- Simultaneous digestion of 12 samples with 16 mm outer Ø. - 1 heating cooling unit. Items supplied: Heating block with cooling system, 12 bores for test tubes 16 mm outer Ø and ventilator, power cable, 2 protective coverings, manual, data cable, software DVD and certificate. - Simultaneous digestion of 12 samples with 16 mm outer Ø. - 1 heating cooling unit. Items supplied: Heating block with cooling system, 12 bores for test tubes 16 mm outer Ø and ventilator, power cable, 2 protective coverings, manual, data cable, software DVD and certificate.