Coulter LH500 Series Analyzer, || Part number: 178832, 178833, 178834. || LH 500 Series System Instructions for Use, PN 624602 Rev BA. The COULTER LH 500 Analyzer is a quantitative, automated hematology analyzer and leukocyte differential cell counter For In Vitro Diagnostic Use in clinical laboratories. The LH500 Analyzer also provides a semi-automated reticulocyte analysis.