Calibration Weight Uncertainties
Troemner’s calibration weight uncertainties match or exceed most national laboratories, and are second only to NIST. We strive to provide our customers with the lowest weight measurement uncertainties achievable, made possible through a combination of industry expertise, progressive weight calibration philosophies, and cutting-edge mass comparator robots. All our weight calibration services are fully ISO/IEC 17025 compliant, accredited by NVLAP (Laboratory Code 105013-0). Reference the chart below and see how Troemner offers the lowest accredited weight uncertainties for some of the most popular calibration weight values compared to other weight calibration companies.
Weight Uncertainties (Comparing Best Measurements Among Competitors) | ||||||
Mass | Troemner Advantage | Troemner Uncertainty NVLAP* 17025 | Rice Lake (Rice Lake, WI) | Transcat (Philadelphia, PA) | ICL (Stuart, FL) | ISS (Lansdale, PA) |
10 g 50 g 100 g 1 kg 5 kg 10 kg | 141% - 181% more accurate 108% - 181% more accurate 104% - 185% more accurate 31% - 185% more accurate 71% - 194% more accurate 70% - 190% more accurate | 1.1 ug 2.2 ug 3.8 ug 35 ug 0.18 mg 0.37 mg | 6.4 ug 7.4 ug 12 ug 48 ug 0.38 mg 0.77 mg | 6.5 ug 12 ug 25 ug 220 ug 1.3 mg 3.4 mg | 17 ug 35 ug 55 ug 400 ug 3 mg N/A | 23 ug 46 ug 95 ug 920 ug 11 mg 14 mg |
See Troemner’s Calibration Weight Uncertainty Chart Here
What are Calibration Weight Uncertainties?
Calibration weight uncertainty tells you how close your calibration weight or scale weight is to its expected tolerance. Over time calibration weights will gain or lose mass, which means at minimum, they need to be professionally calibrated at least once per year. During the calibration process, the weight is measured against tightly controlled mass standards to determine its true weight, and if that mass reading still falls within the standard deviation tolerance requirements of the weight. Knowing the uncertainty of weight measurements is the key indicator in gauging how accurate your weight calibration services are.
For example, if your digital scale only reads out two decimal places, a 10g weight will report a mass of 10.00g. However, if the same weight was put on a high precision analytical balance, the true mass of the 10g weight might read like 10.0024g. Weight uncertainty is knowing exactly how close a weight’s mass is to it’s reported tolerance.
So if your ASTM Class 0 10g weight has a tolerance of 0.025, it would need to weigh 10g, deviating from that exact weight by no more than 0.025 g. With our state-of-the-art facilities and robotic mass comparators, we can tell you accuracy of an ASTM Class 0 10g weight within 0.0060 grams. Troemner’s weight uncertainty accuracy is 122% more precise than the needed tolerance, which means you are getting the most comprehensive and accurate information regarding your calibration weight’s mass.
The lower a calibration lab’s uncertainty, the more confidence you will have in the exact accuracy of their calibration service, or in other words, weight uncertainty provides the statistical confidence that a calibration laboratory has on its calibration process. That’s why it’s always important to view a calibration laboratory’s uncertainty chart before choosing a lab for weight calibration. All weight calibration labs are not created equally, and cannot guarantee the same levels of accuracy as other labs depending on their robotic equipment, calibration philosophies, and test facilities.
See Troemner’s Calibration Weight Uncertainty Chart Here
When determining how accurate you need your weight calibration service to be, keep in mind the class of your scale, balance, or weighing instruments, the tolerance of your calibration weight, and the federal regulations governing compliance in your industry. For high precision balances and low tolerance calibration weights, it’s essential to know you’re getting the most accurate results. That’s why Troemner strives to offer the lowest weight uncertainties possible, because you deserve the confidence that comes with unmatched precision.
Troemner’s Calibration Philosophy
Our philosophy is to provide the highest level of calibration quality by pursuing every measurement detail in order to achieve the most accurate and repeatable calibrations in the industry. There is no such thing as a standard uncertainty, and each calibration lab has it’s uncertainty calculated by its equipment, calibration facilities, and weight calibration process. Troemner’s procedures utilize multiple standards during a calibration to assure the accuracy of the process and to validate the standards. If a measurement does not pass statistical tests calculated during each calibration, then the measurements are repeated and an investigation is initiated to find the root cause of the failure. We recommend weight calibration service for all weight types, including test weights, scale weights, balance weights, ASTM weights, and OIML weights.
