Patent ID: 6025919
Filing Date: 2000-02-15
Classification: G01N

Abstract:
A method of measuring the transmittance of light through a wall of a container using a light source and a spectrophotometer having an associated probe comprising the steps of:a. supplying light from said light source directly onto said spectrophotometer probe;b. using said spectrophotometer to generate at least a first light intensity reading in response to said directly supplied light;c. positioning said container so that said spectrophotometer probe is at least partially located within said container and a first portion of said wall of said container is located between said light source and said probe;d. supplying light from said light source indirectly onto said spectrophotometer probe through said first portion;e. using said spectrophotometer to generate at least a second light intensity reading in response to said light supplied indirectly through said first portion; andf. using said at least a first and at least a second light intensity readings to determine a percent transmittance of light through said wall of said container.