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Standards

Reference surfaces for reflectance and transmission in the solar wavelengths are available

from (among others) Labsphere in the USA, the National Institute of Standards and

Testing (NIST) in the USA, and from the National Physics Laboratory (NPL) in the UK.

Labsphere provide reference surfaces with reflectances varying from 2%R to 99%R.

Labsphere may be contacted at:

P.O. Box 70

Shaker St,

North Sutton, N.H. 03260

Tel: 603 927 4266

Fax: 603 927 4694

NIST provide a range of transmission filters and solutions, and also provide the following

materials for reflectance:

• First surface, Aluminium on glass

• First surface, Gold on glass

• Second surface, Aluminium on fused quartz

• Second surface, Aluminium on fused quartz, with wedge.

For more information:

Office of Standard Reference Materials

Room 205, Building 202

National Institute of Standards and Technology

Gaithersburg, MD 20899

Reference Materials available from NPL for reflectance include:

• Russian opal

• White ceramic tile

• Black ceramic tile

• Colored tiles

• Aluminium mirrors

• Absorbing glass.

NPL also have transmission standards of neutral glass filters with transmission values of

0.92 to 0.001.

Contact:

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Mantis 5000 Especificaciones Pagina 85