Manufactured to international standards (ASTM and OIML), Ohaus loose calibrations weights and calibration mass sets are available in a variety of styles for a wide range of uses.
In addition to the conventional shapes, Ohaus also offers hooked and slotted masses for use in physics. Calibration weights for the continuous accuracy of your electronic balances are available from 1 mg to 50 kg.
Also see
Calibration Weight Sets - ASTM Class 1 (Metric)
| Item # without Certificate |
80781021 |
80781023 |
80781025 |
80781027 |
80781029 |
80781031 |
80781033 |
| Price withouth Cerfificate |
$387.00
|
$662.40
|
$401.40
|
$697.50
|
$462.60
|
$797.40
|
$528.30
|
| Item # with Certificate |
80781022 |
80781024 |
80781026 |
80781028 |
80781030 |
80781032 |
80781034 |
Price with Traceable Certificate |
$713.70
|
$1279.80
|
$697.50
|
$1379.70
|
$747.90
|
$1581.30
|
$888.30
|
| Set includes |
(1) 1 mg, (2) 2 mg, (1) 5 mg, (1) 10 mg, (2) 20 mg, (1) 50 mg, (1) 100 mg, (2) 200 mg, (1) 500 mg, tweezers, case & foam packaging for each weight |
(1) 1 mg, (2) 2 mg, (1) 5 mg, (1) 10 mg, (2) 20 mg, (1) 50 mg, (1) 100 mg, (2) 200 mg, (1) 500 mg, (1) 1 g, (1) 2 g, (1) 5 g, (1)10 g, (2) 20 g, (1) 50 g, tweezers, case & foam packaging for each weight |
(1) 1 g, (2) 2 g, (1) 5 g, (1) 10 g, (2) 20 g, (1) 50 g, tweezers, case & foam packaging for each weight |
(1) 1 mg, (2) 2 mg, (1) 5 mg, (1) 10 mg, (2) 20 mg, (1) 50 mg, (1) 100 mg, (2) 200 mg, (1) 500 mg, (1) 1 g, (2) 2 g, (1) 5 g, (1) 10 g, (2) 20 g, (1) 50 g, (1) 100 g, tweezers, case & foam packaging for each weight |
(1) 1 g, (2) 2 g, (1) 5 g, (1) 10 g, (2) 20 g, (1) 50 g, (1) 100 g, tweezers, case & foam packaging for each weight |
(1) 1 mg, (2) 2 mg, (1) 5 mg, (1) 10 mg, (2) 20 mg, (1) 50 mg, (1) 100 mg, (2) 200 mg, (1) 500 mg, (1) 1 g, (2) 2 g, (1) 5 g, (1) 10 g, (2) 20 g, (1) 50 g, (1) 100 g, (1) 200 g, tweezers, case & foam packaging for each weight |
(1) 1 g, (2) 2 g, 1 x 5 g, (1) 10 g, (2) 20 g, (1) 50 g, (1) 100 g, (2) 200 g, tweezers, case & foam packaging for each weight |
| Adjusted to tolerance class |
ASTM Class 1 |
| Material |
Stainless Steel |
Individual Calibration Weights - ASTM Class 1 (Metric)
| Weight |
1 mg |
2 mg |
5 mg |
10 mg |
20 mg |
50 mg |
100 mg |
200 mg |
500 mg |
| Item Number without Certificate |
80781101 |
80781103 |
80781107 |
80781109 |
80781111 |
80781115 |
80781117 |
80781119 |
80781123 |
| Price without Certificate |
$45
|
$45
|
$45
|
$45
|
$45
|
$45
|
$45
|
$45
|
$45
|
| Item Number with Certificate |
80781102 |
80781104 |
80781108 |
80781110 |
80781112 |
80781116 |
80781118 |
80781120 |
80781124 |
Price with Traceable Certificate |
$81
|
$81
|
$81
|
$81
|
$81
|
$81
|
$81
|
$81
|
$81
|
| Adjusted to tolerance class |
ASTM Class 1 |
| Material |
Stainless Steel |
| Weight |
1 g |
2 g |
5 g |
10 g |
20 g |
50 g |
100 g |
200 g |
| Item Number without Certificate |
80781125 |
80781127 |
80781131 |
80781133 |
80781135 |
80781139 |
80781141 |
80781143 |
| Price without Certificate |
$45
|
$45
|
$45
|
$45
|
$45
|
$52.20
|
$62.10
|
$99.90
|
| Item Number withCertificate |
80781126 |
80781128 |
80781132 |
80781134 |
80781136 |
80781140 |
80781142 |
80781144 |
Price with Traceable Certificate |
$81
|
$81
|
$81
|
$84.60
|
$88.20
|
$92.70
|
$99.90
|
$172.80
|
| Adjusted to tolerance class |
ASTM Class 1 |
| Material |
Stainless Steel |
| Weight |
400 g |
500 g |
1 kg |
2 kg |
4 kg |
| Item Number without Certificate |
49045-11 |
49055-11 |
49016-11 |
49026-11 |
49046-11 |
| Price without Certificate |
$87.30
|
$94.50
|
$125.10
|
$155.70
|
$248.40
|
| Item Number with Certificate |
49045-11/C |
49055-11/C |
49016-11/C |
49026-11/C |
49046-11/C |
Price with Traceable Certificate |
$172.80
|
$174.60
|
$207.00
|
