It is constructed in compliance with IEC, IS 9000. eep Freezers / Ultra Deep Freezers is intended for performing different type of test where the temperature of sample environment must be controlled within certain limits. Facebook : https://www.facebook.com/IsotechTechnology YT Sub Link: https://bit.ly/isotech-YT-channel Linkedin : https://in.linkedin.com/company/isotech-technology Read More : https://www.isotechpl.com/de-humidifier