Precision Test Weights with Calibration Certificate
Often used to calibrate precision scales, these highly accurate test weights come with a certificate of calibration traceable to NIST that states they’ve passed a test for accuracy. They are marked with their weight.
Class 1 weights are highly accurate and used as a reference standard for calibrating other calibration weights. They are also good for calibration of microbalances and analytical balances.
| Wt. | Tolerance | Dia. | Ht. | Material | Specifications Met | Includes | Each | |
Class 1 | ||||||||
|---|---|---|---|---|---|---|---|---|
| 30 g | -0.000074 g to 0.000074 g | 3/4" | 5/8" | Stainless Steel | ASTM E617 Class 1 | Glove, Plastic Case | 00000000 | 0000000 |
| 40 g | -0.000074 g to 0.000074 g | 3/4" | 13/16" | Stainless Steel | ASTM E617 Class 1 | Glove, Plastic Case | 00000000 | 000000 |
| 50 g | -0.000097 g to 0.000097 g | 3/4" | 1" | Stainless Steel | ASTM E617 Class 1 | Glove, Plastic Case | 00000000 | 000000 |
| 100 g | -0.00025 g to 0.00025 g | 1" | 1 1/16" | Stainless Steel | ASTM E617 Class 1 | Glove, Plastic Case | 00000000 | 000000 |
| 150 g | -0.000375 g to 0.000375 g | 1 1/8" | 1 3/16" | Stainless Steel | ASTM E617 Class 1 | Glove, Plastic Case | 00000000 | 000000 |
| 200 g | -0.0005 g to 0.0005 g | 1 3/16" | 1 9/16" | Stainless Steel | ASTM E617 Class 1 | Glove, Plastic Case | 00000000 | 000000 |
| 300 g | -0.00075 g to 0.00075 g | 1 1/2" | 1 1/2" | Stainless Steel | ASTM E617 Class 1 | Glove, Plastic Case | 00000000 | 000000 |
| 400 g | -0.000975 g to 0.000975 g | 1 1/2" | 1 7/8" | Stainless Steel | ASTM E617 Class 1 | Glove, Plastic Case | 00000000 | 000000 |
| 500 g | -0.0012 g to 0.0012 g | 1 1/2" | 2 5/16" | Stainless Steel | ASTM E617 Class 1 | Glove, Plastic Case | 00000000 | 000000 |
| 1,000 g | -0.0025 g to 0.0025 g | 2" | 2 9/16" | Stainless Steel | ASTM E617 Class 1 | Glove, Plastic Case | 00000000 | 000000 |
| 2 kg | -0.000005 kg to 0.000005 kg | 2 1/2" | 3 5/16" | Stainless Steel | ASTM E617 Class 1 | Glove, Plastic Case | 00000000 | 000000 |
| 4 kg | -0.000975 kg to 0.000975 kg | 3" | 4 9/16" | Stainless Steel | ASTM E617 Class 1 | Glove, Plastic Case | 00000000 | 000000 |
| 5 kg | -0.000012 kg to 0.000012 kg | 3 1/4" | 4 7/8" | Stainless Steel | ASTM E617 Class 1 | Glove, Plastic Case | 00000000 | 000000 |
Precision Test Weights
Our most accurate test weights, these are often used to calibrate precision scales. They are marked with their weight.
For technical drawings and 3-D models, click on a part number.
