What tools do you use when weighing out micro grams of a solid white powder? - (Jul/17/2011 )
Hello, I was wondering if there are any good tips or tools that are used( special spatulas or something) that are used to put very small amounts of white powders onto a micro scale, then off of the microscale into solution. The problem is the amounts are so small that it is :
a ) hard to get a small amount from the small bottle to the weigh boat with the paper on top.
b ) it is impossible to move the powder from the weigh boat into the eppendorph tube ensuring that all of the powder has been transfered.
I was wondering if there are special tools or procedures that are used for these issues.
Thanks
I_love_immuno on Sun Jul 17 16:27:28 2011 said:
Hello, I was wondering if there are any good tips or tools that are used( special spatulas or something) that are used to put very small amounts of white powders onto a micro scale, then off of the microscale into solution. The problem is the amounts are so small that it is :
a ) hard to get a small amount from the small bottle to the weigh boat with the paper on top.
b ) it is impossible to move the powder from the weigh boat into the eppendorph tube ensuring that all of the powder has been transfered.
I was wondering if there are special tools or procedures that are used for these issues.
Thanks
I directly weigh in the Eppendorf tube and use a not too heavy lid with high enough rim as mount for the tube.
hobglobin on Sun Jul 17 16:42:03 2011 said:
I_love_immuno on Sun Jul 17 16:27:28 2011 said:
Hello, I was wondering if there are any good tips or tools that are used( special spatulas or something) that are used to put very small amounts of white powders onto a micro scale, then off of the microscale into solution. The problem is the amounts are so small that it is :
a ) hard to get a small amount from the small bottle to the weigh boat with the paper on top.
b ) it is impossible to move the powder from the weigh boat into the eppendorph tube ensuring that all of the powder has been transfered.
I was wondering if there are special tools or procedures that are used for these issues.
Thanks
I directly weigh in the Eppendorf tube and use a not too heavy lid with high enough rim as mount for the tube.
and you can use a microspatula- stainless steele with pointed or tapered tips so you can deposit the powder easily into the bottom of the tube...
hobglobin on Sun Jul 17 16:42:03 2011 said:
I_love_immuno on Sun Jul 17 16:27:28 2011 said:
Hello, I was wondering if there are any good tips or tools that are used( special spatulas or something) that are used to put very small amounts of white powders onto a micro scale, then off of the microscale into solution. The problem is the amounts are so small that it is :
a ) hard to get a small amount from the small bottle to the weigh boat with the paper on top.
b ) it is impossible to move the powder from the weigh boat into the eppendorph tube ensuring that all of the powder has been transfered.
I was wondering if there are special tools or procedures that are used for these issues.
Thanks
I directly weigh in the Eppendorf tube and use a not too heavy lid with high enough rim as mount for the tube.
Awesome, u have sparked many good ideas... thanks!
casandra on Sun Jul 17 17:04:57 2011 said:
hobglobin on Sun Jul 17 16:42:03 2011 said:
I_love_immuno on Sun Jul 17 16:27:28 2011 said:
Hello, I was wondering if there are any good tips or tools that are used( special spatulas or something) that are used to put very small amounts of white powders onto a micro scale, then off of the microscale into solution. The problem is the amounts are so small that it is :
a ) hard to get a small amount from the small bottle to the weigh boat with the paper on top.
b ) it is impossible to move the powder from the weigh boat into the eppendorph tube ensuring that all of the powder has been transfered.
I was wondering if there are special tools or procedures that are used for these issues.
Thanks
I directly weigh in the Eppendorf tube and use a not too heavy lid with high enough rim as mount for the tube.
and you can use a microspatula- stainless steele with pointed or tapered tips so you can deposit the powder easily into the bottom of the tube...
I shall seek out a micro spatula!
thanks
don forget to tare the miocrotube before weighing!!! 
Haha for sure. That process takes like 10 -20 minutes with my crazy scale 