World Class Laboratories
Troemner’s laboratories provide customers with all the data and traceability information they need for their calibration items. The Calibration Laboratories’ physical environment and state-of-the-art equipment enable Troemner to produce measurement results with very small uncertainties for its customers.
Our weight calibration laboratories have been constructed to create an environment of stable temperature, humidity, low vibrations, and low air velocity. We achieved this by specifically building our weight calibration laboratory as a “building within a building”.
Troemner’s three Echelon I and one Echelon II calibration labs sit on 30” foundations that are separately isolated from the rest of the building with layers of sand and concrete to eliminate outside vibrations. Additionally, all labs have dedicated HVAC systems, two-stage entryways, and 12” vapor barriers to reduce all instances of outside contamination as effectively as possible. This reduces the uncertainty of our weighing balances, allowing for the most accurate measurements possible.
There are many calibration laboratories that are able to perform weight calibrations, but only Troemner offers the lowest weight uncertainties, beaten only national laboratories which do not perform commercial weight calibration services.
Absolutely. Positively. Precise.
Don’t take our word for it, see for yourself how precise Troemner’s weight uncertainties are. World Class facilities, cutting edge technology, and a commitment to excellence is what makes Troemner a leader in Weight Calibration Service. If you want absolute confidence in your weighing results, trust Troemner.
Click here to view our Weight Uncertainty Chart
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Troemner Uncertainty Chart Quick Reference
Troemner Weight Uncertainty Chart
ASTM E617
Nominal Value | Troemner CMC | 000 | 00 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
2000 kg |
|
|
|
|
| 5 g | 5 g | 10 g | 10 g | 50 g | 100 g |
1000 kg |
|
|
|
|
| 3.2 | 3.2 | 5 | 5 | 25 | 50 |
500 kg |
|
|
|
|
| 1.2 | 1.2 | 2.5 | 2.5 | 12 | 25 |
200 kg |
|
|
|
|
| 0.44 | 0.44 | 1 | 1 | 5 | 10 |
100 kg |
|
|
|
|
| 2 | 2 | 0.5 | 0.5 | 2.5 | 5 |
50 kg | 2 mg | 3 mg | 6 mg | 15 mg | 25 mg | 25 mg | 25 mg | 200 mg | 200 mg | 500 mg | 500 mg |
30 kg | 1.2 | 1.8 | 3 | 9 | 15 | 15 | 15 | 120 | 120 | 300 | 300 |
25 kg | 0.97 | 1.6 | 3 | 7 | 12 | 12 | 12 | 100 | 100 | 250 | 250 |
20 kg | 0.76 | 1.2 | 2.5 | 6 | 10 | 10 | 10 | 80 | 80 | 200 | 200 |
