Features: Stirrers IS 6 and IS 12 have been specially developed for BOD measurement with the OxiTop® system. Software-controlled speed regulation prevents the magnetic stirrer bar from getting caught or wobbling. The speed is selected so that an optimal gas exchange with the sample takes place. The stirrer is maintenance-free and non-wearing as it contains no moving parts. Specifications: • No. of stirring positions: 12. • Stirrer speed: Program-controlled, 180 ... 450 min-1. • Ambient temperature: - Storage: -25 °C ... +65 °C. - Operation: +5 °C ... +40 °C. • Dimensions: 67 x 266 x 350 mm. • Power supply: Universal power supply 100-240V/50/60Hz.