手機版
1.分析天平在使用前沒有經過校準
yitaifenxitianpingzaishiyongzhiqian，shouxianyaoquerentadezhengquexingshifouhege，fouzegaitianpingsuochengliangdezhengquexingdebudaobaozheng。fenxitianpingcongshoucishiyongqi，yingduiqidingqixiaozhun。lianxushiyongdetianping，dayuemeixingqixiaozhunyici。xiaozhunshiyinganguidingchengxujinxing，bixushiyongbiaozhunfamajinxingxiaozhun，fouzejiangqibudaoxiaozhundezuoyong。
2.分析天平安裝不正確
在安裝分析天平時首先要選擇選防塵、防潮、防震、防風、防曬、恒(heng)溫(wen)的(de)房(fang)間(jian)作(zuo)為(wei)天(tian)平(ping)室(shi)。其(qi)次(ci)，天(tian)平(ping)應(ying)安(an)放(fang)在(zai)牢(lao)固(gu)可(ke)靠(kao)的(de)工(gong)作(zuo)台(tai)上(shang)，並(bing)選(xuan)擇(ze)適(shi)當(dang)的(de)位(wei)置(zhi)安(an)放(fang)。天(tian)平(ping)安(an)裝(zhuang)前(qian)，應(ying)按(an)裝(zhuang)箱(xiang)清(qing)單(dan)進(jin)行(xing)清(qing)點(dian)，看(kan)各(ge)部(bu)件(jian)是(shi)否(fou)齊(qi)全(quan)、完wan好hao，並bing對dui天tian平ping的de所suo有you部bu件jian進jin行xing仔zai細xi清qing潔jie。安an裝zhuang時shi，應ying參can照zhao天tian平ping的de說shuo明ming書shu正zheng確que裝zhuang配pei天tian平ping。安an裝zhuang完wan畢bi後hou應ying再zai次ci檢jian查zha各ge部bu分fen安an裝zhuang是shi否fou正zheng常chang，然ran後hou檢jian查zha電dian源yuan電dian壓ya是shi否fou符fu合he天tian平ping的de要yao求qiu，打da開kai天tian平ping檢jian查zha是shi否fou正zheng常chang。
3.環境及樣品的物理因素影響
在使用分析天平進行稱量的過程中，環境和物理因素會對稱量結果產生幹擾，如溫度、樣品揮發、吸濕、磁力、靜電等的幹擾。
（1）wendudebianhuaduifenxitianpingdeyingxiangruguozaichengliangguochengzhongfaxianxianshizhidanfangxiangpiaoyi，jiuyoukenengshiwendubianhuasuochanshengdeyingxiang。ruoyangpinyuzhouweihuanjingzhijiandewenducunzaichayi，zezhegewenduchayijiuhuidaozhiyanchengzhongrongqiliudongdeqiliu。kongqiyanzherongqiwaiceliudongchanshengyigexiangshangdezuoyongli，zhegelijiudaozhichengzhongjieguochanshengcuowu：樣(yang)品(pin)在(zai)動(dong)態(tai)浮(fu)力(li)作(zuo)用(yong)下(xia)，稱(cheng)得(de)的(de)重(zhong)量(liang)比(bi)實(shi)際(ji)要(yao)輕(qing)。這(zhe)個(ge)作(zuo)用(yong)直(zhi)到(dao)溫(wen)度(du)平(ping)衡(heng)形(xing)成(cheng)以(yi)後(hou)才(cai)會(hui)終(zhong)止(zhi)。當(dang)把(ba)樣(yang)品(pin)從(cong)幹(gan)燥(zao)爐(lu)或(huo)冰(bing)箱(xiang)中(zhong)取(qu)出(chu)以(yi)後(hou)，要(yao)等(deng)到(dao)樣(yang)品(pin)溫(wen)度(du)與(yu)實(shi)驗(yan)室(shi)或(huo)稱(cheng)量(liang)室(shi)溫(wen)度(du)一(yi)致(zhi)時(shi)才(cai)可(ke)以(yi)稱(cheng)量(liang)。樣(yang)品(pin)要(yao)放(fang)在(zai)表(biao)麵(mian)積(ji)盡(jin)可(ke)能(neng)小(xiao)的(de)去(qu)皮(pi)容(rong)器(qi)中(zhong)，取(qu)放(fang)稱(cheng)量(liang)容(rong)器(qi)要(yao)使(shi)用(yong)鑷(nie)子(zi)夾(jia)取(qu)，而(er)不(bu)能(neng)將(jiang)手(shou)放(fang)入(ru)稱(cheng)量(liang)室(shi)中(zhong)。
（2）yangpinxishihuohuifaduichengliangjieguodeyingxiangruguozaichengliangdeguochengzhongxianshizhidanfangxiangchixupiaoyi，zekenengceliangdeshihuifaxinghuoxishixingyangpin。ruoyangpinxishixingjiaoqiang，zezhonglianghuizengda；若ruo被bei測ce量liang樣yang品pin屬shu易yi揮hui發fa物wu質zhi，則ze重zhong量liang會hui減jian小xiao。對dui於yu吸xi濕shi性xing或huo揮hui發fa性xing樣yang品pin可ke使shi用yong細xi頸jing容rong器qi，給gei容rong器qi加jia蓋gai或huo上shang塞sai，使shi用yong清qing潔jie幹gan燥zao的de稱cheng重zhong容rong器qi並bing保bao持chi稱cheng盤pan上shang不bu粘zhan有you灰hui塵chen、汙染物及水滴。（3）yangpinhuorongqidaijingdianduichengliangjieguodeyingxiangruguomeicichengliangdouxianshibutongdechengliangjieguohuoxianshizhibuwending，huochengliangjieguodezhongfuxingcha，zekekaolvshichengliangrongqihuozheyangpindaiyoujingdian。jingdianxianxiangdeyingxiangjiangshimeicichengliangshichengzhongrongqijunxianshibutongdezhongliang，jieguodezhongfuxinghencha。juyougaojueyuandudecailiaoruboli、suliaozhidechengzhongrongqidengrongyidaijingdian。zhezhongdaidianxianxiangzhuyaoshiyouyuyangpinhuorongqizaibanyunguochengzhongjiaobanhuomocachanshengde，erqieyidandaidianzepaichudianhehuifeichanghuanman，zaixiangduishidudiyu40%deganzaokongqizhongchuxianyangpinhuorongqidaijingdiandejilvhuizengjia。tongchangkecaiyongdakaijiashiqihuoshidangtiaojiekongtiaoxitonglaizengjiakongqishidu，bachengzhongrongqifangzaijinshurongqineizaijinxingchengliang，shefageifenxitianpingjiedidengcuoshi，laiquchuhuopingbichengzhongyangpinshangdejingdian。
4.使用者操作不當造成稱量不準確
稱量前沒有檢查，盲目稱量。稱量前應檢查天平是否正常，天平是否水平，稱盤是否潔淨、顯示屏是否歸零“000”位等。
文章來源：網絡
