Lung Function Laboratory

Helsingør, Denmark

Lung Function Laboratory

Helsingør, Denmark
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Madsen F.,Lung Function Laboratory
Scandinavian Journal of Clinical and Laboratory Investigation | Year: 2012

The volume calibration syringe is probably the single most important instrument in pulmonary function laboratories, yet no validation results have been published. In this study a sample of volume calibration syringes was validated. We weighed a 1-L and two 3-L calibration syringes before and after emptying them of water and determined the corresponding volume of gas by using a modified rolling seal spirometer. In this way we established an unbroken calibration chain between a certified weight of water and the corresponding volume of gas. The volume of a spirometer calibration syringe could be verified with an accuracy of ± 15 ml. The modified rolling seal spirometer had an accuracy of ±11 ml at a volume of 1 L and ±13 ml at a volume of 3 L. A sample of spirometer calibration syringes was validated and all syringes except for two small 1-liter syringes all had volumes within the label claimed volume ± 0.5%. Spirometer calibration syringes have a stable stroke volume even after many years of use and storage but have to be calibrated yearly to comply with international standard. © 2012 Informa Healthcare.


PubMed | Lung Function Laboratory
Type: Journal Article | Journal: Scandinavian journal of clinical and laboratory investigation | Year: 2012

The volume calibration syringe is probably the single most important instrument in pulmonary function laboratories, yet no validation results have been published. In this study a sample of volume calibration syringes was validated. We weighed a 1-L and two 3-L calibration syringes before and after emptying them of water and determined the corresponding volume of gas by using a modified rolling seal spirometer. In this way we established an unbroken calibration chain between a certified weight of water and the corresponding volume of gas. The volume of a spirometer calibration syringe could be verified with an accuracy of 15 ml. The modified rolling seal spirometer had an accuracy of 11 ml at a volume of 1 L and 13 ml at a volume of 3 L. A sample of spirometer calibration syringes was validated and all syringes except for two small 1-liter syringes all had volumes within the label claimed volume 0.5%. Spirometer calibration syringes have a stable stroke volume even after many years of use and storage but have to be calibrated yearly to comply with international standard.

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