Heated water baths?

[ffutures]

My school needs some more thermostatically controlled water baths - temperature range from room temperature to say 80 degrees Celsius, capacity at least 8 litres, capable of maintaining temperature for two or three days without going wildly wrong. They are VERY expensive from laboratory suppliers, e.g. £200 plus, but lab suppliers tend to have inflated prices.

Are there any alternative uses for this sort of thing I'm missing, where there might be cheaper water baths available? About the only thing I've come up with so far is yogurt makers, but they have a fixed temperature. Also aquarium heaters, but the temperature adjustment tends to be a fairly narrow range. Any other suggestions?

Comments

[karohemd.livejournal.com]

Indeed and the capacity is far lower. I recently had a look just for the hell of it and came out wibbling...