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1. The hand-held oxygen analyser adopt ultrasound principle and long service life
2. The hand-held oxygen analyser is a accurate oxygen measurements to test PSA oxygen machine
4. The hand-held oxygen analyser is small and only 146gram
5. The hand-held oxygen analyser uses 9V battery for running
2. The hand-held oxygen analyser is a accurate oxygen measurements to test PSA oxygen machine
4. The hand-held oxygen analyser is small and only 146gram
5. The hand-held oxygen analyser uses 9V battery for running