10 kg | 0.37 | 0.4 | 1 | 3 | 5 | 5 | 5 | 40 | 40 | 100 | 100 |
5 kg | 0.18 | 0.16 | 0.5 | 1.5 | 2.5 | 2.5 | 2.5 | 20 | 20 | 50 | 50 |
3 kg | 0.11 | 0.08 | 0.5 | 0.9 | 1.5 | 1.5 | 1.5 | 12 | 12 | 30 | 30 |
2 kg | 0.072 | 0.08 | 0.25 | 0.6 | 1 | 1 | 1 | 8 | 8 | 20 | 20 |
1 kg | 0.035 | 0.05 | 0.15 | 0.3 | 0.5 | 0.5 | 0.5 | 4 | 4 | 10 | 10 |
500 g | 0.018 | 0.04 | 0.06 | 0.15 | 0.25 | 0.25 | 0.25 | 2 | 2 | 7 | 7 |
300 g | 0.012 | 0.03 | 0.06 | 0.09 | 0.15 | 0.15 | 0.15 | 1.2 | 1.2 | 6 | 6 |
200 g | 0.0073 | 0.012 | 0.025 | 0.06 | 0.1 | 0.1 | 0.1 | 0.8 | 0.8 | 4 | 4 |
100 g | 0.0038 | 0.003 | 0.01 | 0.03 | 0.05 | 0.05 | 0.05 | 0.4 | 0.4 | 2 | 2 |
50 g | 0.0022 | 0.002 | 0.007 | 0.015 | 0.025 | 0.025 | 0.025 | 0.25 | 0.25 | 1 | 1 |
30 g | 0.0026 | 0.002 | 0.007 | 0.009 | 0.015 | 0.015 | 0.015 | 0.18 | 0.18 | 0.6 | 0.6 |
20 g | 0.0013 | 0.002 | 0.006 | 0.008 | 0.015 | 0.015 | 0.015 | 0.14 | 0.14 | 0.4 | 0.4 |
10 g | 0.0011 | 0.015 | 0.005 | 0.006 | 0.01 | 0.01 | 0.01 | 0.1 | 0.1 | 0.2 | 0.2 |
5 g | 0.0009 | 0.001 | 0.003 | 0.004 | 0.007 | 0.007 | 0.007 | 0.07 | 0.07 | 0.15 | 0.15 |
3 g | 0.0014 | 0.001 | 0.003 | 0.004 | 0.006 | 0.006 | 0.006 | 0.06 | 0.06 | 0.13 | 0.13 |
2 g | 0.00075 | 0.001 | 0.003 | 0.004 | 0.006 | 0.006 | 0.006 | 0.05 | 0.05 | 0.11 | 0.11 |
1 g | 0.00054 | 0.0008 | 0.0025 | 0.001 | 0.006 | 0.006 | 0.006 | 0.04 | 0.04 | 0.09 | 0.09 |
500 mg | 0.00049 | 0.0005 | 0.0009 | 0.001 | 0.0025 | 0.0025 | 0.0025 | 0.01 | 0.01 | 0.04 | 0.04 |
300 mg | 0.00072 | 0.0005 | 0.0009 | 0.001 | 0.0025 | 0.0025 | 0.0025 | 0.01 | 0.01 | 0.04 | 0.04 |
200 mg | 0.00040 | 0.0005 | 0.0009 | 0.001 | 0.0025 | 0.0025 | 0.0025 | 0.01 | 0.01 | 0.04 | 0.04 |
100 mg | 0.00040 | 0.0005 | 0.0009 | 0.001 | 0.0025 | 0.0025 | 0.0025 | 0.01 | 0.01 | 0.04 | 0.04 |
50 mg | 0.00023 | 0.0005 | 0.0009 | 0.001 | 0.0025 | 0.0025 | 0.0025 | 0.01 | 0.01 | 0.04 | 0.04 |
30 mg | 0.00020 | 0.0005 | 0.0009 | 0.001 | 0.002 | 0.002 | 0.002 | 0.01 | 0.01 | 0.04 | 0.04 |
20 mg | 0.00020 | 0.0005 | 0.0009 | 0.001 | 0.002 | 0.002 | 0.002 | 0.01 | 0.01 | 0.04 | 0.04 |
10 mg | 0.00020 | 0.0005 | 0.0009 | 0.001 | 0.002 | 0.002 | 0.002 | 0.01 | 0.01 | 0.04 | 0.04 |
5 mg | 0.00020 | 0.0005 | 0.0009 | 0.001 | 0.002 | 0.002 | 0.002 | 0.01 | 0.01 | 0.02 | 0.02 |
3 mg | 0.00020 | 0.0005 | 0.0009 | 0.001 | 0.002 | 0.002 | 0.002 | 0.01 | 0.01 | 0.02 | 0.02 |
2 mg | 0.00020 | 0.0005 | 0.0009 | 0.001 | 0.002 | 0.002 | 0.002 | 0.01 | 0.01 | 0.02 | 0.02 |
1 mg | 0.00020 | 0.0005 | 0.0009 | 0.001 | 0.002 | 0.002 | 0.002 | 0.01 | 0.01 | 0.02 | 0.02 |
