Hi Guys, Thanks for looking at the post firstly. I'm in the process of creating a chamber roughly around 30mm x 50mm x 70mm (W, L, H). The chamber will be used below the typical refrigeration temperature (-18°) of around -50°C. Please could you offer some advice where to start with this. 1. How can the cooling be achieved? 2. Any suitable pressure tight/ insulating chambers (e.g fridge)..what do you recommend? I have looked at CPU cooling using liquid nitrogen, but temperatures are well below what I need it to be, and also, the sizes are quite limited..