Full Job Description

Tends heated kettle and filter press in which lye is treated with chemicals to remove undesirable properties in glycerine purification process: Starts pump to transfer premeasured lye into kettle, starts agitator to mix batch, and turns steam valve to heat kettle to prescribed temperature. Dumps specified amounts of dry chemicals or pumps liquid chemicals into kettle to attain product of specified concentration. Inspects batch sample for clarity and submits sample laboratory for testing. Regulates chemical concentration of batch, following laboratory report. Pumps batch through filter press to remove materials precipitated during treatment. Cleans filter press and replaces filter cloths, using handtools. Records kettle temperature, agitation and treating time, and amount of chemicals used in process.

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