| Parameter | Type I (Gravity) | Type II (Forced) | | :--- | :--- | :--- | | (variation at set point over time) | ±1.0°C | ±1.0°C | | Temperature Uniformity (spatial variation within working chamber) | ±3.0°C at 100°C ±5.0°C at 200°C | ±1.5°C at 100°C ±2.5°C at 200°C |

This evaluates the spatial temperature variance across the empty chamber. It requires that the temperature differential between any two points inside the working zone never exceeds the tight thresholds dictated by the oven's Type category. Potential alternate smoldering ignition sources - GovInfo

Utilizes mechanical blowers or motorized fans to drive air circulation dynamically across the chamber.

The standard categorizes ovens based on their performance capabilities. Understanding these classes is vital when purchasing or validating equipment.

Optimized to operate from 20°C above ambient room temperature up to 200°C .