Armitage Shanks Markwik 21+ Panel Mounted Basin Lever Mixer With Detachable Spout A6682AA A Powerful Ally in the Fight Against Infection Markwik 21+ builds on a proud history in healthcare innovation to bring the pinnacle range in the fight against bacteria. Designed to defend, this range includes built-in thermal cleaning features, anti-bacterial outlet, auto-flush technology and a hydropurge system for debris and waste reduction during installation. Furthermore, by mixing water closer to the point of discharge, MARKWIK 21+’s integral thermostat minimises ‘dead leg’ areas of warm water where bacteria can grow.