Owl™ P8-Series System Combs Standard comb 8 0.5mm -Owl P8 Series System Combs Eliminate comb assembly with Thermo Scientific Owl P8 Series System Combs. This assortment of heavy duty, one piece combs is for use with the Owl P8 Series Electrophoresis System. Heavy duty, one piece combs eliminate comb assembly. Description: Standard comb For Use With: Thermo Scientific Owl P8 Series Electrophoresis System Item Description: Standard 8 tooth comb; 0. 5mm thick Teeth Count: 8 Thickness (Metric) Teeth: 0.