Precision Test Weights

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47 Products

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.

Calibration Weight Class 1—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.

Calibration Weight Class 4—Class 4 weights are good for calibrating precision balances, laboratory balances, and digital scales.

	Wt. Tolerance	Dia.	Ht.	Material	Specs. Met	Includes	Certificate Type		Each
Calibration Weight Class 1



	30 g	-0.000074 g to 0.000074 g	3/4"	5/8"	Stainless Steel	ASTM E617 Class 1	Glove Plastic case	Calibration Certificate Traceable to NIST	17605T21	0000000


	40 g	-0.000074 g to 0.000074 g	3/4"	13/16"	Stainless Steel	ASTM E617 Class 1	Glove Plastic case	Calibration Certificate Traceable to NIST	17605T22	000000
	50 g	-0.000097 g to 0.000097 g	3/4"	1"	Stainless Steel	ASTM E617 Class 1	Glove Plastic case	Calibration Certificate Traceable to NIST	17605T23	000000
	100 g	-0.00025 g to 0.00025 g	1"	1 1/16"	Stainless Steel	ASTM E617 Class 1	Glove Plastic case	Calibration Certificate Traceable to NIST	17605T24	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	Calibration Certificate Traceable to NIST	17605T25	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	Calibration Certificate Traceable to NIST	17605T26	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	Calibration Certificate Traceable to NIST	17605T27	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	Calibration Certificate Traceable to NIST	17605T28	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	Calibration Certificate Traceable to NIST	17605T29	000000
	1,000 g	-0.0025 g to 0.0025 g	2"	2 9/16"	Stainless Steel	ASTM E617 Class 1	Glove Plastic case	Calibration Certificate Traceable to NIST	17605T61	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	Calibration Certificate Traceable to NIST	17605T62	000000


	4 kg	-0.000975 kg to 0.000975 kg	3"	4 9/16"	Stainless Steel	ASTM E617 Class 1	Glove Plastic case	Calibration Certificate Traceable to NIST	17605T63	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	Calibration Certificate Traceable to NIST	17605T64	000000


	Calibration Weight Class 4



			30 g	-0.009 g to 0.009 g	3/4"	5/8"	Stainless Steel	ASTM E617 Class 4	Glove Plastic case	Calibration Certificate Traceable to NIST	17605T101	000000


			40 g	-0.00105 g to 0.00105 g	3/4"	13/16"	Stainless Steel	ASTM E617 Class 4	Glove Plastic case	Calibration Certificate Traceable to NIST	17605T102	000000
			50 g	-0.0012 g to 0.0012 g	3/4"	1"	Stainless Steel	ASTM E617 Class 4	Glove Plastic case	Calibration Certificate Traceable to NIST	17605T103	000000
			100 g	-0.002 g to 0.002 g	1"	1 1/16"	Stainless Steel	ASTM E617 Class 4	Glove Plastic case	Calibration Certificate Traceable to NIST	17605T104	000000
			150 g	-0.003 g to 0.003 g	1 1/8"	1 3/16"	Stainless Steel	ASTM E617 Class 4	Glove Plastic case	Calibration Certificate Traceable to NIST	17605T105	000000
			200 g	-0.004 g to 0.004 g	1 3/16"	1 9/16"	Stainless Steel	ASTM E617 Class 4	Glove Plastic case	Calibration Certificate Traceable to NIST	17605T106	000000
			300 g	-0.006 g to 0.006 g	1 7/16"	1 7/16"	Stainless Steel	ASTM E617 Class 4	Glove Plastic case	Calibration Certificate Traceable to NIST	17605T107	000000
			400 g	-0.008 g to 0.008 g	1 7/16"	1 15/16"	Stainless Steel	ASTM E617 Class 4	Glove Plastic case	Calibration Certificate Traceable to NIST	17605T108	000000
			500 g	-0.01 g to 0.01 g	1 1/2"	2 5/16"	Stainless Steel	ASTM E617 Class 4	Glove Plastic case	Calibration Certificate Traceable to NIST	17605T109	000000
			1,000 g	-0.02 g to 0.02 g	2"	2 9/16"	Stainless Steel	ASTM E617 Class 4	Glove Plastic case	Calibration Certificate Traceable to NIST	17605T111	000000
			2 kg	-0.00004 kg to 0.00004 kg	2 1/2"	3 5/16"	Stainless Steel	ASTM E617 Class 4	Glove Plastic case	Calibration Certificate Traceable to NIST	17605T112	000000


			4 kg	-0.00008 kg to 0.00008 kg	3"	4 9/16"	Stainless Steel	ASTM E617 Class 4	Glove Plastic case	Calibration Certificate Traceable to NIST	17605T114	000000
			5 kg	-0.0001 kg to 0.0001 kg	3 3/16"	4 7/8"	Stainless Steel	ASTM E617 Class 4	Glove Plastic case	Calibration Certificate Traceable to NIST	17605T113	000000


30 g to 500 g	1,000 g to 5 kg

Our most accurate test weights, these are often used to calibrate precision scales. They are marked with their weight.

Wt.	Wt. Tolerance	Dia.	Ht.	Material	Calibration Wt. Class	Specs. 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	17605T31	0000000
50 g	-0.000097 g to 0.000097 g	3/4"	1"	Stainless Steel	1	ASTM E617 Class 1	Glove Plastic case	17605T33	000000
100 g	-0.00025 g to 0.00025 g	1"	1 1/16"	Stainless Steel	1	ASTM E617 Class 1	Glove Plastic case	17605T34	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	17605T35	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	17605T36	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	17605T37	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	17605T38	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	17605T39	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	17605T41	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	17605T42	000000
4 kg	-0.000975 kg to 0.000975 kg	3"	4 9/16"	Stainless Steel	1	ASTM E617 Class 1	Glove Plastic case	17605T43	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	17605T44	000000

Precision Test Weight Sets with Calibration Certificate


21-Piece Set	17-Piece Set	9-Piece Set

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.

Calibration Weight Class 4—Class 4 weights are good for calibrating precision balances, laboratory balances, and digital scales.

	Includes	Material	Specs. Met	Certificate Type		Each
Calibration Weight 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	Calibration Certificate Traceable to NIST	9049T21	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	Calibration Certificate Traceable to NIST	9049T22	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	Calibration Certificate Traceable to NIST	9049T23	00000000


	Calibration Weight Class 4



			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 4	Calibration Certificate Traceable to NIST	9049T33	000000


			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 4	Calibration Certificate Traceable to NIST	9049T32	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 4	Calibration Certificate Traceable to NIST	9049T31	00000000

Precision Test Weight Sets


9-Piece Set	17-Piece Set	21-Piece Set

Use these highly accurate test weight sets to calibrate precision scales. Each test weight is marked with its weight.

No. of Pieces	Includes	Material	Calibration Wt. Class	Specs. 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	9049T11	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	9049T12	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	9049T13	00000000