Rettberg 

Rettberg
Bubble Counter with Non-Return Valve

For monitoring the flow rates of gases. This bubble counter can't be used with a charge of Hg as a mercury valve.
Rettberg  Bubble Counter with Non-Return Valve
DescriptionPUOrder No.in StockPrice/Unit/NOK 
Bubble counter with non-return valve15012570-501.00Order
Accessories:
High-vacuum silicone greases KORASILON / Kurt Obermeier