国产精品久久久久无码人妻网站,vr专区自拍无码中文字幕精品,国产熟妇另类久久久久久

弗爾德（上海）儀器設備有...

查看電話 在線咨詢

立即詢價

您提交后，專屬客服將第一時間為您服務

點擊提交代表您同意《用戶服務協議》《隱私政策》

O determination in copper samples

閱讀：5733 發布時間：2015-05-15

Suitable analyzers
n ON 900
n OH 900
n ONH 2000
Used accessories
n Graphite crucibles (90190)
n Suitable calibration material (NIST or other)
Settings
n Comparator level: 20 mV
n Minimum time: 15 sec
n Maximum time: 1:30 min
n Post waiting: 10 sec
n Base line deviation: 200 mV;
Step: 16 mV; Time: 10 sec
n Mode: continuous
n Outgas
Time: 45 sec
Power: 3.5 kW
n Time
Purge: 20 sec
Stability: 45 sec
n Integration delay
IR cell: 2 sec
TC cell: 10 sec
n Analyse (1)
Time: 75 sec
Power (1): 3.0 kW
Power (2): 3.0 kW
Sample preparation
Make sure that the surface of the copper is free from
contaminations; otherwise clean the sample with acetone
p.a. and let dry at atmosphere. In case of very low oxygen
concentrations (< 5 ppm) rinse the sample in nitric acid
(HNO3) first, than water, last with acetone. Let this sample
dry at atmosphere and analyze immediay.
Procedure
n Prepare ELTRA analyzer (exchange anhydrone, sodium
hydroxide, copper oxide or Schuetze reagent when
necessary), clean furnace, sample drop mechanism,
electrode tip
n Run three blanks with empty crucibles
n Calibrate the analyzer with suitable calibration
material (NIST or other)
(1) Place empty crucible (90190) on the electrode tip,
close furnace (F2 Button)
(2) Weigh calibration material (usually pins)
(3) Place calibration material in the sample drop
mechanism and start analysis (F5 Button)
Repeat steps (1) – (3) at least three times;
Mark the results and use the calibration function in the
software.

提供商	弗爾德（上海）儀器設備有限公司	下載次數	271次
資料大小	343KB	資料類型	PDF 文件免費下載該資料
資料圖片	--	瀏覽次數	5733次

成人做爰免费视频免费看_成人a级高清视频在线观看,成人a大片在线观看,成人a大片高清在线观看,成人av在线播放,一a一级片,一级黄中国色片,一级黄色蝶片,一级黄色片生活片

O determination in copper samples

產品展示

會員登錄

收藏該商鋪

提示

成人做爰免费视频免费看_成人a级高清视频在线观看,成人a大片在线观看,成人a大片高清在线观看,成人av在线播放,一a一级片,一级黄 中国色 片,一级黄 色蝶 片,一级黄色 片生活片

O determination in copper samples

產品展示

會員登錄

收藏該商鋪

提示

成人做爰免费视频免费看_成人a级高清视频在线观看,成人a大片在线观看,成人a大片高清在线观看,成人av在线播放,一a一级片,一级黄中国色片,一级黄色蝶片,一级黄色片生活片