The Baksan Large Neutrino Telescope is a liquid scintillation neutrino detector with a target mass of 10 kt, which is proposed to be constructed at the Baksan Neutrino Observatory of the Russian Academy of Sciences at a depth of 4700 m.w.e. In addition to the main full-scale detector, this project includes prototypes with target masses of 0.5, 5 and 100 t. This article evaluates photomultipliers (PMTs) Hamamatsu R7081-100 WA-S70 that are used in the first two phases of the project as the main ones. Also this article evaluates PMTs Hamamatsu R5912-100 WA-S70 used for the muon veto system for the 5-t detector prototype. To evaluate the PMTs, the quantum efficiency, single photoelectron response, timing characteristics, anode dark count rate, linearity and long afterpulses were measured.