Concentrator refers to the amount of a substance in a defined space. Concentration is especially used for concentrating or preparing sample in batches in laboratory. - The height of the air chamber plate can be adjusted. The length of a standard gas needle is 150 mm - LED displays immediate temperature and diminis-"C; i Operation is simple and convenient - Built in overheat protection, automatic fault detection an alarm devices - The entire equipment can be put into ventilation cabin concentration sample is in toxic solvents