Overlap coverage

Many of the following texts have an overlapping coverage of subject matter. The reader should therefore select from among them. The brief notes attached will guide that choice. 

The on-line filter on the wash headers manifold should be checked periodically for pressure build- up due to progressive blockage. Likewise, the nozzles on the wash headers should be kept clean in order to ensure overlapping for full coverage of the washed cake. 

The fraction of slide surface to be covered by collected droplets is an important factor influencing overall measurement accuracy and time. If the slide is covered by too many droplets, the measurement error and time will increase due to droplet overlap and tedious counting. If too few droplets are collected, the sample may not be large enough to generate statistically representative data. For the measurement accuracy and ease, a coverage of 0.2% has been found to be sufficient and satisfactory with an upper limit of 1.0%. 1 ... 

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