Laboratory products
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Moisture content is a critical criterion to determine the acceptability of treated sewage sludge.
Starting with fresh sludge, the moisture content should be around 70%-80%. Dried sludge (cake) needs less than 10% of moisture. The sludge is ashed at 550°C to determine the volatile solid.
Volatile solids are a substance that can easily transform from its solid phase to its vapor phase without going through a liquid phase - domestic waste water volatile solids are about 50% organic. For local sewage stations with only a few samples per day the XM66 would be a perfect alternative to determine the moisture content, continuing to manually ash in a muffle.
In this application note, we determine the moisture content in sewage sludge using Precisa’s prepASH Thermogravimetric Analyser.
ILM Guide 2026/27
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