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I.W. Tremont manufactures high quality filtration media specifically utilized by water and wastewater laboratories.
Laboratory Testing - Solids
Water/Wastewater treatment methods utilize glass fiber filters in significant volumes for these test methods:
Determination of Volatile Suspended Solids (Standard Method 2540 E. Fixed & Volatile Solids)
"The residue of TSS, TDS after heating to dryness for a defined amount of time and at a defined temperature is defined as Fixed solids. Volatile solids are those solids lost on ignition (heating to 550º C.) They are useful to the treatment plant operator because they give a rough approximation of the amount of organic matter present in the solid fraction of wastewater, activated sludge and industrial wastes".
Determination of Total Suspended Solids (Standard Method 2540 D. and EPA Method 160.2)
"Suspended solids are those that can be retained on a water filter and are capable of settling out of the water column onto the stream bottom when stream velocities are low. They include silt, clay, plankton, organic wastes, and inorganic precipitates such as those from acid mine drainage."
EPA Standard Method 1311 Toxicity Characteristic Leaching Procedure Method Scope
"The TCLP is designed to determine the mobility of both organic and inorganic analytes present in liquid, solid, and multiphasic wastes."