In Vivo Scientific incubators are designed and empirically tested to reduce or eliminate these flaws found in other incubators. Instead of relying on passive diffusion of air to warm the incubator/sample, our incubators employ a unique diffusion grid design in combination with both an air input and an air return (
middle right panel). This design results in
predictable, uniform airflow throughout the chamber, eliminating cool or hot spots within the incubator itself, and vastly improving temperature stability at the sample being imaged. Maintenence of the desired temperature setpoint is achieved through the use of a precision, shielded temperature probe coupled to a peripheral heating unit. Because the heater unit can be placed away from the incubator itself,
elimination of electrical and vibrational interference from the heater itself can be achieved. Accuracy +/- 0.1 deg. C can routinely be maintained at the sample itself, and 0.2 deg. C. across the microscope stage (allowing for
uniform heating of multiwell dishes). These tight tolerances result in
minimal focal drift once sample/incubator equilibrium has been achieved. Furthermore, because of the airflow pattern and temperature uniformity, the incubator temperature rapidly re-adjusts following the opening of incubator doors (e.g. during sample changing/manipulation or microscope hardware manipulation).