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Tubes, Test, Accessories, continued
Test Tube Rack, Wood, 12-Tube
A beechwood, oil-finished rack, glued using dovetailed lock joints. Rack accepts 10
tubes up to 19 mm in diameter and two tubes up to 25 mm in diameter. The heavy
base includes 12 drying pins and a groove for holding stirring rods, pipets, etc.
Catalog No. Description Price/Each
AP1319 Test Tube Rack, Wood, 12-Tube $19.40
Test Tube Rack, Wood, Double Row
Top quality wooden racks conveniently hold 12 test tubes—six tubes per row. Two
sizes available.
Catalog No. Description Holds Tube Size Price/Each
AP5376 Test Tube Rack, Wood, Double Row 22 mm $15.00
AP5377 26 mm 14.50
Test Tube Rack, Wood, 13-Tube
A beechwood, oil finished rack, glued using dovetailed lock joints. Rack accepts 13
tubes. Six drying pins. Top shelf holes are 13/16" in diameter. Middle shelf holes are 1"
in diameter.
Catalog No. Description Price/Each
AP1318 Test Tube Rack, Wood, 13-Tube $17.95
Test Tube Rack, Wood, Semi-micro
Top quality wooden rack holds fifteen 13-mm or 16-mm test tubes. Solid one-piece
durable construction will last for years.
Catalog No. Description Price/Each
AP5999 Test Tube Rack, Wood, Semi-micro $12.75
APPARATUS TUBES, TEST, ACCESSORIES
Test Tube
Rack, Wood,
Double Row
AP5376, etc.
Test Tube Rack, Wood, 13-Tube
AP1318
Test Tube Rack, Wood,
Semi-micro
AP5999
Test Tube Rack, Wood, 12-Tube
AP1319
Test Tube Rack,
Wood, 6-Tube
AP8220, etc.
Gas-Generating Bottles and Kits
See pages 119–120.
Wire Test Tube Racks
Heavy gauge steel. Two sizes available. 20-tube rack accepts 2 rows of 10 tubes each
and is available with or without a black epoxy coating. 40-tube rack accepts 4 rows
of 10 tubes each and is available with or without a black epoxy coating.
Catalog No. Description Coating
Tube
Places
Holds
Tube Size Price/Each
AP1316 Wire Test Tube
Racks
None 20 22 mm $28.05
AP1317 Black Epoxy 27.80
AP1314 None 40 19 mm 26.05
AP1315 Black Epoxy 28.15
Tubes, Thistle
Thistle Tube, Glass
A useful piece of glassware for adding chemical solutions to a reaction vessel, such
as those used in the generation of gases. Thistle tubes minimize the risk of a reaction
occurring too quickly and bubbling over. When the stem of the tube is submerged,
there is no risk of chemicals traveling back up to the top of the thistle tube due to
pressure build-up. 300 mm x 40 mm x tube o.d. 6 mm.
Catalog No. Description Price/Each Price/Case
GP8004 Thistle Tube, Glass $11.35 $129.60/12
Thistle Tube, Polyethylene
A safe, student-friendly, and economical method for delivering a solution to your gas
generator set-up. 250 mm x 35 mm x tube o.d. 6.5 mm.
Catalog No. Description Price/Each
AP8160 Thistle Tube, Polyethylene $4.49
Thistle Tube,
Glass
GP8004
Thistle Tube,
Polyethylene
AP8160
Test Tube Rack, Wire, 20-Tube
AP1316
Test Tube Rack,
Wire, 40-Tube
AP1314
• Discard the first bottle of hydrogen gas collected
since it will contain air which,
in turn, contains oxygen. Hydrogen mixed with oxygen is an explosion hazard.
• Carbon dioxide gas can be generated using the same setup with marble
chips and hydrochloric
acid.
• Thistle tube must always be submerged below the liquid level.
Thistle Tube
Gas Collecting Bottle
Hydrogen
Gas
Water
Pneumatic
Trough
Dilute
Sulfuric
Acid
Zinc
Bottom of thistle
tube must be
submerged
Water
Set Up a Thistle Tube
Gas Generator
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