| Date: |
2011-12-12 |
| From: |
Lab - none |
| To: |
Lab - none |
| Title: |
Calibration |
| Notes: |
Calibrated in differential mode for check of new secondary CO2 standards. Ambient temperature was 18.987C, pressure was 99.746kPa. Using zero air (800psi)and god bottle 370.91ppm CO2 (1650psi).
Flowing zero air in both sample and reference
CO2 = -0.20umol/mol adjusted to zero.
H2O = -0.0.004mmol/mol not adjusted
Flowing zero air in reference and god bottel in sample
CO2 = 370.25ppm adjusted to 370.91ppm.
Flowing zero air in reference and new secondary standard in sample, I wrote down about 60 readings and made an average. One new CO2 secondary standard has 421.63ppm CO2, the other was 436.52ppm CO2. Both tanks were label. |
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