| 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 |
