NV A-10B Residential Spas Practice Questions - Nevada A-10B Residential Spas Contractor Examination Exam

Which filter type uses a cake of fossilized diatomaceous earth on septa or grids to trap fine particles?

High-rate sand filter Cartridge filter Diatomaceous earth (DE) filter Rapid-rate gravity sand filter

Correct Answer:

Diatomaceous earth (DE) filter

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