Gas Calibration Standards

Which Calibration Gas Standard is Right for Your Application?

Parameter Wafer Dynacal Perm Tubes G-Cal Bottled Gas
Lifespan 12 months from date of shipment 12 months from date of shipment 12 months from date of shipment Depending on the chemical, 1 year from fill date in most cases
Handling No permitting or dangerous goods handling required No permitting or dangerous goods handling required No permitting or dangerous goods handling required May require permitting, specialized dangerous goods handling procedures
Environment Laboratory Laboratory Field / Laboratory Laboratory
Temperature Requirements Require temperature-controlled environment 30° – 50°C Require temperature-controlled environment 30° – 110°C Can be operated at ambient temperature. No oven or Dynacalibrator required. Wafer devices available at 50°C Not temperature sensitive - can be operated at room temperature.
Size Length 5.5 cm, Diameter 1.6 cm Small for flexibility and convenience. Maximum length of 23.5cm. Maximum diameter 1 cm 1.0" W x 4.25" L, 1.0" W x 6.25" L, 1.0" W x 8.0" L (Gas Phase) Depending on Chemical and Rate. Bulky, takes up valuable lab space
Arsine and Phosphine compatible No No Yes. Limited Rates (200 ng/min – 1,000 ng/min) Yes - But very difficult to obtain. Extremely expensive. DOT/ICAO Security Plan may be Required.
Chemicals H2S SO2 , COS, NO2, NH3 More than 500 available, including experimental by request More than 100 available, including developmental chemicals by request Mutually reactive chemicals cannot be used
Customizable mixtures Mixtures can be created by using (chemical compatible) individual devices in a chamber. Vici provides pure chemicals only; no mixtures. Mixtures can be created by using (chemical compatible) individual devices in a chamber. Vici provides pure chemicals only; no mixtures. Mixtures can be created by using (chemical compatible) individual devices in a series. Vici provides pure chemicals only; no mixtures. Expensive custom mixtures must be purchased, or keeping a range of expensive gas cylinders in stock.
Permeation rates Ideal for high vapor pressure substances and low permeation rates, maximum 2500 ng/min Variable, typically 30 ng/min to 4,000 ng/min < 200 ng/min to 30,000 ng/min depending on temperature Set and unchangeable.
NIST traceable Yes Yes Yes Unknown traceability standards
Cost Economical, low cost to ship and store. With Dynacalibrator, break even and cost-savings delivered by Year 2 Economical, low cost to ship and store. With Dynacalibrator, break even and cost-savings delivered by Year 2 Economical, low cost to ship, no Dynacalibrator or oven required High costs, including cylinder purchase, rental, shipment, disposal
Stability / reliability Stable and consistent. Stable and consistent. Stable and consistent. Standard can degrade within the cylinder due to changes in concentration, pressure, and interaction of calibration surfaces and components
Concentrations Customizable, based on dilution flow rate and/or set point temperature Customizable, based on dilution flow rate and/or set point temperature Customizable, based on dilution flow rate and/or set point temperature Fixed non-changeable
Accuracy 98% Accuracy 98% Accuracy 95% Accuracy Unknown accuracy