Environmental chambers for cyclic temperature testing Benchtop BTZ chambers from the Criterion series Temperature range -70ºC to +180ºC The temperature range of the series chambers allows testing in extreme conditions, with temperature change rates up to 5°C per minute. 42-liter model in compact design The chamber interior is 85 mm wider than a traditional benchtop chamber, but the external dimensions are 20% narrower. Its vertical configuration saves space, and the cooling system ventilation allows installation against a wall for maximum space saving.