Device of verifying and reading color, and a process of...

Direct reading digital colorimeter

Direct readout apparatus for measuring light transmitted through

Double beam photometer for measuring fluid samples

Double path microdrop optical biometric system

Dual-wavelength absorption detector adapted for continuous-flow

Fiber optic moisture analysis probe

Flow analysis

Flow analysis

Fluid analysis system and method, for analyzing...

Fluid sample cell

Gas analyzer with means for varying angle of incidence of light

Gas detector

Gas measuring apparatus with standardization means, and method t

In situ chlorophyl absorption meter

Instrument for independently and kinetically measuring light tra

Internal reflectance spectrometer

L/C detector cell assembly

Laser absorption detection enhancing apparatus and method

Light collector and its use for spectroscopic purposes