Brandt Instruments, representing Gasco calibration gases, ecosmart refillable cylinders, regulators, cases
     
Gasco Nonreactive Single Gas Button Link
Gasco Non-reactive Multiple  Gas Button Link
Gasco Ecosmart Refillable  Button Link
Gasco HPC Regulaator, Valves, Flow Meter, Cases & Bags Button Link
Gasco Reactive Single Gas Button Link
Gasco Reactive Multiple  Gas Button Link
Gasco Order Form Button Link

                                                                            home » Gasco » Statement of Quality Assurance of Calibration Gas Mixtures


Gasco Precision Calibration & Bump Gases
For
Gas Detectors, Environmental Meters
IAQ & Laboratory Instruments

GASCO Statement of Quality Assurance of Calibration Gas Mixtures

Gasco ISO 9001 Logo

Gasco gas mixtures for filling disposable pressure vessels are produced gravimetrically (by weight) using sensitive modern balances capable of weighing the relatively heavy cylinders to an accuracy of plus or minus 0.1 gm.  This equipment allows direct measurement of cylinder content during filling, and eliminates potential errors associated with indirect, manometric (pressure based) mixing techniques, which are subject to inaccuracies due to temperature, gas compressabilities and non-ideal behavior.

The weights used to calibrate the balances are all traceable to National Physical Laboratory (NPL) and NIST standards which ensures standard gas mixtures are of the highest possible accuracy.  High purity precursor gases are used to ensure gravimetric filling calculations hold true.

The certification accuracy of gravimetric mixtures is dependent on the concentration levels of particular components and on molecular weights.
Typically, the accuracy for a given concentration is:

Concentration Certified Accuracy

 5 to 10 PPM depends on components (typically ±10%)
 10 PPM to 50 PPM ±5%
 50 PPM to 1% ±2%
 1% to 10% ±2%
 10% to 50% ±2%
Gasco’s non-refillable products are labeled with the nominal concentration requested by customers.  Gasco does not use the exact values from the production process.  Thus there is a tolerance which must be added to this figure, which is typically:

Concentration Certified Accuracy

 10 to 50 PPM ±20%
 50 PPM to 1% ±10%
 1% to 10% ±10%
 10% to 50% ±5%
Where analytical work is required to certify minor components, the accuracy is plus or minus 2%.

Gasco’s non-refillable pressure vessels are filled and supplied in accordance with their ISO 9001 procedures.  All incoming materials are checked and inspected for conformance to agreed specifications.  All dispatched products are inspected for quality and aesthetics.

 

Cylinder Disposal Statement of Confidentiality

SDS Link

 


Return to Brandt Instruments
For more information  Email Mail
Brandt Instruments, Inc. 
    18568 Oak Grove Parkway 
    Prairieville, LA  70769 
1-800-337-6291  
Phone: 225-673-6776
    Fax: 225-673-6725
 

Visa, MC, AmEx, Discover Cards

Copyright © 2002-2016 Brandt Instruments, Inc.

Notice: This publication is intended for general information only and should not be used as a substitute for reviewing applicable government regulations, equipment operating instructions, or legal standards. The information contained in this document should not be construed as legal advice or opinion nor as a final authority on legal or regulatory procedures. Brandt Instruments, Inc. reserves the right to make any changes to information, features, and specifications of any product without notice. Brandt Instruments, Inc. has made every effort to ensure the accuracy of information displayed on this web site, however, Brandt Instruments, Inc. is not responsible for typographical errors appearing on this web site. Price and availability information is subject to change without notice.