Page 102 - Demo

Apparatus and Supplies
Gases, Refillable Cylinder Accessories
Control Valve, Stainless Steel
The most economical choice for dispensing gas from a refillable cyl­ inder. Has a single­stage control valve that connects directly to your refillable gas cylinder. Provides coarse control through a manually oper­ ated valve. Fill balloons or attach tubing to the 10" stainless steel stem. For use with the refillable gas cylinders shown above.
Refillable Cylinder Regulator, Brass
Provide your refillable cylinder with accurate pressure control with this single­stage regulator. Deliver pressure from 0–60 PSI. Two gauges show delivery pressure and the amount of gas remaining in the refillable cylinder. Not for use with corrosives like ammonia. Your best choice when you need to dispense gas often.
Gases, Lecture Bottles
The standard lecture bottle is 2" in diameter and 15" long. A lecture bottle will fill approximately five 11" balloons with gas.
These lecture bottles are not refillable. Please consider our refillable gas cylinders on pages 99–101.
Gases, Lecture Bottle, Accessories
Lecture Bottle Regulator
Two­stage precision regulator allows for control of the delivery pressure and control of the pressure in the attached lecture bottle. Very compact unit (6" x 4" x 4"); made almost entirely of brass. Cannot be used with a corrosive gas like ammonia. Contact us for prices on a two­stage regulator for use with corrosive gases.
A swivel inlet fits nicely on your lecture bottle. The exit valve is a 1⁄8" NPT male and a mating hose connection is furnished at no additional cost. Only a wrench is required to mount the regulator and affix the exit (threaded or tubing).
GASES, LECTURE BOTTLE, ACCESSORIES continued on next page.
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100
Control Valve, Stainless Steel LB1052
Refillable Cylinder Regulator, Brass LB2005
Catalog No.
Description
Price/Each
LB1052
Control Valve, Stainless Steel
$470.10
Catalog No.
Description
Price/Each
LB2005
Refillable Cylinder Regulator
$506.00
Balloon Volume Data
Latex Balloon Size
Approx. Volume of Gas
9"
6.2 Liters
10"
8.5 Liters
11"
11.3 Liters
12"
14.7 Liters
14"
23.5 Liters
16"
35.1 Liters
20"
68.5 Liters
Catalog No.
Gas
Contents of Bottle
Price/Each
LB1005
Carbon Dioxide
0.5 lb. (125 liters)
$239.40
LB1010
Helium
2 cu. ft. (56 liters)
407.00
LB1015
Hydrogen
2 cu. ft. (56 liters)
265.05
LB1020
Nitrogen
2 cu. ft. (56 liters)
250.45
LB1025
Oxygen
2 cu. ft. (56 liters)
259.30
LB1030
Sulfur Hexafluoride
0.5 lb. (38 liters)
388.85
Gases, Lecture Bottles LB1005, etc.
Lecture Bottle Regulator LB1050
Catalog No.
Description
Price/Each
LB1050
Lecture Bottle Regulator
$461.40
Prepare O2 and CO2 Yourself
Oxygen Gas Preparation
Oxygen can be generated by using 30% hydrogen peroxide (H2O2). It is vital that you give this substance your highest level of safety consciousness because it is very hazardous. Set up the apparatus to create a gas generator. A drying tube containing anhydrous calcium chloride (Flinn C0016 or C0017) or Drierite® (Flinn D0011 or D0012) will also be required since the O2 will have an undesirably high water content. Place two grams of manganese dioxide (Flinn M0025 or M0026) in the flask. Now dilute 50 mL of 30% H2O2 to 100 mL using distilled water. Then add the diluted H2O2 through the dropping funnel into the flask. This process will generate about 6 liters of oxygen. Do not use potassium chlorate to generate oxygen.
Carbon Dioxide Gas Preparation
CO2 gas can be produced from dry ice. One to two pounds of dry ice should provide sufficient gas for use by 40–50 students. You will have to set up a generator with apparatus that will enable you to heat the dry ice by placing chunks in a water bath. The evolution of gas is not sufficient unless warmed by water. Your delivery tube (from the generator) should be rather long to allow the gas to reach room temperature. A drying tube will also have to be part of the apparatus to remove moisture. Using about 25 grams of calcium carbonate (Flinn C0347 and C0012) and 6 M hydrochloric acid will evolve approximately 6 liters of CO2 at room temperature and sea level pressure. A drying tube should be a part of the generation apparatus.