Home >
Community >
Cleaning of Stained magnetic stirrer and ceramic mortar and pestle?
Upvote
29
Downvote
+ Staining
+ Magnetic nanoparticles
+ Cleaning
+ Nanoparticle synthesis
Posted by
Marty Lemish
Cleaning of Stained magnetic stirrer and ceramic mortar and pestle?
Dear Abraham Abbey Paul It depends on the magnetic material. Ferrites, rare earth magnets and high-iron alloys will respond well to HCl (if dilute HCl, as suggested by Anamika Kadam , doesn't cut it try concentrated HCl). Others, such as high-nickel alloys, may require an oxidant, in which case you can (carefully) try aqua regia.
Dear Abraham Abbey Paul It depends on the magnetic material. Ferrites, rare earth magnets and high-iron alloys will respond well to HCl (if dilute HCl, as suggested by Anamika Kadam , doesn't cut it try concentrated HCl). Others, such as high-nickel alloys, may require an oxidant, in which case you can (carefully) try aqua regia.
Dear Abraham, Keep ceramic morter and pestle dipped in dilute HCl for more time and then ultrasonicate it. For magnetic stirrer, it's coil should not get damaged. So it would be better if you wrap the magnetic stirrer with Aluminium foil always. Hence staining problem can be avoided. To remove present staining, try acetone. Thanks.
Dear Abraham, Keep ceramic morter and pestle dipped in dilute HCl for more time and then ultrasonicate it. For magnetic stirrer, it's coil should not get damaged. So it would be better if you wrap the magnetic stirrer with Aluminium foil always. Hence staining problem can be avoided. To remove present staining, try acetone. Thanks.
Dear Abraham Abbey Paul It depends on the magnetic material. Ferrites, rare earth magnets and high-iron alloys will respond well to HCl (if dilute HCl, as suggested by Anamika Kadam , doesn't cut it try concentrated HCl). Others, such as high-nickel alloys, may require an oxidant, in which case you can (carefully) try aqua regia.
Dear Abraham Abbey Paul It depends on the magnetic material. Ferrites, rare earth magnets and high-iron alloys will respond well to HCl (if dilute HCl, as suggested by Anamika Kadam , doesn't cut it try concentrated HCl). Others, such as high-nickel alloys, may require an oxidant, in which case you can (carefully) try aqua regia.
Dear Sikta Panda It is best to stay away from highly toxic hexavalent chromium whenever possible. This type of treatment (sulfochromic mixtures in particular) was initially designed in a more safety-ignorant era for hard to dissolve organics, but even for those there are less poisonous options such as sulfuric-peroxide mixture (SPM). While you are not very likely to poison yourself with Cr(VI) in the lab, your toxic waste has to go somewhere... I recommend to watch the movie "Erin Brockovich". It's a good movie.
Dear Sikta Panda It is best to stay away from highly toxic hexavalent chromium whenever possible. This type of treatment (sulfochromic mixtures in particular) was initially designed in a more safety-ignorant era for hard to dissolve organics, but even for those there are less poisonous options such as sulfuric-peroxide mixture (SPM). While you are not very likely to poison yourself with Cr(VI) in the lab, your toxic waste has to go somewhere... I recommend to watch the movie "Erin Brockovich". It's a good movie.
I sincerely appreciate your kind answers, Sikta PandaAnamika Kadam and Emanuel Cooper they are wonderful. I got it cleaned with HCl as you have rightly suggested. Thank you very much for the movie you suggested, I'll look it up
I sincerely appreciate your kind answers, Sikta PandaAnamika Kadam and Emanuel Cooper they are wonderful. I got it cleaned with HCl as you have rightly suggested. Thank you very much for the movie you suggested, I'll look it up
Dear Abraham Abbey Paul
It depends on the magnetic material. Ferrites, rare earth magnets and high-iron alloys will respond well to HCl (if dilute HCl, as suggested by Anamika Kadam , doesn't cut it try concentrated HCl). Others, such as high-nickel alloys, may require an oxidant, in which case you can (carefully) try aqua regia.
Dear Abraham Abbey Paul
It depends on the magnetic material. Ferrites, rare earth magnets and high-iron alloys will respond well to HCl (if dilute HCl, as suggested by Anamika Kadam , doesn't cut it try concentrated HCl). Others, such as high-nickel alloys, may require an oxidant, in which case you can (carefully) try aqua regia.
More
VOTE
Dear Abraham,
Keep ceramic morter and pestle dipped in dilute HCl for more time and then ultrasonicate it.
For magnetic stirrer, it's coil should not get damaged. So it would be better if you wrap the magnetic stirrer with Aluminium foil always. Hence staining problem can be avoided.
To remove present staining, try acetone.
Thanks.
Dear Abraham,
Keep ceramic morter and pestle dipped in dilute HCl for more time and then ultrasonicate it.
For magnetic stirrer, it's coil should not get damaged. So it would be better if you wrap the magnetic stirrer with Aluminium foil always. Hence staining problem can be avoided.
To remove present staining, try acetone.
Thanks.
More
VOTE
Thank you for the information
Thank you for the information
More
VOTE
Dear Abraham Abbey Paul
It depends on the magnetic material. Ferrites, rare earth magnets and high-iron alloys will respond well to HCl (if dilute HCl, as suggested by Anamika Kadam , doesn't cut it try concentrated HCl). Others, such as high-nickel alloys, may require an oxidant, in which case you can (carefully) try aqua regia.
Dear Abraham Abbey Paul
It depends on the magnetic material. Ferrites, rare earth magnets and high-iron alloys will respond well to HCl (if dilute HCl, as suggested by Anamika Kadam , doesn't cut it try concentrated HCl). Others, such as high-nickel alloys, may require an oxidant, in which case you can (carefully) try aqua regia.
More
VOTE
Dear Sikta Panda
It is best to stay away from highly toxic hexavalent chromium whenever possible. This type of treatment (sulfochromic mixtures in particular) was initially designed in a more safety-ignorant era for hard to dissolve organics, but even for those there are less poisonous options such as sulfuric-peroxide mixture (SPM). While you are not very likely to poison yourself with Cr(VI) in the lab, your toxic waste has to go somewhere...
I recommend to watch the movie "Erin Brockovich". It's a good movie.
Dear Sikta Panda
It is best to stay away from highly toxic hexavalent chromium whenever possible. This type of treatment (sulfochromic mixtures in particular) was initially designed in a more safety-ignorant era for hard to dissolve organics, but even for those there are less poisonous options such as sulfuric-peroxide mixture (SPM). While you are not very likely to poison yourself with Cr(VI) in the lab, your toxic waste has to go somewhere...
I recommend to watch the movie "Erin Brockovich". It's a good movie.
More
VOTE
I sincerely appreciate your kind answers, Sikta Panda Anamika Kadam and Emanuel Cooper they are wonderful. I got it cleaned with HCl as you have rightly suggested.
Thank you very much for the movie you suggested, I'll look it up
I sincerely appreciate your kind answers, Sikta Panda Anamika Kadam and Emanuel Cooper they are wonderful. I got it cleaned with HCl as you have rightly suggested.
Thank you very much for the movie you suggested, I'll look it up
More
VOTE
Hey have you tried chromic acid? I use diluted chromic acid for cleaning my glassware, stirrers and also ceramics. Good luck
Hey have you tried chromic acid? I use diluted chromic acid for cleaning my glassware, stirrers and also ceramics. Good luck
More
VOTE