液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)氮(dan)(dan)(dan)(dan)(dan)(dan)(dan)(dan)是(shi)低溫(wen)制(zhi)品，在(zai)使(shi)用(yong)(yong)(yong)過程中要(yao)(yao)(yao)(yao)(yao)防(fang)止(zhi)(zhi)(zhi)凍傷(shang)(shang)。液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)氮(dan)(dan)(dan)(dan)(dan)(dan)(dan)(dan)罐(guan)(guan)在(zai)充(chong)填(tian)液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)氮(dan)(dan)(dan)(dan)(dan)(dan)(dan)(dan)之前(qian)，首先(xian)要(yao)(yao)(yao)(yao)(yao)檢查外殼(ke)有(you)(you)無凹陷，真(zhen)空排(pai)氣(qi)口(kou)是(shi)否完好(hao)。若被碰(peng)壞，真(zhen)空度(du)則(ze)會(hui)降低，嚴重時(shi)進(jin)(jin)(jin)氣(qi)不(bu)(bu)(bu)能保溫(wen)，這樣罐(guan)(guan)上(shang)(shang)(shang)部會(hui)結霜(shuang)，液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)氮(dan)(dan)(dan)(dan)(dan)(dan)(dan)(dan)損(sun)耗大，失去繼續使(shi)用(yong)(yong)(yong)的(de)(de)(de)(de)價值。檢查罐(guan)(guan)的(de)(de)(de)(de)內(nei)(nei)部，若有(you)(you)異物(wu)，必(bi)須取出(chu)，以(yi)防(fang)內(nei)(nei)膽(dan)被腐(fu)蝕。從(cong)進(jin)(jin)(jin)/排(pai)液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)閥(fa)(fa)進(jin)(jin)(jin)液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)，向(xiang)(xiang)液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)氮(dan)(dan)(dan)(dan)(dan)(dan)(dan)(dan)罐(guan)(guan)內(nei)(nei)充(chong)液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)時(shi)，請先(xian)開啟放(fang)空閥(fa)(fa)，將(jiang)輸(shu)液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)的(de)(de)(de)(de)金(jin)屬(shu)軟(ruan)管(guan)(guan)(guan)接在(zai)進(jin)(jin)(jin)/排(pai)液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)閥(fa)(fa)上(shang)(shang)(shang)，打(da)開進(jin)(jin)(jin)/排(pai)液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)閥(fa)(fa)，即可以(yi)從(cong)進(jin)(jin)(jin)/排(pai)液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)閥(fa)(fa)加入(ru)(ru)液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)體介(jie)質，充(chong)液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)完畢后，關閉進(jin)(jin)(jin)/排(pai)液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)閥(fa)(fa)。充(chong)填(tian)液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)氮(dan)(dan)(dan)(dan)(dan)(dan)(dan)(dan)時(shi)不(bu)(bu)(bu)要(yao)(yao)(yao)(yao)(yao)將(jiang)液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)氮(dan)(dan)(dan)(dan)(dan)(dan)(dan)(dan)倒在(zai)真(zhen)空排(pai)氣(qi)口(kou)上(shang)(shang)(shang)，以(yi)免(mian)造成真(zhen)空度(du)下降。蓋塞是(shi)用(yong)(yong)(yong)絕熱材料制(zhi)造的(de)(de)(de)(de)，既能防(fang)止(zhi)(zhi)(zhi)液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)氮(dan)(dan)(dan)(dan)(dan)(dan)(dan)(dan)蒸發(fa)，也能起到固定提(ti)筒(tong)的(de)(de)(de)(de)作用(yong)(yong)(yong)，所以(yi)開關時(shi)要(yao)(yao)(yao)(yao)(yao)盡(jin)量(liang)減少磨損(sun)，以(yi)延(yan)長使(shi)用(yong)(yong)(yong)壽命。液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)氮(dan)(dan)(dan)(dan)(dan)(dan)(dan)(dan)液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)面(mian)以(yi)不(bu)(bu)(bu)低于冷(leng)藏物(wu)品為宜。檢查液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)氮(dan)(dan)(dan)(dan)(dan)(dan)(dan)(dan)貯存量(liang)時(shi)，可使(shi)用(yong)(yong)(yong)稱(cheng)重法或手電(dian)筒(tong)照射(she)法，亦可用(yong)(yong)(yong)細(xi)木、竹竿插入(ru)(ru)液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)氮(dan)(dan)(dan)(dan)(dan)(dan)(dan)(dan)罐(guan)(guan)中視(shi)其(qi)結霜(shuang)高度(du)(等于液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)面(mian)高度(du))的(de)(de)(de)(de)方(fang)法。但切(qie)勿用(yong)(yong)(yong)空心管(guan)(guan)(guan)插入(ru)(ru)，以(yi)免(mian)液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)氮(dan)(dan)(dan)(dan)(dan)(dan)(dan)(dan)從(cong)管(guan)(guan)(guan)內(nei)(nei)沖出(chu)飛濺傷(shang)(shang)人。