Extension set for respirometric aerobic OxiTop®-IDS measurement systems (also for BOD self check measurements), stirring platform IS 12 for 12 measuring units, universal power supply 100 to 240 VAC, 50/60 Hz; accessories: including 12 sample bottles, 12 OxiTop®-IDS measuring heads, 12 rubber sleeves and 12 magnetic stirrer bars. Without NTH 600, NHP 600 and overflow measuring flasks.