Product Description

MRC Impeller No. 25

is a compact 30 mm (1.18 in.) four-blade cupped propeller designed for blending, homogenizing, dissolving, and suspension maintenance in small volumes of low-to-moderate-viscosity liquids. Its broad, curved blades produce axial-dominant circulation with secondary radial and tangential flow for efficient top-to-bottom turnover in laboratory vessels.

Applications

Small-Volume Liquid Blending

Designed for mixing reagents, solutions, formulation samples, and other compatible liquids in small laboratory vessels where a larger propeller would be oversized.

Dissolving Soluble Ingredients

The expected axial circulation helps move liquid through the vessel and can support dissolution of compatible soluble powders, salts, and formulation components.

Homogenizing and Temperature Equalization

Supports top-to-bottom turnover for reducing concentration and temperature differences throughout small liquid batches.

Suspension Maintenance

Can help maintain fine, compatible solids in suspension during routine laboratory mixing when suitable speed, vessel geometry, and immersion depth are used.

Laboratory Formulation Development

Suitable for bench-scale screening, sample preparation, analytical workflows, and development of chemical, cosmetic, pharmaceutical, and biological formulations.

Features

• Compact 30 mm (1.18 in.) nominal diameter for small vessels and batch volumes.
• Four evenly spaced blades support balanced rotation.
• Broad, curved, cupped blade surfaces provide active engagement with the liquid.
• Promotes top-to-bottom turnover more effectively than a flat radial paddle of similar size.
• Suitable for low-to-moderate-viscosity liquids.
• Compact geometry allows use in vessels with limited internal space.
• Rounded blade profile avoids the toothed geometry associated with high-shear dissolver discs.

Specifications

FAQs

What type of impeller is the MRC Impeller No. 25?

It is a compact 30 mm (1.18 in.) four-blade propeller with broad, curved, cupped blades.

What is an axial-dominant flow pattern?

Axial-dominant flow moves most of the liquid parallel to the stirring shaft, promoting top-to-bottom circulation and return flow along the vessel wall.

What do the curved, cupped blades do?

The curved surfaces capture and redirect liquid more strongly than a simple flat paddle, producing active circulation from a compact diameter.

Can it form a vortex?

Yes. Vortexing and air entrainment may occur in low-viscosity liquids if the impeller is operated too quickly, positioned too close to the surface, or used in an unbaffled vessel.

Warranty

The MRC Impeller No. 25 is warranted against defects in materials and workmanship under normal use and service. For warranty assistance, replacement parts, product support, or application guidance, contact LabGear USA technical support. Warranty valid for 12 months.

Ordering

Have additional questions? Contact LabGear USA at (650) 254-8333 or sales@labgearusa.com