What are they? 

Water will contain suspended matter including hard particles (e.g. sand, rock, slit and pipework debris), soft particles (vegetal debris) and colloidal particles (organic and non-organic) between 1-10µM. 


Where do they come from? 

The majority of particles within the water system will come from biofilms and those shed by ion exchange resins, other media, tubing and fittings. 


Which Applications do they effect? 

Particulates can build up and cause blockages in any system with fine tubing, filters, atomisers, pumps, LC columns and detectors causing issues with HPLC, ICP-MS etc. 

Knowledge – Impurities