TB30 bath with temperature range from ambient to 80°C, 230V-50Hz~60Hz, temperature stability ± 0.02°C. Bath is conform ASTM D1838, EN/ISO 6251, IP411, BS2000 Part 411, BS6924, NF M41-007 and is specifically designed to hold a temperature stable at 37.8°C without the use of an external circulator. The bath is deep enough to accommodate four corrosion test cylinders in an upright position.