Malvern Hydro 2000S AWA2001-SR Dispersion Unit

Malvern Instruments Hydro 2000S (AWA2001-SR) Wet Sample Dispersion Unit

The Malvern Instruments Hydro 2000S (Model/Part Number: AWA2001-SR) is an automated, small-volume wet sample dispersion accessory engineered for direct integration with the Malvern Mastersizer 2000 optical bench. Designed for applications where dispersant consumption must be minimized or sample availability is constrained, the Hydro 2000S delivers stable, reproducible liquid suspensions to the optical measurement flow cell.

Each unit is subjected to bench-level diagnostic power and electro-mechanical testing, verifying the functional integrity of the integrated centrifugal pump, variable-speed stirrer, ultrasonic transducer, level-sensing circuit, and CAN-bus/serial communications link with the main analytical platform.

Technical Details

Key Features

1. Small-Volume Liquid Circuit: Operates efficiently on 50 ml to 120 ml dispersant volumes, reducing solvent consumption and disposal overhead during non-aqueous particle size characterization.
2. Integrated Ultrasonic De-agglomeration: Features a built-in 40 kHz probe with continuously adjustable software-controlled power output to break down agglomerates prior to optical acquisition.
3. Precision Centrifugal Impeller: Continuously variable pump speed (up to 3,500 RPM) maintains suspensions of heavy, dense mineral, metallic, or polymer powders without introducing micro-bubbles or sampling bias.
4. Automated Fill, Clean, and Drain Protocols: Fully compatible with Mastersizer SOP sequencing for automated wash cycles, eliminating sample cross-contamination.

Compatible Core Instruments

• Malvern Mastersizer 2000 (Standard Optical Bench): Full hardware and software handshaking via standard comms bus.
• Malvern Mastersizer 2000E: Direct hardware integration (analyte detection limits adjusted to 0.1 µm – 1,000 µm benchmark).
• Compatible Flow Cell Assemblies: Malvern standard quartz/optical wet flow cells compatible with Mastersizer optical rail.

Part Number Cross-References

• Primary MPN: AWA2001-SR
• Series Reference: AWA2001
• OEM System Code: Hydro 2000S (Small Volume Automated Wet Dispersion Unit)
• Related Spares: MAL101258 (Standard wet cell), MAS5001 (Automated drive module)

Applications

• Lube Oil Wear Debris Monitoring: Quantifying insoluble particulate buildup, soot agglomeration, and ferrous/non-ferrous particulate dispersion in shipboard auxiliary generator and propulsion engine lubricating oils.
• Paints, Coatings & Inks Formulation: Measuring milling performance, pigment grinding limits, and wet dispersion kinetics.
• Industrial Minerals & Mining Slurries: Determining particle size distribution (PSD) in calcium carbonate, quartz, bentonite, and iron ore processing streams.
• Pharmaceutical Suspensions & Emulsions: Batch consistency monitoring of active pharmaceutical ingredients (APIs), micro-emulsions, and crystalline suspensions requiring small organic dispersant volumes.