preparation of nitrogen gas in laboratory

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{"cid":"91212520","title":"Dry Nitrogen Evaporator Concentration Preparation Hormone Analysis","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/71\/af\/af3ccb499b30626dd037b502bce6-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"HUXI","Model Number":"MD200-2","Minimum Order Quantity":"1","Delivery Time":"7-15 days","Certification":"CE","Place of Origin":"China","Payment Terms":"T\/T","Supply Ability":"100","Packaging Details":"Carton","Model":"MD200-2","Temperature range":"RT+5~150\u2103","Time setting":"0-99h59min","Temperature stability@100\u2103":"\u2264\u00b10.5\u2103","Temperature stability@150\u2103":"\u2264\u00b11\u2103","Display accuracy":"0.1\u2103"}}