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[實驗] HPLC移動相內加入酸or鹽

[ Chemistry ]4 留言, 推噓總分: 0

作者: suila - 發表於 2012/05/31 17:50(12年前)

1^F→tony15899:看能不能只加酸, 用鹽類會出現問題是有機相比例過高時05/31 18:16

2^F→tony15899:鹽類會析出水相較高的話應該也是可以用05/31 18:17

3^F→tony15899:混用不太確定,你需要確認這2種物質流洗出的溶劑強度05/31 18:23

[實驗] 測NMR之最小濃度

[ Chemistry ]36 留言, 推噓總分: +13

作者: HPLC - 發表於 2012/05/07 21:03(12年前)

10^F→tony15899:正負電不一定都能游離得好05/07 23:44

[實驗] 零殘留tip

[ Chemistry ]5 留言, 推噓總分: +1

作者: tttp - 發表於 2012/03/06 08:05(12年前)

3^F→tony15899:用氣密針配03/06 21:42

[實驗] HPLC 分析已知跟未知

[ Chemistry ]32 留言, 推噓總分: +4

作者: pp09207 - 發表於 2012/02/16 00:21(12年前)

9^F推tony15899:用快速分析應該能跑完啦有沒有設備就是很大的問題02/16 12:13

10^F→tony15899:我們就沒有QQ02/16 12:13

[實驗] 請問四氫夫喃(THF)對皮膚有腐蝕性嗎?

[ Chemistry ]18 留言, 推噓總分: +11

作者: handy012 - 發表於 2012/02/09 13:51(12年前)

2^F推tony15899:會把實驗手套溶掉02/09 14:09

[實驗] 請問打GC前用的過濾膜(小飛碟)

[ Chemistry ]7 留言, 推噓總分: +4

作者: tttp - 發表於 2012/02/08 21:30(12年前)

3^F推tony15899:會多塑化劑 XD02/09 13:23

[實驗] 常見的TLC顯色劑配方

[ Chemistry ]11 留言, 推噓總分: +5

作者: Corsairs - 發表於 2012/01/29 23:19(12年前)

7^F推tony15899:碘不是也可以冉有雙鍵的?01/30 12:54

8^F→tony15899: 染01/30 12:55

[學習] 濃度溶液的問題

[ Chemistry ]2 留言, 推噓總分: 0

作者: fablissful - 發表於 2012/01/10 23:16(12年前)

1^F→tony15899:(1) 用一樣NaOH濃度溶液去稀釋即可01/11 00:05

Re: [實驗] HPLC Column 壓力之問題

[ Chemistry ]23 留言, 推噓總分: +5

作者: HPLC - 發表於 2011/12/15 11:29(12年前)

4^F推tony15899:有可能是管柱內的frit塞住了,叫賣管柱廠商換吧12/15 13:27

[實驗] HPLC Column 壓力之問題

[ Chemistry ]32 留言, 推噓總分: +6

作者: HPLC - 發表於 2011/12/12 11:02(12年前)

6^F推tony15899:水有換嗎, 濾過的水還是會長微生物的12/12 13:55

12^F推tony15899:水你沒加甚麼添加劑就只是水的話還是常換吧12/12 16:14

15^F推tony15899:2-3天換水吧12/12 18:54

18^F→tony15899:沒有遇過不過有聽說很久以前發生過線路(?)塞住12/12 22:49

19^F→tony15899:然後是透明滑滑狀的東西12/12 22:50

24^F→tony15899:請問金屬的frit除了有機溶劑還能用什麼清洗嗎?12/13 22:02

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