This Elegra Argon Humidifier is for use with NexION® 1000 and 2000 ICP-MS series instruments. This Elegra Argon Humidifier features a compact and cost-effective design with a non-pressurized water reservoir. No heating or electric power required, and a direct connection to NexION 1000/2000 argon outlet is provided. Features and benefits include: An easy-to-use bypass switch allows you to take the Elegra off-line without disconnecting argon lines. Highly efficient membrane humidification technology. Improved signal stability for samples with high TDS. Simple to use and maintain. Facilitates long, uninterrupted run times. Inert metal-free construction eliminates possibility of contamination. Rugged and durable polymer casing. Maximum and minimum fill marks ensure that you are always operating under optimum conditions.