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- From: "Stephen Sadler" <Docshiva@Docshiva.org>
- To: "'North American Fruit Explorers'" <nafex@lists.ibiblio.org>
- Subject: Re: [NAFEX] Caffeine concentration?
- Date: Sat, 12 Aug 2006 13:40:00 -0700
You need to know whether you want 2% by weight or 2% by number of molecules.
Water molecules are much smaller than caffeine molecules, so there's lots of
them in a gallon, and it takes many caffeine molecules to make 2%.
By molecular concentration, you'd need 1¾ lbs.
I would think you need 2% by weight. A gallon of water weighs about 3783
grams; 2% of that is about 75 grams.
Stephen
-----Original Message-----
From: nafex-bounces@lists.ibiblio.org
[mailto:nafex-bounces@lists.ibiblio.org] On Behalf Of loneroc
Sent: Saturday, August 12, 2006 1:15 PM
To: North American Fruit Explorers
Subject: [NAFEX] Caffeine concentration?
Greetings group,
I have a chemistry question. How much caffeine do I need to add to one
gallon of water to make a 2% solution? I just learned that this is the most
lethal concoction yet discovered for snails and slugs. My orchids have
become horribly infested with tiny bush snails since I stopped watering the
plants with Cygon (dimethoate, a toxic systemic insecticide) twice a year.
I used Cygon for brown scale, principally, and when I switched to Enstar (an
insect hormone) to kill the scale there was no longer poison to do in the
snails and slugs.
My caffeine source is generic No-Doz pills at 200 mg. of caffeine each.
Steve Herje, Lone Rock WI
-
[NAFEX] patenting questions,
tanis cuff, 08/12/2006
-
Re: [NAFEX] patenting questions,
list, 08/12/2006
-
[NAFEX] Caffeine concentration?,
loneroc, 08/12/2006
- Re: [NAFEX] Caffeine concentration?, Stephen Sadler, 08/12/2006
-
[NAFEX] Caffeine concentration?,
loneroc, 08/12/2006
- Re: [NAFEX] patenting questions, road's end farm, 08/12/2006
- <Possible follow-up(s)>
- Re: [NAFEX] patenting questions, Philip Stewart, 08/12/2006
- [NAFEX] patenting questions, Pete Tallman, 08/12/2006
-
Re: [NAFEX] patenting questions,
list, 08/12/2006
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