Madhu is working as Lab technician in Blood bank. She is responsible in collecting blood from donor and maintenance of all instruments of Blood bank. The basic equipment for blood collection are used as Blood donor couches, Blood collection monitor, Blood bags and Tube sealer. She is basically using the equipment for blood component preparation are Electronic weighing machine, Refrigerated centrifuge, Plasma expressor and Cell separator. As a part of hospital when she has to supply the blood bags for the recipients then she is responsible to test the blood and the basic instruments that are used as ABO grouping and Infectious disease testing. For maintaining the activity of blood bank in proper way she has to handle autoclave, incubator, microscope, hot air oven, laminar flow cabinet also.As Madhu is working in Blood bank, the machine is used for quick thawing of Plasma at + 4 0 C / + 370 C and improves yields over conventional air thawing methods. This is fabricated out of sheet with a stainless-steel inner chamber. Refrigeration is achieved by means of hermetically sealed compressor. The temperature is controlled by a digital indicator cum controller. Identify the machine with which Madhu is working.a) Cryoprecipitate bath b) Ultra-low freezer c) Blood storage cabinet d) Plasma storage cabinet