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Cider Digest #1208
Subject: Cider Digest #1208, 18 March 2005
From: cider-request@talisman.com
Cider Digest #1208 18 March 2005
Forum for Discussion of Cider Issues
Dick Dunn, Digest Janitor
Contents:
Re: Narrow-Range pH Paper ("Gary Awdey")
narrow range litmas paper (samuel billing)
narrow-range pH paper (Eli Brandt)
Basic Cider Recipe (Steve Thompson)
Re: narrow-range pH paper (Dick Dunn)
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Subject: Re: Narrow-Range pH Paper
From: "Gary Awdey" <gawdey@att.net>
Date: Sun, 13 Mar 2005 23:11:23 -0500
In Cider Digest #1207 Dick Dunn wrote:
>Does anybody know of a US source for narrow-range pH paper? I know that
>Andrew had found some in the UK, but I've been unable to Google up a
>source for anything in the US. The best I can find is accurate to 0.5,
>which is just not enough. The ideal would be something like a range of
>3-4, able to be read to 0.2
Paper test strips in the pH range of 2.8 to 4.4 are available from Homebrew
Heaven at http://www.homebrewheaven.com/htmlcatWineTesting.htm (and they're
probably available elsewhere as well). They come with a small color chart
with pH increments of 0.2. They're difficult to read if you don't have a
decent spectrum of light. Daylight is best, but I've found that they're not
too bad if you read under a combination of bright fluorescent and
incandescent light. I bought some a few months ago to see how well they
work and how convenient they are to use. When the container holding my pH
electrode and pH 4.0 buffer solution tipped over and spilled the contents it
was good to have the paper strips as a backup. The paper is labeled as
"'Precision' pH Control Paper No. 2844" The label also indicates that the
supplier is Precision Labs, Inc. of West Chester, Ohio. If I could find
another similar type of paper I'd probably use it concurrently to get more
confidence in my reading. When I first used them the readings agreed
closely with the pH meter. With more recent batches of cider, however, I've
found that none of the colors on the chart matches the color seen on the
test strip until the strip dries and I wish that I'd ordered more pH buffer
solution for the meter.
Gary Awdey
Eden, NY
------------------------------
Subject: narrow range litmas paper
From: samuel billing <samuelfromme@yahoo.com>
Date: Mon, 14 Mar 2005 04:18:36 -0800 (PST)
Subject: narrow-range pH paper
From: rcd@talisman.com (Dick Dunn)
Date: Thu, 10 Mar 2005 09:34:03 -0700 (MST)
Does anybody know of a US source for narrow-range pH paper?
Dick
Try www.eckraus.com , I think they might have what you want, $5.50 per 100
------------------------------
Subject: narrow-range pH paper
From: Eli Brandt <eli+@cs.cmu.edu>
Date: Tue, 15 Mar 2005 14:02:13 -0500 (EST)
Dick Dunn wrote:
> Does anybody know of a US source for narrow-range pH paper? I know that
> Andrew had found some in the UK, but I've been unable to Google up a
> source for anything in the US. The best I can find is accurate to 0.5,
> which is just not enough. The ideal would be something like a range of
> 3-4, able to be read to 0.2. (OK, 0.1 would be "more ideal" but I'm
> trying to be realistic!)
Googling with "ph strips" turned up several sources selling what may
be the same product: range 2.5 - 4.5, accuracy 0.2 or 0.3 (which I
hope means a usable gradation of 0.2 rather than an error of +/- 0.2).
http://www.allometrics.com/ph_strips.htm
http://www.waco-lab-supply.com/phmeter.htm
- --
Eli Brandt | eli+@cs.cmu.edu | http://www.cs.cmu.edu/~eli/
------------------------------
Subject: Basic Cider Recipe
From: Steve Thompson <srthompson@gmail.com>
Date: Wed, 16 Mar 2005 06:13:01 -0500
Hi All,
Long time mead maker, delving into making cider, I want to make a good
basic hard sparkling cider -- As a point of reference, I've purchased
'The Art of Cidermaking' by Paul Correnty:
1) Paul has a recipe for a new england cider that calls for powdered
tannin -- is this necessary?
2) What do you prefer for yeast? I have Lalvin EC-1118 and K1-V1116 in
my refrigerator, but would purchase another if it would be better? (I
like my meads on the dry side)
3) What should I shoot for a SG? Paul was a little vague on that point
somewhere around 1.060?
Steve
------------------------------
Subject: Re: narrow-range pH paper
From: Dick Dunn <rcd@talisman.com>
Date: Thu, 17 Mar 2005 23:18:55 -0700
Thanks to the good offices of CD subscribers (both on and off list) I have
various sources of narrow-range pH paper. I'll check them out and report
back on what works. Great! And I really do think this is a better
approach for most (small-scale) cidermaking purposes than a pH meter.
Thanks to all who helped.
In the course of pursuing the question, I got my share of bad web sites--
the "you can't look without cookies and registering", the seven-levels-down
before you get to the item you want (and then maybe the link is broken),
all that stuff. But I figure those folks will be weeded out by normal
business pressure (if you won't take money and deliver product, you're
history).
I also got some education in presenting queries...such as the difference
between "pH paper" and "pH strips". Writing useful queries remains an art,
one for which all my software experience is at best useless.
Now what I want is a simple dip-strip test for tannin!
- --
Dick Dunn rcd@talisman.com Hygiene, Colorado USA
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End of Cider Digest #1208
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