An easy, efficient, reliable, and low-cost method of constructing a cooling system using a simple circulating pump is described. The system is employed in conjunction with an inert atmosphere glove box to achieve the synthesis of air- and moisture-sensitive compounds inside the glove box at controlled, low temperatures without contaminating the glovebox purification system. The system can also be used in an inert atmosphere glovebag. (Contains 2 figures and 3 notes.)