Should My Flow Meter be ROHS/REACH Compliant?

ROHS and REACH originated in the European Union in 2003 and 2007 respectively. ROHS (Restriction of Hazardous Substances directive) restricts the use
of 10 hazardous or potentially hazardous elements used in the manufacture of electronics and electrical equipment.  There are a few exceptions. 

REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) deals with the production and use of chemicals and the impact they may have on human health and the environment.

The EU requires compliance with ROHS/REACH requirements in order to sell Electronic/Electrical products and REACH listed chemicals in the EU countries.  A large number of US states and companies now follow ROHS/REACH certification regulations.

In answer to the title question, from the standpoint of the environmental and health and safety considerations the answer is yes.  If you purchase a product from an EU country or from a US company that exports their products, they most likely are compliant.  You can generally find a ROHS/REACH statement on their company website and/or their product literature.  If not a call to customer service should provide an answer.