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Protect against contamination in mixing processes

| By Paul Miller

The CDA-200 multi-shaft mixer (photo) features a two-wing anchor agitator and two medium-speed agitators, each fit with five rows of three-blade pitched turbines. The mixer can be supplied with two portable stainless-steel mixing vessels and transport covers for semi-continuous operation, a 4-gal charging hopper for introducing ingredients to the batch and a thermoprobe for accurate temperature readings. All three agitators are driven independently by explosion-proof, inverter-duty motors. The two-wing anchor includes Teflon scrapers that contact the jacketed sidewall and bottom surfaces. Double FlexiLip seals and silicone O-rings enable vacuum operation up to 29.5 in. Hg for creating air-free pastes, slurries, gels and suspensions. Designed for heavy-duty use, this line of multi-shaft mixers standardizes on precision bearings with large bearing spans, which reduce agitator shaft deflection and vibration. With no bearings and seals in the product zone, the mixers are said to offer better protection against contamination compared to other designs with bottom-entering agitators. — Charles Ross & Son Company, Hauppauge, N.Y.