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Hydro µP sample dispersion unit
Many laboratories, particularly in the pharmaceutical industry, need to measure the particle size of extremely small quantities of sample or need to minimize solvent usage.

Maintaining measurement accuracy with smaller sample quantities requires a higher degree of operational precision than is needed with large volume measurements. Malvern has recognized this with the development of the Hydro µP. This unit provides precise control of pump/stir rate and the timing and intensity of the ultrasonics which may be used to disperse the sample.

  Dispersion Type
Wet, Capacity 18 ml
 
  Dispersion Mechanism
Impeller pump/agitator. High efficiency ultrasonics with timer.
 
  Operation
Automatic control of pump and ultrasonics via SOPs in software.
Manual control via computer control dialogues.
Manual filling and emptying.
Sample discharged into a beaker for ease of recovery.
 
  Typical Applications
Pharmaceuticals, high-value sample materials, toxic materials.
 
  Solvent Compatibility
The circulation path consists of the following materials:
Perlast ® perfluoroelastomer (seals), glass, 316 stainless steel and PTFE/Peek ®
 
   
 

Specification

The Hydro µP provides precise control of pump/stir rate and the timing and intensity of the ultrasonics which may be used to disperse the sample.

Dispersion type:
 Wet.
 
Capacity:   approx 20 ml
 

Dispersion Mechanisms:

   Continuously variable and independent pump and ultrasound.
 

Modes of operation:

 

   Automatic via SOPs.
Manual via computer on-screen operating dialogues.

Weight:

   Cell: 4 kg
Control box / cell holder: 8 kg 
Dimensions:  
 
Cell:   Width: 108 mm.
Height: 242 mm. (excluding motor and handle)
Height: 335 mm. (including motor and handle)
Depth: 252 mm.
 
Control box / cell holder:   Width: 284 mm.
Height: 338 mm.
Depth: 252 mm.
 
Power:

   100-120 V / 200-240 V AC, 48 W.
 
Particle size range:

   Up to 120 microns dependent on particle shape and density.
 

Pump speed:

 

   0 and 500-5000 rpm
 
Accuracy:   500-5000 rpm, +/-5% of F.S.
 
Max dispersant viscosity:

   0.54 Poise (0.054 Pa.s)
 
Safety:   Over-current and Over-temperature protected.
 
Ultrasound Frequency:

   48 kHz (nominal)
 
Power:

   0 - 20 W (dependent upon dispersant)
 
Safety:   Over-current protected.
 

Chemical compatibility

This section lists all materials that come into contact with the sample
and dispersant in the normal operation of the unit.

Cell, pump cavity, drain, well, drain tube:

 316 stainless steel.
 
Internal pipes:

   F.E.P.
Impeller, input syringe tube, non-aqueous dispersant inlet valve:

   PTFE.
 
Drain sump:

   Polypropylene.
 
Windows:

   Glass.
 
Internal seals:

   Perlast™(G70G).
 
Drain and overflow pipes:

   Tygon™(R3603)
 
Non-return valve, well lid:

   PEEK
 
Beaker:

   Pyrex
 

 

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