Physical & Chemical AnalysisIntermediate 26 min read

Physical & Chemical Analysis: System Optimization

The full physical/chemical parameter list (hardness, TDS, conductance, color, iron/manganese, fluoride), bench vs. online instrumentation, trend analysis, and chain-of-custody basics for a Class B treatment or Class 3 distribution operator optimizing system performance.

At this level, testing stops being just about confirming treatment worked and starts being a tool for optimizing it - catching slow drift before it becomes a violation, choosing the right instrument for the right job, and understanding what happens to a sample after you hand it off to a laboratory. This guide expands the parameter list well beyond the fundamentals and introduces the analytical judgment that separates a technician from a system optimizer.

The Full Parameter List

Hardness

Hardness is caused primarily by dissolved calcium and magnesium and is reported in mg/L as calcium carbonate (

CaCO_{3}

). The standard laboratory approach is an EDTA titrimetric method: EDTA (ethylenediaminetetraacetic acid) binds calcium and magnesium ions, and the volume of standardized EDTA titrant needed to reach a color-change endpoint (using an indicator such as Eriochrome Black T) is pro

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