G***O 发帖数: 839 | 1 买一套chemglass的蒸馏加上铁架台应该也可以把。最多加heat mentle |
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r**********n 发帖数: 14 | 3 我们做HF的反应是在塑料的圆底烧瓶里做的,记得是在ALDRICH买的,CHEMGLASS 也有
卖的。 |
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o******r 发帖数: 57 | 4 记得以前曾经在这个版上看到过关于化学玻璃仪器的讨论。Chemglass 的东西质量不错
但是价格挺高。记得上次有人提及一两家价廉物美的中国厂商(经销商),但是查询了一
下没有找到。有谁能再提供一下有关信息吗?
多谢了先! |
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t***u 发帖数: 20182 | 5 《中华人民共和国电信与信息服务业务经营许可证》编号:京ICP备05078652号
客服mm可以说中文。感觉他们的质量比chemglass的还好,起码厚实 |
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s*******h 发帖数: 3731 | 7 陈老莫生气,不蒸就结了。。。
如果是大量的,chemglass有那种懒人用的装备,直接从瓶子里吸到你的旋蒸烧瓶里。。 |
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f****w 发帖数: 407 | 8 看看synthware和chemglass
我记得我买的几百块钱 |
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R*****U 发帖数: 241 | 10 just big glass column for normal organic separation. I used the column with
diameter 10 cm at least, height 1.2m. But I can not find it from chemglass
or synthware. |
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R*****U 发帖数: 241 | 11 我说得就是这种,他们曲解了,关键哪里买,synthware chemglass catalogues 的柱
子小 |
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k****x 发帖数: 2751 | 12 厨房里面装一个2米的fume hood,多大的油烟也不怕老人抱怨美式厨房没有门,搞得家
里到处是油烟。Hood旁边放一温控摇床,酿个米酒,绝对容易。一套蒸汽灭菌锅炉,那
是必须的,保证每次发酵成功。储存市里面丢一套真空泵,连上双排管,(对,就是
chemglass牌的,post dog都认这牌子)对,还要附上氩气罐(氮气太便宜,不要)你说
要这设备干什么?连上真空箱,炸好的馓子、油条放里面,先上真空,然后氩气一直通
着,一万年后拿出来都脆蹦不坏。这不比大农村华人超市里面的冰冻油条强太多了。
老美的自来水还不够好,等上净水器,什么? PUR是名牌? 那多不专业, 要上
millipore的一整套,什么离子交换树脂,UV杀菌,0.22um过滤,一个都不能少。一测
电阻,哟,18.2M欧姆,看这数字就知道它够纯,喝着那个放心加舒心啊。瞧这水软的
,洗衣服还省肥皂呢,丈母娘一定喜欢。
咱有钱了,那么用盐就要讲究一个字,纯!不要被什么天然海盐糊弄,谁知道里面有些
什么重金属。sigma 99.5%的NaCl还不能彰显咱有钱人的气势,要上merck 99.99才好。
大功率超声那是一定要备一台,啊... 阅读全帖 |
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b**********r 发帖数: 91 | 14 chemglass也有类似的,solid addition flask, 纯玻璃,更便宜,学校的玻璃工就可
以做 |
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s****e 发帖数: 2934 | 17 你不用油浴的bubbler吗?去chemglass买一个。你的反应用3口烧瓶,两边加上水冷凝
管,一边进N2一边出N2,出氮气的冷凝管再和bubbler相连。如果是close system就用
冷凝管加baloon。
推荐看 The manipulation of air sensitive compounds 这本书
catalyst的用量为啥不自己查文献?
solvent
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q****i 发帖数: 6923 | 18 来自主题: Macromolecules版 - 在线急问 call chemglass |
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b*****y 发帖数: 40 | 19 First very sorry about what happened. Hope nothing happened with the safety
of yourself.
The b.p. of EO is only ~ 10 deg C, it is extremely flammable, and it is an
carcenogen, so give it with your highest care possible. That means, no
nights, no weekends, always have labmates nearby, among many other things.
Out of the three reasons, #1 is highly possible. Definitely dilute with much
much more THF. I typically have 40 grams of EO with ~ 800 mL of THF, but at
40 deg C. If you have done a good job... 阅读全帖 |
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b*****y 发帖数: 40 | 20 First very sorry about what happened. Hope nothing happened with the safety
of yourself.
The b.p. of EO is only ~ 10 deg C, it is extremely flammable, and it is an
carcenogen, so give it with your highest care possible. That means, no
nights, no weekends, always have labmates nearby, among many other things.
Out of the three reasons, #1 is highly possible. Definitely dilute with much
much more THF. I typically have 40 grams of EO with ~ 800 mL of THF, but at
40 deg C. If you have done a good job... 阅读全帖 |
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