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作者 tony15899 在 PTT [ Chemistry ] 看板的留言(推文), 共460則

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[問題] 如何高溫煮製油品不產生油耗味？

[ Chemistry ]7 留言, 推噓總分: 0

作者: joyca - 發表於 2019/06/22 23:53(4年前)

1^F→tony15899: 木工用油為什麼需要高溫去煮?06/24 09:52

4^F→tony15899: 一般是用多元不飽和油脂如亞麻仁或桐油之類的去塗06/24 18:58

5^F→tony15899: 這類油脂快速氧化聚合形成保護層06/24 19:01

6^F→tony15899: 要加速處理也是塗完後器具去加溫油加溫只會裂變06/24 19:08

7^F→tony15899: 你要自己DIY需要容器加熱包真空幫浦，還要抓條件06/25 10:41

[實驗] HPLC壓力升高的問題

[ Chemistry ]42 留言, 推噓總分: +12

作者: soursourhsua - 發表於 2019/06/07 00:47(5年前)

9^F推tony15899: 1. 管柱髒(注射樣品沒洗出來)跟壓力沒太大關連06/07 15:02

10^F→tony15899: 2. 有裝保護管柱就不太可能在column frit堵住06/07 15:03

11^F→tony15899: 3. 最有可能是鹽類沉積用高比例水相去洗(可加溫)06/07 15:07

12^F→tony15899: 水相理論上是要每次換真的很懶的話不要隔周06/07 15:09

13^F→tony15899: 但這取決於實驗室環境有些人會在水相加5%有機相06/07 15:09

14^F→tony15899: precolumn如果是指保護管柱的話超音波沒什麼用06/07 15:11

15^F→tony15899: 萬一塞住就是直接換一顆或是更換內部過濾材06/07 15:11

Re: [資訊] ICP-OES 分析服務價格？

[ Chemistry ]15 留言, 推噓總分: +4

作者: Pissoff - 發表於 2019/06/04 17:56(5年前)

9^F→tony15899: 這價格真的低到不可思議還外加送國外06/04 21:22

[實驗] 去淘寶買化學器材

[ Chemistry ]13 留言, 推噓總分: +5

作者: zumdahl - 發表於 2019/04/19 12:15(5年前)

1^F→tony15899: 你可以想像玻璃器具經過層層運送後到你手上的樣子04/19 12:28

9^F→tony15899: 重點是你要怎麼報帳04/20 13:34

[生活] 在家裡有機solvent怎麼處理?

[ Chemistry ]105 留言, 推噓總分: +25

作者: aegisty - 發表於 2019/04/14 18:01(5年前)

27^F→tony15899: 陳年油垢都嚴重氧化，那種你想用溶劑溶都很困難04/15 10:48

[實驗] 鋼瓶閥門供氣穩定度

[ Chemistry ]20 留言, 推噓總分: +3

作者: xxxx85214 - 發表於 2019/03/31 12:07(5年前)

2^F→tony15899: 鋼瓶壓力錶接出來後再裝一個調壓閥?03/31 16:54

[生活] 種樹真的可以減少溫室效應嗎?

[ Chemistry ]3 留言, 推噓總分: +1

作者: aegisty - 發表於 2019/03/21 16:41(5年前)

3^F→tony15899: 植樹重點區域不在都市03/21 19:23

[生活] 煮水加蓋比較慢？已刪文

[ Chemistry ]1 留言, 推噓總分: 0

作者: bowenhp1234 - 發表於 2019/03/01 15:41(5年前)

1^F→tony15899: 書上哪裡有寫開蓋子會提高溫度?03/01 16:12

[資訊] 哪些微量的物質會於試驗過程中散失?已刪文

[ Chemistry ]8 留言, 推噓總分: 0

作者: hc22 - 發表於 2019/01/21 15:36(5年前)

1^F→tony15899: 就是因為不知道所以才會這樣寫個人看法01/21 16:22

[學習] 現在國中生，老師要求B族全背?

[ Chemistry ]61 留言, 推噓總分: +26

作者: candy88257 - 發表於 2018/12/21 22:21(5年前)

13^F→tony15899: 這跟教師的教學能力有關係單純背誦對教學最省事12/22 11:47

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