microscope-light Videos
3 videos found
Sample illumination is transmitted (i.e., illuminated from below and observed from above) white light and contrast in the sample are caused by absorbance of some of the transmitted light in dense areas of the sample. Bright-field microscopy is the simplest of a range of techniques used for illumination of samples in light ...
Jan. 27, 2023
It replaced the existing guidance contained in previous versions of USP 1788 (2011), which covered only the testing requirements for Optical Light Obscuration testing and Microscope testing – carry over from previous USP 788. ...
Apr. 16, 2022
