Standard for near-infrared reflectance measurement and method of

Details Standard for near-infrared reflectance measurement and method of Standard for near-infrared reflectance measurement and method of

1986-09-16

1988-08-02

Fields, Carolyn E.

Radiant energy

Calibration or standardization methods

356243, G01N 2101

Patent

active

047615524

ABSTRACT:
A fixed stable standard for near-infrared reflectance measurement is provided by using a sample holder having an IR-quartz window and a measured amount of PTFE powder pressed directly thereagainst so that the PTFE powder has a fixed density providing a permanent reflectance standard protected by the window, and a method of making the standard is also provided.

REFERENCES:
patent: 3764364 (1973-10-01), Seiner
patent: 3956201 (1976-05-01), Seiner
patent: 4047032 (1977-09-01), Judge et al.
patent: 4095105 (1978-06-01), Rosenthal
patent: 4647198 (1987-03-01), Sommer
Weidner, V. R. and J. J. Hsia, "Reflection Properties of Pressed Polytetrafluoroethylene Powder," J. Opt. Soc. Am./vol. 71, No. 7/Jul. 1987.

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