press nit no.43, item no.02 (2022-23)cwa (w and s)-i purchase of visi cooler for cwa(w and s)-i division , machine shall be made and design to store water and waste water samples temperature range will be +2°c to +8°c with storage volume of 400 lit or more the refrigeration system shall be by forced air circulation defrost method should be automatic refrigerant should be cfc free uniformity should be +/-1.5°c machine should have color touch screen panel for control and operation. machine shall be microprocessor controlled operate /open through rfid card or by password with touch screen display. includes usb port for data retrieval. high / low alarms door ajar alarm, condenser temperature alarm should be present all activities taken place in the machine or opening or closing of door shall be recorded through software that can also downloadable via usb machine shall have min-max feature enabling users to view the minimum and maximum-recorded temperatures on the home screen. this makes it easier to document. refrigerator shall have minimum 20 hour display and alarm battery back-up for touch screen (rechargeable 12v, lead acid battery) there will be glass door for easy visibility of stored items minimum of 40mm-50mm non-cfc foamed insulation machine shall have rust proof anti scratch powder coating machine shall have rfid card lock system machine shall have storage capacity for 4 to 5 ss 304 shelves /drawer machine shall have four castor wheel with front wheels with lock manufacturer should be ce /iso/iec 61010 certified machine shall have 3 year warranty make/brands: cole parmer, antylia, thermo scientific, impact. thermic