... of flow Superior accuracy at constant flow3. Low maintenance, no metaltometal contact in measuring chamber, ... adhesives (neutral pH), also for metering herbicides and nitrogen fertilizer solutions;10. Herbicide;11. Sodium hydroxide (caustic ... Liquefied gases , Lube oils , Marine , Paint and varnish , Petroleum marketing , Petroleum production , Pharmaceutical , Printing ink , Pulp &paper , Refining ...