Vertical colloid mill for emulsifying and homogenizing
Optimize your production line with precise particle size reduction and mixing, ensuring unmatched consistency in emulsions and suspensions for high-quality end products.

Processes and Homogenizes Liquids and Slurries
The Colloid Mill Type O from Probst & Class is designed for versatile processing in a wide range of industries, including pharmaceuticals, food and beverage, and cosmetics. Operating with a vertical, enclosed motor, this mill utilizes hydraulic and mechanical forces within an adjustable stator-rotor gap, ensuring precise homogenization of liquids, slurries, and pastes. Capable of processing up to 34,000 liters per hour, it excels in de-agglomeration, emulsification, and micro-comminution tasks.
The Type O mill adapts seamlessly into batch and in-line operations, supported by optional features like heated/cooled housing and ATEX certification for explosive environments. Constructed with stainless steel options meeting GMP and FDA standards, it accommodates stringent pharmaceutical and food production requirements. Additionally, the unit is designed for easy cleaning and maintenance, available with various mechanical seals and custom engineering support to meet specific process needs. Automation options include frequency converters and integration into existing production lines via advanced control systems.
Benefits
- Enhances production efficiency by handling up to 34,000 liters per hour.
- Reduces energy consumption with adjustable motor configuration tailored to process needs.
- Meets stringent GMP and FDA standards, ensuring product safety and compliance.
- Flexible application with adjustable stator-rotor gap for precise emulsification and mixing.
- Lowers maintenance time with easily replaceable seals and cleaning-in-place options.
- Applications
- Skincare and cosmetics,Sauces,Inks,Polishing agents,Coating compounds,Petrochemical products,Food and beverages,Pesticides,Adhesives,Emulsions,Pigments,Herbicides,Baby food,Fungicides,Plant-based milk,Dairy products,Chemical goods,Pharmaceuticals
- End products
- Baby puree,Furniture polish,Peanut butter,Mancozeb fungicide,Glyphosate herbicide,Mascara,Polyurethane coating,Almond milk,Acrylic emulsion,Pva adhesive,Lip balm,Shower gel,Natural rubber adhesive,Eye ointment,Offset printing ink,Fruit juice concentrate,Bitumen-emulsion,Burn cream,Mayonnaise,Titanium dioxide pigment
- Steps before
- Purification,Pre-comminution,Mixing
- Steps after
- De-aeration,Sterilization,Packing
- Input ingredients
- raw materials,aggregates,agglomerates,chemical compounds,natural rubber,cosmetic ingredients,food ingredients,petrochemical materials,pharmaceutical ingredients
- Output ingredients
- fine particles,emulsions,suspensions,creams,shower gels,sunscreen products,fruit and vegetable juices,nut pastes,eye ointments,coating compounds
- Market info
- Probst und Class is known for manufacturing high-performance industrial homogenizers and wet milling equipment, offering customized solutions for dispersing, emulsifying, and grinding applications, with a strong reputation for quality and innovation in the process industry.
- Flow-rate
- 150–34,000 l/h
- Operation mode
- In-line and batch
- Size availability
- Seven standard sizes
- Motor type
- Enclosed motor
- Position
- Vertical
- Sealing options
- Single and double-acting mechanical seals,lip seals (PTFE)
- Milling adjustment
- Infinitely adjustable stator-rotor
- Explosionproof version
- ATEX version available
- Motor standard
- IE3 standard motors
- Additional features
- Optional milling gears,recirculation system,heated/cooled housing
- Capacity adjustment
- Depending on machinery configuration and product viscosity
- Working mechanism
- Hydraulic and mechanical cutting,impact,squeezing,friction and shear forces
- Integrated steps
- Grinding and mixing
- Batch vs. in-line operation
- Both batch and inline
- Adjustability
- Infinitely adjustable stator position
- Feed method
- Via hopper or piping flanged directly to the mill
- Seal options
- Single and double-acting mechanical seals,lip seals
- Motor Position
- Enclosed motor,vertical position
- Density/particle size
- 0.5–2.5 g/cm³ / 50–1000 µm
- Feed/Discharge method
- Via piping flanged directly to the mill
- Vertical Position Operation
- Yes
- Enclosed Motor
- Yes
- Size Options
- Seven sizes available
- Optional milling gears
- Available
- Material options
- Various
- Recirculation system
- For material recirculation
- Heated/Cooled housing
- Available
- Pharmaceutical version
- Available
- ATEX (explosionproof) version
- Available
- Sterilization design
- Available
- Feed and discharge pump
- Available
- Feeder screw with controlled gearbox
- Available
- Skid/mobile version
- Available
- Frequency converter
- Available
- IE3 standard motors
- For various voltages and frequencies