Standard Test Method for the Automated Determination of Refractive Index of Glass Samples Using the Oil Immersion Method and a Phase Contrast Microscope

Importancia y uso:

4.1 This test method is useful for accurate measurement of from a wide variety of glass samples, whose ranges from 1.48–1.55.

4.2 It should be recognized that measurement of surface fragments, especially from float glass samples, can result in refractive index values which are different than the refractive index values of fragments from the interior of (for example, bulk) the same broken glass source (5).

4.3 The precision of this test method shall be established in each laboratory that employs it as part of the validation protocol (see Section 9).

4.4 It should be recognized that this technique measures the refractive index of the glass at the match point temperature, which will be higher than ambient temperature, and thus, may give different values from those obtained by other methods, which measure the refractive index at room temperature.

Subcomité:

E30.15

Referida por:

C1422_C1422M-20A

Volúmen:

14.02

Número ICS:

81.040.01 (Glass in general)

Palabras clave:

glass comparisons; glass measurement; refractive index;