Wastewater

MLSS and Sludge Blanket Checks: Ask the Right Field Question

Portable MLSS and sludge-blanket readings answer different wastewater questions. Here is how to make both useful during a site round.

Online Colorimetric Analysis: Sample, Chemistry and Optics

A practical PMA explanation of how an online colorimetric analyser turns a representative water sample and controlled reagent reaction into a result.

Iron Monitoring After Ferric Dosing: Specify the Result First

A PMA guide to choosing an iron measurement point and method after ferric dosing, with attention to sample conditioning and like-for-like verification.

Oil-in-Water Testing: Why Lab and Fluorescence Results Differ

PMA explains why gravimetric laboratory results and UV fluorescence trends can differ, and how to compare them using representative samples.

SV30 vs SVI: Reading Settlement and Solids Together

Understand how settled sludge volume and Sludge Volume Index differ, why MLSS matters, and how to keep treatment-works trends comparable.

Phosphate Reagent Kits: What to Check Before You Order

A PMA checklist for matching phosphate reagent kits to the analyser model, method, working range and reporting basis.

Two-Stream Water Monitoring: Compare What Matters

Two sampling points can help explain a water-quality change, provided their methods, timing and sample routes make the comparison meaningful.

Choose the Best Nitrite and Nitrate Sensor For Water Quality

Nitrate and Nitrite Analyser, your questions answered

Aquamonitrix, N2O emissions and achieving NetZero