Why Filter? Six Basic Contaminants in Fluid
Who wants contaminated water? Testing water and fluids for contaminants is important because there are six basic types of material that can make it murky (or simply mysterious). Thermo Scientific Nalgene Analytical Filter Units 1. Suspended Particles Sand, silt, leaves, etc. Measure these with a turbidity meter. Remove them with filters with pore sizes of 1 to 20 microns Colloidal particles (What? These are small particles 0.01 to 1.0 micron so fine they do not settle without prior coagulation). Remove them with anion exchange resin (DI), ultrafiltration, reverse osmosis, and distillation 2. Dissolved Inorganics like silicates, chlorides, fluorides, bicarbonates, sulfates, phosphates, nitrates, and ferrous compounds. Measure these with a conductivity meter. Remove them with deionization and reduce them by reverse osmosis and distillation 3. Dissolved Organics include proteins, alcohols, chloramines, and residues of pesticides, herbicides, and detergent...
