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The Hydro Sight™ is a revolutionary accessory for the Mastersizer range of instruments providing rapid visualization and assessment of your liquid particle dispersion during a measurement.


Real-time observation of the particles in the laser diffraction measurement flow allows improved understanding of how stirring and sonication or the addition of surfactants and stabilizers affect your dispersion. One-click capture of dispersion images/videos and dispersion metrics provides quick and effective supporting evidence for troubleshooting measurements and validation of methods according to ISO 13320:2009, USP<429> and similar standards.

  • Visualize your particles
  • Observe and understand dispersion trends
  • Automatically detect unusual particles
  • Evaluate particle size and shape
  • Quickly validate methods

How it works

The Hydro Sight is designed to be used with the Mastersizer instrument range with a recirculating liquid dispersion accessory, such as the Hydro MV, Hydro LV, Hydro EV or Hydro SM accessories provided with the Mastersizer 3000.

Connect the accessory

The Hydro Sight is easily installed by connecting it in-line between the laser diffraction dispersion accessory and  measurement cell. It captures images of the sample dispersion flowing through a specially designed imaging cell using lens-less* dynamic imaging technology. No focusing or calibration by the user is required during routine operation.

Observe and analyze

A stand-alone software package provides image capture and data analysis options with a simple user friendly interface. Image frames are continuously displayed and analyzed during a laser diffraction measurement, with options to save images and follow specific events.  Particle size and particle elongation distributions are updated continuously and a Dispersion Index* trend plot constantly monitors the state of dispersion. Image frames displaying anomalous particles can be automatically captured, assisting with trouble-shooting.

Quickly validate methods

A validated particle sizing method provides security and reassurance that your measurements are robust, repeatable and meaningful. To help you achieve this the Hydro Sight provides rapid, simultaneous visual evidence and supporting data to allow you to arrive at the optimum method in the shortest amount of time. It represents a valuable investment for anybody who regularly needs to develop and validate new methods.

Easy maintenance and cleaning

The Hydro Sight is chemically compatible with a wide range of aqueous and non-aqueous dispersants, and is designed for minimal maintenance under normal operation. The imaging flow cell takes advantage of the clean cycle during your laser diffraction measurements and should not require any extra intervention during routine operation. The cell can be easily accessed  for cleaning if contamination is observed on the cell windows.




Measurement system

Analysis method:
Lens-less dynamic image analysis
CMOS sensor
White light
Data acquisition rate:
3.75 fps
Pixel size:
1.4µm x 1.4µm
Typical measurement time:
as per Laser Diffraction
Materials in contact with the dispersant, additives and sample:

316 stainless steel
BK7 glass
Perlast FFKM

Sample measurement capabilities

Measurement range:
9 - 1000 µm *
Observable Size range:

1.4 - 1000 µm *

(cell width 1500 µm)

System Compliance

Regulatory testing:
Designed to meet RoHS/REACH and WEEE requirements
CE: complies with EMC directive 2004/108/EC {BS EN 61326-1: 2006} and Low Voltage Directive 2006/95/EC {BS EN 61010-1: 2010}
FCC:  CFR 47 Part 15:October 2010 compliant (Class A digital device)
ICES-003 compliant (Class A digital apparatus)
VCCI compliant. 
Designed to meet C-Tick requirements.

General Specifications

200mm x 160mm x 218mm (LxWxH)
100-240V ac 50/60Hz <1A
Supply Voltage:
100-240V, 50-60Hz
Power consumption:
Product storage temperature:
-40°C to +50°C
Operating range:
+10°C to +35°C
80% maximum for temperatures up to 31°C, decreasing linearly to 50% at 40°C.
Non condensing
Ingress Protection (IP) rating:
Designed to meet IP31


* Sample and dispersant dependent

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The importance of powder quality in powder bed Additive Manufacturing processes Webinar - Live (English)

Manufacturing of complex metal parts by additive manufacturing is becoming more widespread as it offers greater design flexibility and reduced waste compared with traditional manufacturing processes. For powder based processes the quality of the raw ...

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Food Safety and Quality: Sizing Up Particles Article (English)

Particle size analysis is important in many industries. Knowledge of particle size is important in the food industry because it affects the production and handling of ingredients and the formulation, processing, and quality control of food and bevera...

Manufacturing and characterizing spray dried products: Part 2 – Measuring powder characteristics Webinar - Recorded (English)

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Date recorded:
July 14 2016

Five ways that the Mastersizer 3000 saves you money Whitepaper (English)

To earn its place in today’s busy analytical laboratories, an instrument must meet certain practical criteria, and stand-up to rigorous economic evaluation. For labs that need particle sizing, laser diffraction systems are typically the technology of...

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The mechanical properties of materials such as concrete, metal powders, and ceramics are governed by how well we can pack the different sizes and shapes of particles together. There are a whole bunch of properties that influence particle packing beha...

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