Personal Air Sampler
1. Use the flow lock card to adjust the flow to ensure that the flow fluctuation is less than 5% during the long-term sampling process of low flow.
2. Select a more stable air pump suitable for low flow, and the negative air pressure is more than 5000Pa.
3.4 digits display timing, working noise
4. There is a filter element inside to prevent particles from being sucked into the pump.
5. With under-voltage indication and buzzer alarm.
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