How to handle calibration weights: Ten practical tips

How you handle, clean and store test weights can make a big difference in the accuracy of your weighing processes. Test weights must be handled with care.

This video covers the following topics:
- Store weights in original packing
- Store weights near the balance
- Handle weights with care
- Clean according to OIML/ASTM recommendation
- Use specialized handles for bigger weights
- Inspect for damage prior to use
- Do not touch weights with bare hands
- Do not forget periodic calibration of test weights
- Do not use a weight with dust or water on its surface
- Do not clean with abrasive or caustic chemicals

0:14 - Store weights in original packing
0:33 - store weights near the balance
0:59 - handle weights with care
1:19 - Clean according to OIML/ASTM recommendation
1:37 - Use specialized handles for bigger weights
1:59 - Inspect for damage prior to use
2:14 - Do not touch weights with bare hands
2:41 - Do not forget periodic calibration of test weights
2:51 - Do not use a weight with dust or water
3:04 - Do not clean with abrasive chemicals

[jenniferjackson]

Am looking for information on the proper cleaning of the CarePac weights, fork, and tweezers. Do you have a video link to that?

[krisma]

for some reason when they forced the tweezers to hold the 2kg weight that made me laugh lol. i've definitely done that a few time

[PaulinaHernandezYanez]

If the same kit is used for multiple balances at multiple locations, how far in advance does the kit need to be near the testing balance for temperature stabilization?

[YourWealthCome]

I just got an electronic balance and it says Never touch the included weight with your skin. Is it because of oils or is the weight itself toxic?

[miguelpacahualacristobal]

Hello, tip 6 is not clear to me, why is one form not correct?
In tip 7: if the 2kg weight has the special accessory to move the weight, why take it by hand (wearing gloves), by doing this heat is also transmitted to the weight.

[dedamarsovac]

How much do properly handled test weights actually change in mass in the interval of periodic calibration? ( 1 year?)
If they were to be calibrated/checked every 10 years or so, would that mean that the calibration is valid for the whole 10 year period if the mass of the weight is in spec?
What are the chances for 200.00g weight to become 200.33g as shown in video? :D
They'd really have to be poorly handled for that I guess.

[kalpeshpatil]

Why there is 2 weights of 2mg, 20mg, 2g, 20g, 200g.
Why not other weights?