Sturdy construction, stackable. Test tube racks are made of filled PP (density 1.2 g / cm³), will not float in waterbath. - Alphanumerical positions to clear sample identification. - Wide spaces between the positions. Operating temperature: - 20 to + 90 °C. - Autoclavable at 121 °C (2 bar), acc. to DIN EN 285. - Racks are supplied in three pieces for convenient and permanent assembly. Sturdy construction, stackable. Test tube racks are made of filled PP (density 1.2 g / cm³), will not float in waterbath. - Alphanumerical positions to clear sample identification. - Wide spaces between the positions. Operating temperature: - 20 to + 90 °C. - Autoclavable at 121 °C (2 bar), acc. to DIN EN 285. - Racks are supplied in three pieces for convenient and permanent assembly.