisons here are based on this stove... which I designed and have been using and loving for a couple years now...

http://www.davidlewis.ca/stove/

For the gram counters... here is the breakdown of my beer can system vs. this new option:

Trappers Mug System: 55 grams
-----------------------------
Mug: 37 g
Wing stand: 11 g
Ti Windscreen: 3 g
Handle: 3 g
Lid: 1 g? (aluminum foil... 3 grams for something more solid?)

Heineken Can System: 55 grams
-----------------------------
Can: 29 g
Stainless Stand: 14 g (7 g for galvanized)
Esbit holder: 3 g
Ti Windscreen: 3 g
Handle: 3 g
Lid: 3 g

Edited by davidlewis on 06/04/2008 04:49:46 MDT.

George Matthews
(gmatthews) - MLife
Re: New "Trappers" Mug on 06/04/2008 10:18:37 MDT Print View

Thanks for the excellent comparison between Heineken vs Trappers. Makes a good argument to get the Trappers if you have the BPL Wing. Looks like a good way to get a sub2 oz set up.

David Lewis
(davidlewis) - MLife

Locale: Nova Scotia, Canada
Re: Re: New "Trappers" Mug on 06/04/2008 10:22:08 MDT Print View

Ya. I'm pretty excited about it! I love the beer can... but I've always thought it would be nice to have a "real" pot... and I've always wanted to use my BLP Ti wing stove! The only thing, as I say, I'm not keen on is the lack of a lid. But I'll figured something out. Maybe tin foil for boiling and a super ultra light stuff sack for keeping stuff stowed inside the cup.

steve parsons
(stevoparsons) - F
noobs of backpackinglight.com on 09/30/2010 16:50:51 MDT Print View

noobs

Travis Leanna
(T.L.) - MLife

Locale: Wisconsin
Re: noobs of backpackinglight.com on 09/30/2010 17:01:05 MDT Print View

-Deleted-

...shouldn't feed the trolls...

Edited by T.L. on 09/30/2010 17:27:55 MDT.

Roy Staggs
(onepaddlejunkie) - F

Locale: SEC
From the FDA on 10/01/2010 12:28:45 MDT Print View

http://www.acsh.org/healthissues/newsID.1861/healthissue_detail.asp

James D Buch
(rocketman) - F

Locale: Midwest
Re: plastics on 10/01/2010 13:57:27 MDT Print View

Charles Mason wrote:

"Speificlly as microwaves are only a generation old "

I went to the Belville Illinois fair in the summer of 1949 when I was 9 years old. My dad was working as an electrician setting up and maintaining the electrical distribution to the exhibits and vendors. We got in free as a result, and I went and spent every day there.

My favorite exhibit was the Raytheon microwave exhibit. God the machine was pretty good sized back then. But is made darned good bacon, and I managed to get some nearly every day.

1 generation = 30 years

2 generations = 60 years

1949+60 = 2009.

So, the microwave is at least two generations old. Actually it is much older than that because microwave technology was in use in World War II 1940-1945. It was classified information at that time. This led to the establishment of the

The story goes that a technician/engineer noted that while working on a microwave device, a candy bar in his shirt pocket melted. This ultimately led to the use of microwave as a heating method. The first food heating demonstrations involved popcorn and eggs.

Ike Mouser
(isaac.mouser) - F
bpa on 10/01/2010 16:15:28 MDT Print View

im gonna tell my wife not to cook potroast in those bak-in plastic bags anymore. otherwise im fine with my other plasic interactions. i love platy bottles! :P
0

Edited by isaac.mouser on 10/01/2010 16:16:09 MDT.