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VectraCor/QRS Diagnostics Orbit Mouthpieces (100/Box)
"Mouthpieces for the user of VectraCor/QRS Diagnostics EKG and Spirometry Combo . Comes in a box of 100. All QRS spirometers use pre-calibrated, disposable mouthpieces. These mouthpieces are individually calibrated during production using the same equipment LDS Hospital uses to validate spirome...
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