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And just a heads up about Polycarbonate.
http://www.niehs.nih.gov/health/topics/agents/sya-bpa/

Bisphenol A

What is bisphenol A?

Bisphenol A (BPA) is a chemical produced in large quantities for use primarily in the production of polycarbonate plastics and epoxy resins.



Where is BPA found?

Polycarbonate plastics have many applications including use in some food and drink packaging, e.g., water and infant bottles, compact discs, impact-resistant safety equipment, and medical devices. Epoxy resins are used as lacquers to coat metal products such as food cans, bottle tops, and water supply pipes. Some dental sealants and composites may also contribute to BPA exposure.



How does BPA get into the body?

The primary source of exposure to BPA for most people is through the diet. While air, dust, and water are other possible sources of exposure, BPA in food and beverages accounts for the majority of daily human exposure.



Bisphenol A can leach into food from the protective internal epoxy resin coatings of canned foods and from consumer products such as polycarbonate tableware, food storage containers, water bottles, and baby bottles. The degree to which BPA leaches from polycarbonate bottles into liquid may depend more on the temperature of the liquid or bottle, than the age of the container. BPA can also be found in breast milk.



Why are people concerned about BPA?

One reason people may be concerned about BPA is because human exposure to BPA is widespread. The 2003-2004 National Health and Nutrition Examination Survey (NHANES III) conducted by the Centers for Disease Control and Prevention (CDC) found detectable levels of BPA in 93% of 2517 urine samples from people six years and older. The CDC NHANES data are considered representative of exposures in the United States. Another reason for concern, especially for parents, may be because some animal studies report effects in fetuses and newborns exposed to BPA.





If I am concerned, what can I do to prevent exposure to BPA?

Some animal studies suggest that infants and children may be the most vulnerable to the effects of BPA. Parents and caregivers, can make the personal choice to reduce exposures of their infants and children to BPA:
•Don’t microwave polycarbonate plastic food containers. Polycarbonate is strong and durable, but over time it may break down from over use at high temperatures.
•Plastic containers have recycle codes on the bottom. Some, but not all, plastics that are marked with recycle codes 3 or 7 may be made with BPA.
•Reduce your use of canned foods.
•When possible, opt for glass, porcelain or stainless steel containers, particularly for hot food or liquids.
•Use baby bottles that are BPA free.
 
Fil said:
that had passed by my radar... pause for thought...

I did not read it Fil, but to save me time how many kg of it to you have to eat a day to harm yourself. :)

S
 
fermentall said:
50kg Springer :lol:
:lol:
Near enough for me, I will stick around the 40 kg mark then, just to be safe ;)
S
P.S. Not worried at my stage of the game, but might listern to a really informed opinion from Cyclops, I don't think you are really qualified to offer any advice Ferm. :lol:
 
fermentall said:
Harsh comments (not qualified,no need to tell everyone) :sulk: :lol: i reckon your safe at 40 kg in my limited knowledge opinion :D

Sorry Ferm, I really didn't know you weren't qualified, just quessed, now you have let the cat out of the bag. :) It just seemed to me that 50kg was a lot, I should know, cos I am not qualified either. ;) :lol:
S
P.S. I'm off,........... cos we have hijacked the thread, :shock: . Will watch and wait for C to come and put us both right. :D
 
The info cyclops has quoted is correct and there have been rumblings for years about studies in the US and links to this and that. Most manufacturers will not change their processes until they have too, so avoiding BPA is almost impossible. Some U.K manufacturers are changing their packaging, I picked up a packet of sarnies the other day with BPA free stamped on it.
If you want to worry about it then don't use it, but see if you can avoid it 1st...it'll be almost impossible :roll:
I was having a pm convo with belter the other day re plastics and BPA amongst others. BPA is the 1st to be highlighted seriously, but there's an avalanche waiting to happen re plasticizers and suitability for use. It would be safer to assume no plastic is safe, including HDPE and that'd not be good for the HB market re FV's etc.
As there's no real way to prevent exposure to BPA the only thing you can do is minimise exposure to it. Stainless, as usual, is the way to go, but I can't see everyone spending £600+ on a shiny conical when they can buy a plastic bucket for £7.

If this topic is seen as a subject on its own then we can split it off so we can talk about it somewhere else :thumb:
 
No doubt the info C quoted is correct, :D I had a quick read, it seemed to talk alot and not say much. :? Might be something in it. :?
These days our water is distributed in plastic pipes, much better than lead though, now that was dodgy. :)
I remember when my mum took away my favourite lead solders and gave me plastic ones to chew, :hmm: thinking about it something must have affected me. :? :lol:
S
 
Its been a while since I did organic chemistry but looking at it surely most of this is going to come off during the boil anyway?

D
 
8440415330_cba0ffa179.jpg


15l drained wonderfully thru the spent grain of my currently chilling brew.... :)

As soon as the full on drain started to dribble i shut off the valve and dug a view of the drain...

8439327367_4bee4b3cf0.jpg


disturbing the bed didnt cause any more to drain out, and when measured i had a couple of hundred ml shy of the measured 15l that went in which i discovered as deadspace when i pulled the grain and fb out to clean...

full steam ahead with big ag#1
 
Give it a go. :D
I don't know if spent grain will behave like a mash, but an adequte flow rate is the important bit.. :)

S
 
Your right, not a perfect test, but a good enough indicator for me to attempt a proper mash, without further drilling.. when i finish the boiler n hlt ;)
fingers crossed......
 
piddledribble said:
a stainless steel false bottom 30 cm in dia is available from one of our sponsors ...

http://www.thehomebrewcompany.co.uk/fal ... -1344.html
with some tubing affixed around its edge it makes an effective seal against in-comming grains... :D and allows the wort to flow perfectly...

It also saves on having to drill those numerous holes....

What is the connector for in the middle of that false bottom?

I'm planning to make a mash tun out of some large plastic pots I have good access to (inner and outer witht insulation between). It willl be a bottom drain, so a false bottom seems to be the right way to go, but I'm looking for a cheap way of making one.

I thought it was just as simple as a sheet of mesh with a couple of supports, but now I see that with what looks like a hoselock connector.... I'm easily confused with this stuff, so help.. :D
 
afaik the commercial domed perforated SS false bottoms have a hosetail which allow simple connection with suitable hose to your tap point..
 
afaik the commercial domed perforated SS false bottoms have a hosetail which allow simple connection with suitable hose to your tap point..
They do. You may wish to consider changing this and using a 15mm to 10mm straight reducer to a length of 10mm copper tube swan necked to the tap, as the hose variant can lift when stirring the mash. It can also 'lift' with bubbles generated when using in the copper, making recirc sanitising of pumps/chillers more 'challenging' :grin:
 
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