0.5 mg | 0.00020 | 0.0005 | 0.0009 | 0.001 | 0.002 | 0.002 | 0.002 | 0.01 | 0.01 | 0.02 | 0.02 |
0.2 mg | 0.00020 | 0.0005 | 0.0009 | 0.001 | 0.002 | 0.002 | 0.002 | 0.01 | 0.01 | 0.02 | 0.02 |
0.1 mg | 0.00020 | 0.0005 | 0.0009 | 0.001 | 0.002 | 0.002 | 0.002 | 0.01 | 0.01 | 0.02 | 0.02 |
0.05 mg | 0.00020 | 0.0005 | 0.0009 | 0.001 | 0.002 | 0.002 | 0.002 | 0.01 | 0.01 | 0.02 | 0.02 |
Troemner Weight Uncertainty Chart
OIML R117
Nominal Value | Troemner CMC | E0* | E1 | E2 | F1 | F2 | M1 | M2 + M3 |
2000 kg |
|
|
|
| 5 g | 10 g | 10 g |
|
1000 kg |
|
|
|
| 3.2 | 5 | 5 |
|
500 kg |
|
|
|
| 1.2 | 2.5 | 2.5 |
|
200 kg |
|
|
|
| 0.46 | 1 | 1 |
|
100 kg |
|
|
|
| 0.44 | 0.5 | 0.5 |
|
50 kg | 2 mg | 3 mg | 6 mg | 21 mg | 25 mg | 25 mg | 200 mg | 500 mg |
30 kg | 1.2 | 1.8 | 3 |
|
|
|
|
|
25 kg | 0.97 | 1.6 | 3 |
|
|
|
|
|
20 kg | 0.76 | 1.2 | 2.5 | 6 | 10 | 10 | 80 | 200 |
10 kg | 0.37 | 0.4 | 1 | 3 | 5 | 5 | 40 | 100 |
5 kg | 0.18 | 0.16 | 0.5 | 1.5 | 2.5 | 2.5 | 20 | 50 |
3 kg | 0.11 | 0.08 | 0.5 |
|
|
|
|
|
2 kg | 0.072 | 0.08 | 0.25 | 0.6 | 1 | 1 | 8 | 20 |
1 kg | 0.035 | 0.05 | 0.15 | 0.3 | 0.5 | 0.5 | 4 | 10 |
500 g | 0.018 | 0.04 | 0.06 | 0.15 | 0.25 | 0.25 | 2 | 7 |
300 g | 0.012 | 0.03 | 0.06 |
|
|
|
|
|
200 g | 0.0073 | 0.012 | 0.025 | 0.06 | 0.1 | 0.1 | 0.8 | 4 |
100 g | 0.0038 | 0.003 | 0.01 | 0.03 | 0.05 | 0.05 | 0.4 | 2 |
50 g | 0.0022 | 0.002 | 0.007 | 0.015 | 0.025 | 0.025 | 0.25 | 1 |
30 g | 0.0026 | 0.002 | 0.007 |
|
|
|
|
|
20 g | 0.0013 | 0.002 | 0.006 | 0.008 | 0.015 | 0.015 | 0.14 | 0.4 |
10 g | 0.0011 | 0.015 | 0.005 | 0.006 | 0.010 | 0.010 | 0.1 | 0.2 |
5 g | 0.0009 | 0.001 | 0.003 | 0.004 | 0.007 | 0.007 | 0.07 | 0.15 |
3 g | 0.0014 | 0.001 | 0.003 |
|
|
|
|
|
2 g | 0.00075 | 0.001 | 0.003 | 0.004 | 0.006 | 0.006 | 0.05 | 0.11 |
1 g | 0.00054 | 0.0008 | 0.0025 | 0.004 | 0.006 | 0.006 | 0.04 | 0.09 |
500 mg | 0.00049 | 0.0005 | 0.0009 | 0.001 | 0.0025 | 0.0025 | 0.01 | 0.04 |
300 mg | 0.00072 | 0.0005 | 0.0009 |
|
|
|
| 0.04 |
200 mg | 0.00040 | 0.0005 | 0.0009 | 0.001 | 0.0025 | 0.0025 | 0.01 | 0.04 |
100 mg | 0.00040 | 0.0005 | 0.0009 | 0.001 | 0.0025 | 0.0025 | 0.01 | 0.04 |
50 mg | 0.00023 | 0.0005 | 0.0009 | 0.001 | 0.0025 | 0.0025 | 0.01 | 0.04 |
30 mg | 0.00020 | 0.0005 | 0.0009 |
|
|
|
|
|
20 mg | 0.00020 | 0.0005 | 0.0009 | 0.001 | 0.002 | 0.002 | 0.01 | 0.04 |
10 mg | 0.00020 | 0.0005 | 0.0009 | 0.001 | 0.002 | 0.002 | 0.01 | 0.04 |
5 mg | 0.00020 | 0.0005 | 0.0009 | 0.001 | 0.002 | 0.002 | 0.01 | 0.02 |
