tender for pem electrolyzer unit; a the pem electrolyzer unit must contain: pem electrolyzer unit (as shown in figure) pem electrolyzer unit with end plates as galvanized steel, platinum and iridium catalyst, flow plates with serpentine flow path, silicon sealing, teflon insulator, gdl membrane with catalyst, 5 stackable cells can be stacked in 1,2,3,4 or 5 numbers based on output flow requirement with following specifications for each cell: mea size - 25cm2 cell voltage - 1.9-2.5 v cell current - 30 a end plate size - 85*75*8 hydrogen production - 140 ml/min max. pressure - 5 bars water intake flow rate - 0.12 ml/min operating temperature - 40 to 60 deg. c water requirement – purified water with conductivity <1μs/cm (recommended) water manifold – for cell stacking along with mica heater and a temperature controller water tank: 10l polypropylene tank for storing distilled water with water heater water distiller: water distiller with purified water output: 1l/hr along with a handheld water conductivity meter water pump: rotary peristaltic pump water pressure – 1 bar max. flow rate – 50ml/hr variable dc power supply for electrolyzer: voltage range: 0-10 v max. current: 50 amp. gas water separator: gas water separator for hydrogen; 5bar gas water separator for oxygen; 5bar gas drying unit: desiccant based three stages drying for hydrogen desiccant based three stages drying for hydrogen gas collection unit: gas collection unit consist of: pressure guage with pressure controller for hydrogen; 0-5 bar pressure guage with pressure controller for oxygen; 0-5 bar non-returning valve for hydrogen;0-5 bar non-returning valve for oxygen;0-5 bar mass flow controller with pc communication for hydrogen; 0-8lph mass flow controller with pc communication for oxygen; 0-8lph three way manifold for hydrogen with double stage pressure gauge three way manifold for oxygen with double stage pressure gauge hydrogen cylinder; type 1 – 10l water capacity oxygen cylinder; type 1 – 10l water capacity safety unit: safety unit consists of 2 hydrogen leak detectors with alarm placed over manifold and cylinder with solenoid valves placed after electrolyzer. relays for automatic shutdown operation safety actions: auto shutdown of equipment, loud alarm, and gas shutoff at critical points. warranty period: the product/system is covered under warranty for a period of 36 months from the date of successful installation and commissioning.