Labnet's 6 Liter Water Bath is solidly constructed with a stainless steel, seamless chamber that resists corrosion. A stanless gable cover is included to minimize evaporation. The optional non-toxic (non-mercury) thermometer clips onto the gable cover for accurate temperature monitoring. The chamber accomodates plastic tube racks such as the Labnet K564, K565, K566 and S2058-30 (see these in reusable Plasticware, Test tubes and accessories)