you're looking at the only
CERTIFIED
A
Calibration Gases
MECHANICALLY REFRIGERATED PORTABLE FREEZE-DRYER on the market today...
Certified Analysis Supplied with each Cylinder The industry's broadest line of span, zero, and multi-component gas mixtures of extremely high purity are now available from Air Products and Chemicals, Inc. To provide maximum quality control and superior analysis, each calibration gas mixture is prepared to order using all appropriate compressibility (Z) factors, and is ther mally blended prior to analysis. Air Products precision-blended mixtures have the following ac curacy of analysis: Percent of Component in Standard 10-50% 5-10% less than 5%
Analysis Accuracy ±0.5% ±0.2% 5% of component value
it's also the lowest priced! Just look at these startling
features:
The condenser chamber is different • It's easily accessible and visible during the
Air Products has been producing calibration gases for over five years for intracompany consumption. Advanced R & D programs required extremely accurate analyses of gas mixtures . . . difficult to purchase on a commercial basis. This line of Air Products certi fied precision-blended mixtures is now available commercially for your calibration requirements.
entire process • In just 5 minutes defrosting and cleaning can take place The unit is complete • Bulk chamber freeze drying and manifold freeze drying can be done at the same time
UNANALYZED GAS MIXTURES Unanalyzed gas mixtures for controlled at mospheres and other less critical applica tions are also available from Air Products.
• Inside of drum can be fitted with removable tray rack with controlled heating
For information on Air Products individually blended calibration gases for your specialty programs, please write Specialty Gas De partment.
Write for further information and comprehensive specification sheet A complete line of Mechanically Re frigerated Freeze Dryers from $550.
A NEW
PAT. PEND.
Air Products αnd Chemicals INC. ALLENTOWN, PENNSYLVANIA
DIMENSIONS
IN G A S
Circle No. 17 on Readers' Service Card 56 A
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ANALYTICAL
CHEMISTRY
TECHNOLOGY
Dept. AC-7
THERMOVAC
INDUSTRIES
CORP.
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