| Wt. | Tolerance | Dia. | Ht. | Material | Class | Specifications Met | Includes | Each | |
| 30 g | -0.000074 g to 0.000074 g | 3/4" | 5/8" | Stainless Steel | 1 | ASTM E617 Class 1 | Glove; Plastic Case | 00000000 | 0000000 |
| 50 g | -0.000097 g to 0.000097 g | 3/4" | 1" | Stainless Steel | 1 | ASTM E617 Class 1 | Glove; Plastic Case | 00000000 | 000000 |
| 100 g | -0.00025 g to 0.00025 g | 1" | 1 1/16" | Stainless Steel | 1 | ASTM E617 Class 1 | Glove; Plastic Case | 00000000 | 000000 |
| 150 g | -0.000375 g to 0.000375 g | 1 1/8" | 1 3/16" | Stainless Steel | 1 | ASTM E617 Class 1 | Glove; Plastic Case | 00000000 | 000000 |
| 200 g | -0.0005 g to 0.0005 g | 1 3/16" | 1 9/16" | Stainless Steel | 1 | ASTM E617 Class 1 | Glove; Plastic Case | 00000000 | 000000 |
| 300 g | -0.00075 g to 0.00075 g | 1 1/2" | 1 1/2" | Stainless Steel | 1 | ASTM E617 Class 1 | Glove; Plastic Case | 00000000 | 000000 |
| 400 g | -0.000975 g to 0.000975 g | 1 1/2" | 1 7/8" | Stainless Steel | 1 | ASTM E617 Class 1 | Glove; Plastic Case | 00000000 | 000000 |
| 500 g | -0.0012 g to 0.0012 g | 1 1/2" | 2 5/16" | Stainless Steel | 1 | ASTM E617 Class 1 | Glove; Plastic Case | 00000000 | 000000 |
| 1,000 g | -0.0025 g to 0.0025 g | 2" | 2 9/16" | Stainless Steel | 1 | ASTM E617 Class 1 | Glove; Plastic Case | 00000000 | 000000 |
| 2 kg | -0.000005 kg to 0.000005 kg | 2 1/2" | 3 5/16" | Stainless Steel | 1 | ASTM E617 Class 1 | Glove; Plastic Case | 00000000 | 000000 |
| 4 kg | -0.000975 kg to 0.000975 kg | 3" | 4 9/16" | Stainless Steel | 1 | ASTM E617 Class 1 | Glove; Plastic Case | 00000000 | 000000 |
| 5 kg | -0.000012 kg to 0.000012 kg | 3 1/4" | 4 7/8" | Stainless Steel | 1 | ASTM E617 Class 1 | Glove; Plastic Case | 00000000 | 000000 |
Precision Test Weight Sets with Calibration Certificate
These highly accurate test weight sets for calibrating precision scales come with a certificate of calibration traceable to NIST that states they’ve passed a test for accuracy. Each test weight is marked with its weight.
Class 1 weights are highly accurate and used as a reference standard for calibrating other calibration weights. They are also good for calibration of microbalances and analytical balances.
| Number of Pieces | Includes | Material | Specifications Met | Each | |
Class 1 | |||||
|---|---|---|---|---|---|
| 9 | Test Weights (1 each): 1 g, 5 g, 10 g, 50 g, 100 g Test Weights (2 each): 2 g, 20 g Plastic Case | Stainless Steel | ASTM E617 Class 1 | 0000000 | 000000000 |
| 17 | Test Weights (1 each): 10 mg, 50 mg, 100 mg, 500 mg, 1 g, 5 g, 10 g, 50 g, 100 g Test Weights (2 each): 20 mg, 200 mg, 2 g, 20 g Plastic Case | Stainless Steel | ASTM E617 Class 1 | 0000000 | 00000000 |
| 21 | Test Weights (1 each): 1 mg, 5 mg, 10 mg, 50 mg, 100 mg, 500 mg, 1 g, 5 g, 10 g, 50 g, 100 g Test Weights (2 each): 2 mg, 20 mg, 200 mg, 2 g, 20 g Plastic Case | Aluminum, Stainless Steel | ASTM E617 Class 1 | 0000000 | 00000000 |
Precision Test Weight Sets
Use these highly accurate test weight sets to calibrate precision scales. Each test weight is marked with its weight.
| Number of Pieces | Includes | Material | Class | Specifications Met | Each | |
| 9 | Test Weights (1 each): 1 g, 5 g, 10 g, 50 g, 100 g Test Weights (2 each): 2 g, 20 g Plastic Case | Stainless Steel | 1 | ASTM E617 Class 1 | 0000000 | 0000000 |
| 17 | Test Weights (1 each): 10 mg, 50 mg, 100 mg, 500 mg, 1 g, 5 g, 10 g, 50 g, 100 g Test Weights (2 each): 20 mg, 200 mg, 2 g, 20 g Plastic Case | Stainless Steel | 1 | ASTM E617 Class 1 | 0000000 | 00000000 |
| 21 | Test Weights (1 each): 1 mg, 5 mg, 10 mg, 50 mg, 100 mg, 500 mg, 1 g, 5 g, 10 g, 50 g, 100 g Test Weights (2 each): 2 mg, 20 mg, 200 mg, 2 g, 20 g Plastic Case | Aluminum, Stainless Steel | 1 | ASTM E617 Class 1 | 0000000 | 00000000 |