[0148] Thus, the cooling pins 29 can create a heat exchange between the sample container 18 and well-tempered air in the upper portion of the cultivation chamber 104, while at the same time serves as a guide for the pipette tip 71. The cooling pins 29 can maintain the temperature inside the sample container 18 at an acceptable level, and that is uniformly distributed within the sample container 18. Also, the cooling pins 29 can help to maintain the temperature inside the upper and lower portions of the cultivation chamber 104 at an acceptable level.