初次充(chong)填(tian)液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)氮(dan)(dan)(dan)(dan)(dan)(dan)(dan)(dan)時(shi)或者液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)氮(dan)(dan)(dan)(dan)(dan)(dan)(dan)(dan)罐(guan)(guan)內(nei)(nei)部處于干燥(zao)狀態(tai)時(shi)，要(yao)(yao)(yao)(yao)(yao)先(xian)進(jin)(jin)(jin)行(xing)(xing)(xing)(xing)檢查，看罐(guan)(guan)表面(mian)有(you)(you)沒有(you)(you)凹陷或其(qi)他狀況，看罐(guan)(guan)內(nei)(nei)有(you)(you)無異物(wu)，檢查這些(xie)情況良好(hao)則(ze)可充(chong)液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)氮(dan)(dan)(dan)(dan)(dan)(dan)(dan)(dan)，并要(yao)(yao)(yao)(yao)(yao)在(zai)通風良好(hao)的(de)(de)(de)(de)地方(fang)進(jin)(jin)(jin)行(xing)(xing)(xing)(xing)，在(zai)室外進(jin)(jin)(jin)行(xing)(xing)(xing)(xing)**。如必(bi)須在(zai)室內(nei)(nei)進(jin)(jin)(jin)行(xing)(xing)(xing)(xing)，必(bi)須打(da)開門窗以(yi)保持良好(hao)的(de)(de)(de)(de)通風狀態(tai)。液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)氮(dan)(dan)(dan)(dan)(dan)(dan)(dan)(dan)罐(guan)(guan)只能用(yong)(yong)(yong)于盛(sheng)(sheng)裝液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)氮(dan)(dan)(dan)(dan)(dan)(dan)(dan)(dan)，不(bu)(bu)(bu)可盛(sheng)(sheng)裝其(qi)他冷(leng)凍劑.液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)氮(dan)(dan)(dan)(dan)(dan)(dan)(dan)(dan)的(de)(de)(de)(de)充(chong)填(tian)一種是(shi)加壓注(zhu)入(ru)(ru)法，是(shi)從(cong)大的(de)(de)(de)(de)液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)氮(dan)(dan)(dan)(dan)(dan)(dan)(dan)(dan)容(rong)(rong)器打(da)開液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)閥(fa)(fa)接上(shang)(shang)(shang) 撓性軟(ruan)管(guan)(guan)(guan)，直(zhi)接對(dui)液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)氮(dan)(dan)(dan)(dan)(dan)(dan)(dan)(dan)罐(guan)(guan)充(chong)填(tian)液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)氮(dan)(dan)(dan)(dan)(dan)(dan)(dan)(dan)。另種是(shi)直(zhi)接用(yong)(yong)(yong)漏斗澆注(zhu)法，這要(yao)(yao)(yao)(yao)(yao)分外細(xi)致(zhi)的(de)(de)(de)(de)是(shi)要(yao)(yao)(yao)(yao)(yao)使(shi)漏斗的(de)(de)(de)(de)端部稍脫(tuo)離頸(jing)管(guan)(guan)(guan)，使(shi)液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)氮(dan)(dan)(dan)(dan)(dan)(dan)(dan)(dan)蒸發(fa)的(de)(de)(de)(de)氣(qi)體能從(cong)漏斗與容(rong)(rong)器的(de)(de)(de)(de)間(jian)隙順遂(sui)逸出(chu)， 不(bu)(bu)(bu)然會(hui)使(shi)液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)體從(cong)漏斗溢(yi)出(chu)，不(bu)(bu)(bu)但會(hui)增長_液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)氮(dan)(dan)(dan)(dan)(dan)(dan)(dan)(dan)喪失，且會(hui)產生凍傷(shang)(shang)變亂(luan)。充(chong)填(tian)液(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)(ye)氮(dan)(dan)(dan)(dan)(dan)(dan)(dan)(dan)的(de)(de)(de)(de)速(su)率要(yao)(yao)(yao)(yao)(yao)遲鈍，先(xian)注(zhu)入(ru)(ru)小量(liang)，然后稍停(ting)幾(ji)分鐘，使(shi)其(qi)冷(leng)卻再(zai)(zai)漸漸注(zhu)足至(zhi)劃定容(rong)(rong)量(liang)。取放(fang)貯精提(ti)斗時(shi)，應先(xian)將(jiang)提(ti)斗略為進(jin)(jin)(jin)步，使(shi)斗底(di)脫(tuo)離底(di)座，再(zai)(zai)將(jiang)提(ti)斗平行(xing)(xing)(xing)(xing)移至(zhi)罐(guan)(guan)的(de)(de)(de)(de)中間(jian)，順其(qi)天然向(xiang)(xiang)上(shang)(shang)(shang)提(ti)，行(xing)(xing)(xing)(xing)動要(yao)(yao)(yao)(yao)(yao)從(cong)容(rong)(rong)迅捷，不(bu)(bu)(bu)行(xing)(xing)(xing)(xing)利用(yong)(yong)(yong)強(qiang)力，以(yi)免(mian)扭彎(wan)或折斷痛處，取放(fang)提(ti)斗時(shi)還要(yao)(yao)(yao)(yao)(yao)細(xi)致(zhi)制(zhi)止(zhi)(zhi)(zhi)碰(peng)擦頸(jing)管(guan)(guan)(guan)內(nei)(nei)壁，以(yi)免(mian)破(po)壞頸(jing)管(guan)(guan)(guan)，手柄(bing)要(yao)(yao)(yao)(yao)(yao)放(fang)妥分度(du)圈(quan)內(nei)(nei)，蓋好(hao)蓋塞以(yi)免(mian)多跑(pao)氮(dan)(dan)(dan)(dan)(dan)(dan)(dan)(dan)。