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Ordering
Gas Stuff
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In order to do classroom demonstrations, you will
need 3 - 5 60-mL syringes, a similar number of syringe caps and
vial caps and 20 cm Latex tubing. You'll also need silicone oil.
Several excellent companies sell these things. Specific details
are given below.
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you are outfitting a class in order to do labs, you'll need more stuff!
For a class of 24 students working in pairs, you should purchase 30
syringes, syringe caps and vial caps, as well as 2 m Latex tubing
and silicone oil. Both Flinn and Educational Innovations sells classroom
kits (Flinn: AP5951 and Educational Innovations: GAS #321)! Check them out! |
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Note:
Prices listed are from 2006 catalogs.
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Syringes.
60-mL
plastic syringes with a LuerLOK fitting (For demonstrating gas chemistry,
the teacher should have about 5 syringes; for a laboratory setting,
estimate 3 syringes per pair.) If you are buying just a few for
demonstrating gas chemistry, try Flinn
or Educational Innovations:
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Flinn
sells individual syringes: Order #AP8754; $3.35 each
(multi-packs are not listed)
Educational
Innovations: Order #GAS-140 $2.25 for 1 -
5; $1.95 for 6+
Buying
a box of 30 saves money — cost drops to less than $1 each!
Fisher only sells in bulk: Order #14-823-2D; $24.61 for 30; $89.49
for 4 pks x 30
S17
Science Supplies EQ 109 (30 syringes $67)
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Syringe
Caps. You
will need one for each syringe — but they are cheap!)
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Flinn
sells Flinn AP8958; ten-pack, $2.25
Educational
Innovations GAS-160, ten-pack, $1.95
S17
Science Supplies EQ 081 (10 syringe caps $ 4.50)
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Plastic
vial caps that fit within
the barrel of the syringe (one per syringe)
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Educational
Innovations GAS-180, ten-pack, $2.50 (25 cents each)
Fisher
Scientific, Part Number 03-340-18E (caps only; $40.13 for 500: 8
cents each) OR Part Number 03-339-26B (These come with the
vials — they cost $36.81 for 144 (25.6 cents each)
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Latex
tubing.
1/8-inch
(3.175 mm) ID, (Each pair of students should have one 15 cm length
and two 4 cm lengths; a ten foot roll would be enough for 13 pairs
of students)
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Flinn
#AP2076; 10-ft, $5.75
Educational
Innovations #GAS-220, 5-ft, $5.95
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Silicone
oil.
(Each pair of students (or every other pair) should have a one-ounce
dropper bottle of silicone oil — they will use a few drops
at a time so the oil will last for years. Also, no other oil works
—motor oil, vegetable oil, and mineral oil are readily absorbed
into the rubber, thus destroying the plunger’s rubber diaphragm.
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Educational
Innovations sells bottles of silicone oil for $5.95. Part #GAS-150.
Fisher
sells dropper bottles and silicone oil separately.
Silicone oil, Fisher #S159-500, $50.54 for 500 mL (will last you
years!)
Poly dropper bottles, Fisher #02-911-870, $174.74 for a case of 48 —
or any dropper bottle will work. (We buy 10 dropper bottles for
$2.50 (25 cents each) from American Science Surplus
(Cat #33983)
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Microscale
Gas Chemistry Book.
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Microscale
Gas Chemistry, 4th Edition (early
2006 release),
Bruce Mattson, Michael Anderson, Susan Mattson
This updated collection of articles that appeared as a series in
Chem13 News from October 1996 - present. Instructions
are given for the generation of 17 different gases on a microscale
level. This book is designed for direct use by teachers. Included
are over 140 experiments and student laboratory activities. This
book is a printed version of the Microscale Gas Chemistry website.
Spiral bound, 485 pages. Educational Innovations BK-595; $39.95 |
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