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P.O. Box 716
Sunapee, NH 03782-0716
603-526-2420 (office), 603-526-2729 (fax)
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Goniometric (spectral)
  GSP-1B
  GCMS-3B
  GSP-2
  GCMS-4

Goniometric (photometric)
  GP-5
  GP-200
  GP-700

Color
  CMS-35SP
  CMS-35FS
  DOT-3C

Gloss and Reflectance
  GM-26PRO
  GM-26PRO/Auto
  GM-3D
  RM-3D
  RM-9
  GMX-102
  GMX-203

Haze and Clarity
  HM-150
  HM-65W
  HM-150L2
  HM-150N
  HR-100
  HSP-150
  TM-1D
  HMS-3

Online Systems
  Glossmeter GR-2
  Glossmeter GR-4
  Color CMTS-5000
  Color CMTS-5000T
  Hazemeter HMS-3
  Transmittance TM-100M


Lumenaire
  NL-500


The Murakami Team
Murakami Products
Avian Technologies LLC
Murakami Corporate


Haze and Clarity Instrumentation

The Murakami product line offers two formats for haze measurement: bench-top systems for traditional laboratory use and online systems for production environments. In addition, a clarity meter is offered for the special case of very low scattering (and therefore low haze) materials.

The major systems can be compared in this table.

Available Systems

  • Online Systems

Technical Overview

Haze is a measure of the degree of scattering in a sample. The instruments are based on an integrating sphere, which captures all light passing through the sample, regardless of the angle at which it exits the sample. The upper diagram shows a highly-scattering material, the lower diagram shows a non-scattering sample. The haze metric is based upon one measurement with the black trap in place and one measurement with the diffuse white in place. By subtraction the amount of scattered light (haze) is quantified. The on-line systems cannot make these multiple measurements, and are based on more complex instrumentation, but the principle is the same, where more off-axis (scattered) light results in a higher haze metric.

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