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Hard Scale(Scale)

- Forms in steam boiler

-Has the appearance of a white and brown concentration

-smooth texture

Soft Scale(Sludge)

-Forms in the hot water heaters

-Appears as a thick ,brown or black sludge

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More answers

Sludge is a semi-solid residue formed by the accumulation of suspended solids in water, while scale is a hard deposit formed by the precipitation of minerals from water. Sludge usually forms in liquid form, while scale forms as a solid on surfaces like pipes or heating elements. Both can cause blockages and reduce the efficiency of systems like boilers or pipelines.

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10mo ago
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Q: What is the difference between sludge and scale?
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