3 mg | 0.00020 | 0.0005 | 0.0009 |
|
|
|
|
|
2 mg | 0.00020 | 0.0005 | 0.0009 | 0.001 | 0.002 | 0.002 | 0.01 | 0.02 |
1 mg | 0.00020 | 0.0005 | 0.0009 | 0.001 | 0.002 | 0.002 | 0.01 | 0.02 |
0.5 mg | 0.00020 | 0.0005 | 0.0009 | 0.001 | 0.002 | 0.002 | 0.01 | 0.02 |
0.2 mg | 0.00020 | 0.0005 | 0.0009 | 0.001 | 0.002 | 0.002 | 0.01 | 0.02 |
0.1 mg | 0.00020 | 0.0005 | 0.0009 | 0.001 | 0.002 | 0.002 | 0.01 | 0.02 |
0.05 mg | 0.00020 | 0.0005 | 0.0009 | 0.001 | 0.002 | 0.002 | 0.01 | 0.02 |
Troemner Weight Uncertainty Chart
Troemner Ultra Class and NIST F
Nominal Value | Troemner CMC | UltraClass Platinum | UltraClass Gold | UltraClass | NIST F |
2000 kg |
|
|
|
| 50 g |
1000 kg |
|
|
|
| 25 |
500 kg |
|
|
|
| 12 |
200 kg |
|
|
|
| 5 |
100 kg |
|
|
|
| 2.5 |
50 kg | 2 mg | 6 mg | 12 mg | 21 mg | 500 mg |
30 kg | 1.2 | 3 | 6 | 12 | 300 |
25 kg | 0.97 | 3 | 3 | 10 | 250 |
20 kg | 0.76 | 2.5 | 5 | 8 | 200 |
10 kg | 0.37 | 1 | 2 | 4 | 100 |
5 kg | 0.18 | 0.5 | 1 | 3 | 50 |
3 kg | 0.11 | 0.5 | 1 | 1.2 | 30 |
2 kg | 0.072 | 0.25 | 0.5 | 0.8 | 20 |
1 kg | 0.035 | 0.15 | 0.3 | 0.4 | 10 |
500 g | 0.018 | 0.06 | 0.12 | 0.2 | 7 |
300 g | 0.012 | 0.06 | 0.12 | 0.12 | 6 |
200 g | 0.0073 | 0.025 | 0.05 | 0.08 | 4 |
100 g | 0.0038 | 0.01 | 0.02 | 0.04 | 2 |
50 g | 0.0022 | 0.007 | 0.014 | 0.02 | 1 |
30 g | 0.0026 | 0.007 | 0.014 | 0.012 | 0.6 |
20 g | 0.0013 | 0.006 | 0.012 | 0.01 | 0.4 |
10 g | 0.0011 | 0.005 | 0.01 | 0.008 | 0.2 |
5 g | 0.0009 | 0.003 | 0.006 | 0.005 | 0.15 |
3 g | 0.0014 | 0.003 | 0.006 | 0.005 | 0.13 |
2 g | 0.00075 | 0.003 | 0.006 | 0.005 | 0.11 |
1 g | 0.00054 | 0.0025 | 0.005 | 0.005 | 0.09 |
500 mg | 0.00049 | 0.0009 | 0.0009 | 0.001 | 0.04 |
300 mg | 0.00072 | 0.0009 | 0.0009 | 0.001 | 0.04 |
200 mg | 0.00040 | 0.0009 | 0.0009 | 0.001 | 0.04 |
100 mg | 0.00040 | 0.0009 | 0.0009 | 0.001 | 0.04 |
50 mg | 0.00023 | 0.0009 | 0.0009 | 0.001 | 0.04 |
30 mg | 0.00020 | 0.0009 | 0.0009 | 0.001 | 0.04 |
20 mg | 0.00020 | 0.0009 | 0.0009 | 0.001 | 0.04 |
10 mg | 0.00020 | 0.0009 | 0.0009 | 0.001 | 0.04 |
5 mg | 0.00020 | 0.0009 | 0.0009 | 0.001 | 0.02 |
3 mg | 0.00020 | 0.0009 | 0.0009 | 0.001 | 0.02 |
2 mg | 0.00020 | 0.0009 | 0.0009 | 0.001 | 0.02 |
1 mg | 0.00020 | 0.0009 | 0.0009 | 0.001 | 0.02 |
0.5 mg | 0.00020 | 0.0009 | 0.0009 | 0.001 | 0.02 |
0.2 mg | 0.00020 | 0.0009 | 0.0009 | 0.001 | 0.02 |
0.1 mg | 0.00020 | 0.0009 | 0.0009 | 0.001 | 0.02 |
0.05 mg | 0.00020 | 0.0009 | 0.0009 | 0.001 | 0.02 |
* E0 is a theoretical tolerance that is 50% of OIML R 111 Class E1