These Reciprocating Water Bath Shakers Are Available In .three Models Model WBT-200 Small Platform 250x300mm, Model WBT-400 Large Platform 300x400mm & Model .WBT-401 Refrigerated To 0°C ,Temperature Control Is Precise Temp. Range Of 5°C Above Ambient To 100°C, Speed Range 20 - 200 Rpm, Heat Loss And Evaporation Minimized With Use Of Stainless Steel Hood .cover Easy Emptying Through A Drain .at The Lowest Point Micro Processor Temperature PID Controller With Dual Display Of Measured Temperature And Set .temperature