Compatible with virtually any chemistry. Flexible riser, low watt density, bottom heater has Fluoropolymer (PTFE) sleeved 304 stainless elements inert to most solutions and a chemical resistance to aggressive acids! Grounded internal metal element and built-in thermal protector. Resettable P3 J-type thermocouple standard. Single phase. 1000-6000 watts, 120-600 volts.