Specifications include, but are not limited to: 100 ppm Carbon Monoxide; 33A cylinder 100 ppm Carbon Monoxide must meet the EPA Traceability Protocol for Gaseous Calibration Standards for ambient air monitoring. 100 ppm Carbon Monoxide must meet the requirements in Table 2-3 of EPA’s February 25, 2024, memo, EPA Protocol Gas Long-Term Stability Requirements (attached as Exhibit B). 100 ppm Carbon Monoxide must be pressurized to 2,217 PSI at 70 ˚F. 100 ppm Carbon Monoxide must have a 350 CGA clean brass valve. 100 ppm Carbon Monoxide must be balanced with nitrogen. 10 ppm Nitrogen Oxide; 33A cylinder 10 ppm Nitrogen Oxide must meet the EPA Traceability Protocol for Gaseous Calibration Standards for ambient air monitoring. 10 ppm Nitrogen Oxide must meet the requirements in Table 2-3 of EPA’s February 25, 2024, memo, EPA Protocol Gas Long-Term Stability Requirements (attached as Exhibit B). 10 ppm Nitrogen Oxide must be pressurized to 2,217 PSI at 70 ˚F. 10 ppm Nitrogen Oxide must have a 660 CGA clean stainless-steel valve. 10 ppm Nitrogen Oxide must be balanced with nitrogen. 10 ppm Sulfur Dioxide; 33A cylinder 10 ppm Sulfur Dioxide must meet the EPA Traceability Protocol for Gaseous Calibration Standards for ambient air monitoring. 10 ppm Sulfur Dioxide must meet the requirements in Table 2-3 of EPA’s February 25, 2024, memo, EPA Protocol Gas Long-Term Stability Requirements (attached as Exhibit B). 10 ppm Sulfur Dioxide must be pressurized to 2,217 PSI at 70 ˚F. 10 ppm Sulfur Dioxide must have a 660 CGA clean stainless-steel valve. 10 ppm Sulfur Dioxide must be balanced with nitrogen. 30 ppm Sulfur Dioxide; 33A cylinder 30 ppm Sulfur Dioxide must meet the EPA Traceability Protocol for Gaseous Calibration Standards for ambient air monitoring. 30 ppm Sulfur Dioxide must meet the requirements in Table 2-3 of EPA’s February 25, 2024, memo, EPA Protocol Gas Long-Term Stability Requirements (attached as Exhibit B). 30 ppm Sulfur Dioxide must be pressurized to 2,217 PSI at 70 ˚F. 30 ppm Sulfur Dioxide must have a 660 CGA clean stainless-steel valve. 30 ppm Sulfur Dioxide must be balanced with nitrogen.
