[Pjedi]

Hi, For a certain experiment I need to weigh enriched stable isotopes very accurately. Because of the high cost of this isotopes I can't take any bigger amount to weigh them accurately.

In my case, I need 4,173 mg of Ni 62 which is enriched for 98,2 %. I have trained to get the weight accurately using normal Ni and a satorius E2, which s able to measure weight accurately until 1 µg . So far the weight has an error for at least  10%.

Did anyone have the same problem? I would appreciate all kind of hints.

[curiouscat]

In my case, I need 4,173 mg of Ni 62 which is enriched for 98,2 %. I have trained to get the weight accurately using normal Ni and a satorius E2, which s able to measure weight accurately until 1 µg . So far the weight has an error for at least  10%.

How did you measure / quantify this error?

For a certain experiment I need to weigh enriched stable isotopes very accurately.

How accurately do you need to measure.

[Pjedi]

In my case, I need 4,173 mg of Ni 62 which is enriched for 98,2 %. I have trained to get the weight accurately using normal Ni and a satorius E2, which s able to measure weight accurately until 1 µg . So far the weight has an error for at least  10%.

How did you measure / quantify this error?

I just picked some natural abundant Ni and some weighing scales and started repeating the same experiment 5 times.

For a certain experiment I need to weigh enriched stable isotopes very accurately.

How accurately do you need to measure.

I want error below 2%

[JGK]

For that level of accuracy you will need a 6 decimal place balance (Sartorius ME36 or equivalent)