Table 1 Results of the leak test and volume accuracy test for 16 volume calibration syringes
From: Quality inspection and result analysis of the spirometer calibration cylinder
The evaluation index | NEW-D1 | NEW-D2 | NEW-D3 | NEW-D4 | NEW-D5 | NEW-D6 | NEW-D7 | NEW-D8 | OLD-D1 | OLD-D2 | OLD-D3 | OLD-D4 | OLD-D5 | OLD-D6 | OLD-D7 | OLD-D8 | Overall pass rate/% |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Use fixed number of years | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.5 | 2.5 | 1 | 1.5 | 3 | 3 | 2 | 5 | |
Leak test | |||||||||||||||||
The target volume (mL) | 1000.0 | 3000.0 | 3000.0 | 3000.0 | 3000.0 | 3000.0 | 3000.0 | 100.0 | 3000.0 | 3000.0 | 3000.0 | 3000.0 | 3000.0 | 3000.0 | 3000.0 | 100.0 | |
Objective to reveal (mL/min) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Actual average leakage (mL/min) | 0.1 | 0.2 | 0.9 | 0.5 | 2.5 | 0.0 | 0.8 | 0.3 | 0.3 | 0.1 | 0.4 | 0.2 | 1.0 | 1.9 | — | 0.1 | 75 |
Reveal the mean error value (mL/min) | 0.1 | 0.2 | 0.9 | 0.5 | 2.5 | 0.0 | 0.8 | 0.3 | 0.3 | 0.1 | 0.4 | 0.2 | 1.0 | 1.9 | — | 0.1 | 75 |
Whether through (Y/N) | Y | Y | Y | Y | N | Y | Y | Y | Y | Y | Y | Y | N | N | N | Y | 75 |
Volume accuracy test | |||||||||||||||||
The target volume (mL) | 1000.0 | 3000.0 | 3000.0 | 3000.0 | 3000.0 | 3000.0 | 3000.0 | 100.0 | 3000.0 | 3000.0 | 3000.0 | 3000.0 | 3000.0 | 3000.0 | 3000.0 | 100.0 | |
Average volume measurement (mL) | 992.2 | 2994.7 | 2996.9 | 3003.0 | 2990.9 | 2995.7 | 3001.2 | 96.9 | 2994.4 | 2998.6 | 2992.5 | 2990.6 | 2995.4 | 2998.9 | 2979.2 | 92.1 | 88 |
Volume mean error range (mL) | 0.5 | 0.4 | 0.6 | 0.5 | 0.8 | 1.4 | 0.4 | 0.4 | 1.5 | 0.6 | 1.0 | 1.2 | 0.4 | 1.8 | 13.5 | 0.9 | 69 |
Volume mean error (mL) | − 7.8 | − 5.3 | − 3.1 | 3.0 | − 9.1 | − 4.3 | 1.2 | − 3.1 | − 5.6 | 1.4 | − 7.5 | − 9.4 | − 4.6 | − 1.1 | − 20.8 | − 7.9 | 88 |
Whether through (Y/N) | N | Y | Y | Y | Y | Y | Y | N | Y | Y | Y | Y | Y | N | N | N | 69 |
Two tests whether through (Y/N) | N | Y | Y | Y | N | Y | Y | N | Y | Y | Y | Y | N | N | N | N | 56 |