- en Change Region
- Global Site
Polarized light microscopes can measure the properties of asbestos, such as refractive indices, birefringence, retardation, extinction angles, pleochroism and signs of elongation, helping in the identification of asbestos. LV100ND POL/DS is a high-performance, polarized light microscope with accessories that enable dispersion staining observation at up to 400x magnification.
The cross Nicols, diagonal position
The cross Nicols, extinction position
The parallel Nicols, cleavage face aligned with the crosshair
The cross Nicols, extinction angle measured
Amosite Positive: Subtractive diagonal position
Crocidolite Negative: Additive diagonal position
The upper part of a specimen is focused
The lower part of a specimen is focused
Diagonal position
Subtractive diagonal position confirmed (a test plate is inserted)
Analyzer rotation angle measured (Senarmont compensator is inserted)
Parallel to vibration direction of polarizer
Orthogonal to vibration direction of polarizer
Chrysotile
nD = 1.550, red-violet to blue
Amosite
nD = 1.680, pink
Crocidolite
nD = 1.680, orange to red ocher