Ph accuracy.

Ph accuracy.

Science

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rc

Joined
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38239
03 Aug 16

The science of brewing and fermentation is called zymurgy 😲

s
Fast and Curious

slatington, pa, usa

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03 Aug 16

Originally posted by robbie carrobie
An awesome piece of kit but its 400 bucks which is not excessive. If I were a small microbrewery producing commercial beer/lager I would certainly get this.

Yes the article makes the point that temperature is paramount and what a home brewer basically has to do is extract some of the liquid and reduce it quickly to 20 Celsius by putting it in t ...[text shortened]... er specialising in water resources.

https://sites.google.com/site/brunwater/water-knowledge
The great thing about that sensor is it does temperature and Ph in the same head, looks very convenient to me.

So how many gallons do you brew at one time?

rc

Joined
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03 Aug 16
5 edits

Originally posted by sonhouse
The great thing about that sensor is it does temperature and Ph in the same head, looks very convenient to me.

So how many gallons do you brew at one time?
Gallons? please dude, litres is the thing. 😛 Normally a single batch is about 23 litres, wastage takes it down to about 19 litres which is about the right size for a Cornelius keg, I have these stainless steel kegs that I pressurise with co2 after fermentation. I built a bar out of a freezer using a programmable temperature controller STC-1000. Its pretty neat, I pimped it up with blue LED's and spray painted it black and metallic silver. It has a two faucet beer tap on top.

So whats that about an initial five gallon batch which drops down to about four? If I can keep the teenagers away it last for ages, but if not they drink it more than me. My trick is , is to make beers that are too bitter for their taste and they leave it alone, but if I make a slightly sweet beer, like a Mexican Cerveza, they polish it off in no time. I make beers for my dad cause he likes home-made beer but not the kind of stuff you buy in the shops. He's 74.

Cape Town

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03 Aug 16

Originally posted by robbie carrobie
Its eighty bucks for a basic good one and about 300 bucks for an awesome one and the cost does not justify its usage for I would be using it about six times out of the year, that adds considerable overheads to a single 23 litre batch of beer.
Why not get something cheaper like this:
https://www.amazon.com/Etekcity-Digital-Measurement-Resolution-Handheld/dp/B01AI10NQ6/ref=sr_1_1?ie=UTF8&qid=1470228893&sr=8-1&keywords=etekcity+ph
0.01 Resolution
US$14

s
Fast and Curious

slatington, pa, usa

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Moves
53223
03 Aug 16

Originally posted by twhitehead
Why not get something cheaper like this:
https://www.amazon.com/Etekcity-Digital-Measurement-Resolution-Handheld/dp/B01AI10NQ6/ref=sr_1_1?ie=UTF8&qid=1470228893&sr=8-1&keywords=etekcity+ph
0.01 Resolution
US$14
The question here is how well does it calibrate, life time is not so much an issue at 14 bucks but is it really capable of accurate readings less than 1/10th of a Ph level?

rc

Joined
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Moves
38239
03 Aug 16
2 edits

Originally posted by twhitehead
Why not get something cheaper like this:
https://www.amazon.com/Etekcity-Digital-Measurement-Resolution-Handheld/dp/B01AI10NQ6/ref=sr_1_1?ie=UTF8&qid=1470228893&sr=8-1&keywords=etekcity+ph
0.01 Resolution
US$14
Hi twhitehead, this is one of the cheap ones that I bought already, it calibrated ok, but when i went to use it it was showing crazy readings, I came to the conclusion that it cannot be trusted! A brew master must be able to trust his equipment, everything is calibrated, hydrometer, temperature controllers, pH meters etc

rc

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03 Aug 16
1 edit

Originally posted by sonhouse
The question here is how well does it calibrate, life time is not so much an issue at 14 bucks but is it really capable of accurate readings less than 1/10th of a Ph level?
In my opinion and experience, no. If I was giving advice I would say that quality instruments go two decimal points and avoid ones that do not. Why do you need to measure pH?

s
Fast and Curious

slatington, pa, usa

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03 Aug 16

Originally posted by robbie carrobie
In my opinion and experience, no. If I was giving advice I would say that quality instruments go two decimal points and avoid ones that do not. Why do you need to measure pH?
Why do I need to measure Ph? We use chemicals that need to be neutralized to enable them to be scrapped out and delivered to recovery house or to safely drop down a drain. Like a highly basic Ammonium Hydroxide, we have to buffer down to 7 to be able to run it down a drain or so.

rc

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38239
03 Aug 16

Originally posted by sonhouse
Why do I need to measure Ph? We use chemicals that need to be neutralized to enable them to be scrapped out and delivered to recovery house or to safely drop down a drain. Like a highly basic Ammonium Hydroxide, we have to buffer down to 7 to be able to run it down a drain or so.
Gotcha you work in a crystal meth factory, wink! wink! 😵

s
Fast and Curious

slatington, pa, usa

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03 Aug 16

Originally posted by robbie carrobie
Gotcha you work in a crystal meth factory, wink! wink! 😵
JEEZ do you have to TELL everyone? How else am I going to afford the alimony for 6 x wives?

rc

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03 Aug 16
1 edit

Originally posted by sonhouse
JEEZ do you have to TELL everyone? How else am I going to afford the alimony for 6 x wives?
LOL 6 wives you must be a glutton for punishment, one is enough for any man! I was looking at videos of people making Crystal Meth, it looks way dangerous, they are ripping batteries apart to get lithium and making some kind of hydrochloric acid during the process as well.

s
Fast and Curious

slatington, pa, usa

Joined
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Moves
53223
03 Aug 16
1 edit

Originally posted by robbie carrobie
LOL 6 wives you must be a glutton for punishment, one is enough for any man! I was looking at videos of people making Crystal Meth, it looks way dangerous, they are ripping batteries apart to get lithium and making some kind of hydrochloric acid during the process as well.
Nah, we are much more advanced here, we have our own lithium mine'😉

Cape Town

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04 Aug 16

Originally posted by robbie carrobie
A brew master must be able to trust his equipment, ....
Then a brew master must be willing to spend.... 🙂

The device claims to be 10 times more accurate than you require. Surely with a bit of experimentation you can figure out why you were getting crazy readings?

Cape Town

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04 Aug 16

Originally posted by sonhouse
Why do I need to measure Ph? We use chemicals that need to be neutralized to enable them to be scrapped out and delivered to recovery house or to safely drop down a drain. Like a highly basic Ammonium Hydroxide, we have to buffer down to 7 to be able to run it down a drain or so.
And you need to get the acidity down to 7.00000 exactly? Seems like over kill for a drain.

s
Fast and Curious

slatington, pa, usa

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04 Aug 16

Originally posted by twhitehead
And you need to get the acidity down to 7.00000 exactly? Seems like over kill for a drain.
No, even more than that. 7.0000000000 or else we get sued🙂