Suction Unit 1 Bottle

Maximum suction flow and negative pressure (varies by model).

Bottle capacity (often 1-2 litres for the collection bottle).

Portability: weight, handle/carry, or mounted on stand.

Power supply: AC 220-240 V; some models may have battery backup.

Quiet operation, easy maintenance (especially if oil-free pump).

Transparent bottle with graduations, overflow guard.