Manufacturer: Eppendorf. Model: 5810 R. The speed can be adjusted from 200 to 14,000 revolutions per minute, with adjustment up to 5,000 rpm possible in steps of 10 and beyond that in steps of 100. There is a timer switch from 1 to 99 minutes, a setting for infinite operation and a minute minder button. The temperature range is between -9 and 40 degrees Celsius. The year of manufacture of this model is 2005. The approximate dimensions are 70 cm wide, 61 cm deep and 34.5 cm high, and the weight is 99 kg. It requires an electrical connection of 230 V at a frequency of 50 to 60 Hz. The fixed angle rotor F45-30-11 can hold up to 30 samples with a maximum of 3.75 g each at up to 14000 rpm. The swing-bucket rotor A-4-62 is designed for a maximum of 4 samples, each weighing up to 1.1 kg, at a maximum of 4000 rpm (built in 2005), while the swing-bucket rotor A-4-81 holds up to 4 samples, each weighing up to 1. 4 kg at a maximum of 4000 rpm (built in 2007) Labprocure is responsible for this device.