When selecting a 100kg powder mixer, you must prioritize the effective mixing volume versus the total volume; typically, a 100kg capacity requires a total volume of 150-200 liters depending on material density. Ensure the motor power is at least 2.2kW to 4kW to handle heavy-duty cycles. Look for SUS304 or SUS316L stainless steel construction to prevent corrosion and ensure product purity. Additionally, verify the mixing time efficiency, which should ideally range between 6 to 15 minutes per batch for standard dry powders.