| Product | Peak Flow Meter asmaPLAN and asmaPLAN+ |
| Type of Device | Variable orifice simple mechanical peak flow meter |
| Peak Flow Meter Standard | ISO23747:2007 |
| Safety Standards | EN ISO 60601-1:2005 -1 -2 |
| Medical Safety Standard | Medical Devices Directive 93/42/EEC 1993 |
| Designed & Manufactured Under | ISO 13485:2003, FDA 21CFR820, CMDR & JPAL |
| Range | 50-800L/min |
| Accuracy | Better than 10% |
| Repeatability | Better than 5% or 10L/min whichever is greater |
| Inter-Instrument Variation | Better than 5% or 10L/min whichever is greater |
| Scale Intervals | 10L/min below 700, 20L/min above |
| Daily Record Chart | Included |
| Measuring Principle | Piston/spring and moveable pointer |
| Frequency Response | A/B difference less than 15L/min/15% (Annex B of ISO23747:2007) |
| User Instructions | Multi-language instruction sheet |
| Clinic Use | Certify accuracy at least annually using a certified calibrated spirometer |
| Home Use | Replace every three years |
| Net Weight | 74g |
| Highest Resistance to Flow | 0.00384KPa/L/min@ 720L/min |
| Storage | Temperature: 0-50 degrees Celsius |
| Relative Humidity | 10%-95% |
| Dimensions | 150 x 60 x 34mm (incl. integral mouthpiece) |