$267.30
|
$350.10
|
| Adjusted to tolerance class |
ASTM Class 1 |
| Material |
Stainless Steel |
| Weight |
5 kg |
10 kg |
20 kg |
30 kg |
| Item Number without Certificate |
80781001 |
80781003 |
80781005 |
80781007 |
| Price without Certificate |
$387.50
|
$562.50
|
$828.90
|
$1134.00
|
| Item Number without Certificate |
80781002 |
80781004 |
80781006 |
80781008 |
Price with Traceable Certificate |
$517.50
|
$667.80
|
$969.30
|
$1405.80
|
| Adjusted to tolerance class |
ASTM Class 1 |
| Material |
Stainless Steel |
Calibration Weight Sets - ASTM Class 4 (Metric)
| Item Number without Certificate |
290-00 |
291-01 |
292-01 |
| Photo |
 |
 |
 |
| Price without Certificate |
$196.20
|
$367.20
|
$347.40
|
| Item Number with Certificate |
290-00/C |
291-01/C |
292-01/C |
Price with Traceable Certificate |
$483.30
|
$879.30
|
$954.00
|
| Set includes |
(1) 500 mg, (2) 200 mg, (1) 100 mg, (1) 50 mg, (2) 20 mg, (1) 10 mg, (1) 5 mg, (2) 2 mg, (1) 1 mg, tweezers and carrying case |
(1) 50 g, (1) 30 g, (1) 20 g, (1) 10 g, (1) 5 g, (1) 3 g, (1) 2 g, (1) 1 g, (1) 500 mg, (1) 200 mg, (1) 100 mg, (1) 50 mg, (2) 20 mg, (1) 10 mg, (1) 5 mg, (2) 2 mg, (1) 1 mg, tweezers and carrying case |
(1) 100 g, (1) 50 g, (1) 30 g, (1) 20 g, (1) 10 g, (1) 5 g, (1) 3 g, (1) 2 g, (1) 1 g, (1) 500 mg, (2) 200 mg, (1) 100 mg, (1) 50 mg, (2) 20 mg, (1) 10 mg, (1) 5 mg, (2) 2 mg, (1) 1 mg, tweezers and carrying case |
| Adjusted to tolerance class |
ASTM Class 4 |
| Material |
Stainless Steel |
Individual Calibration Weights - ASTM Class 4 (Metric)
| Weight |
1 mg |
2 mg |
5 mg |
10 mg |
20 mg |
50 mg |
100 mg |
200 mg |
| Item Number without Certificate |
53010-00 |
53020-00 |
53050-00 |
53011-00 |
53021-00 |
53051-00 |
53012-00 |
53022-00 |
| Price |
$18.90
|
$18.90
|
$18.90
|
$18.90
|
$18.90
|
$18.90
|
$18.90
|
$18.90
|
| Item Number with Certificate |
53010-00/C |
53020-00/C |
53050-00/C |
53011-00/C |
53021-00/C |
53051-00/C |
53012-00/C |
53022-00/C |
Price with Traceable Certificate |
$62.10
|
$62.10
|
$62.10
|
$62.10
|
$63.00
|
$63.00
|
$63.00
|
$63.00
|
| Adjusted to tolerance class |
ASTM Class 4 |
| Material |
Aluminum |
| Weight |
500 mg |
1 g |
2 g |
3 g |
5 g |
10 g |
20 g |
30 g |
50 g |
| Item Number without Certificate |
53052-00 |
53013-00 |
53023-00 |
53033-00 |
53053-00 |
53014-00 |
53024-00 |
53034-00 |
53054-00 |
| Price |
$18.90
|
$28.80
|
$28.80
|
$28.80
|
$28.80
|
$31.50
|
$36.00
|
$40.50
|
$40.50
|
| Item Number with Certificate |
53052-00/C |
53013-00/C |
53023-00/C |
|
53053-00/C |
53014-00/C |
53024-00/C |
|
53054-00/C |
Price with Traceable Certificate |
$63.00
|
$74.70
|
$74.70
|
|
$74.70
|
$76.50
|
$79.20
|
|
$84.60
|
| Adjusted to tolerance class |
ASTM Class 4 |
| Material |
Stainless Steel |
Individual Calibration Weights - ASTM Class 6 (Metric)
| Weight |
1 mg |
2 mg |
5 mg |
10 mg |
20 mg |
50 mg |
100 mg |
200 mg |
500 mg |
| Item Number without Certificate |
51010-00 |
51020-00 |
51050-00 |
51011-00 |
51021-00 |
51051-00 |
51012-00 |
51022-00 |
51052-16 |
| Price without Certificate |
$8.10
|
$8.10
|
$8.10
|
$8.10
|
$8.10
|
$8.10
|
$8.10
|
$8.10
|
$8.10
|
| Item Number with Certificate |
51010-00/C |
51020-00/C |
51050-00/C |
51011-00/C |
51021-00/C |
51051-00/C |
51012-00/C |
51022-00/C |
51052-16/C |
Price with Traceable Certificate |
$20.70
|
$20.70
|
$20.70
|
$20.70
|
$20.70
|
$20.70
|
$20.70
|
$20.70
|
$20.70
|
| Adjusted to tolerance class |
ASTM Class 6 / NIST Class C |
| Material |
Aluminum |
Stainless Steel |
| Weight |
1 g |
2 g |
5 g |
10 g |
20 g |
50 g |
| Item Number without Certificate |
51013-16 |
51023-16 |
51053-16 |
51014-16 |
51024-16 |
51054-16 |
| Price without Certificate |
$7.20
|
$7.20
|
$7.20
|
$7.20
|
$7.20
|
$8.10
|
| Item Number with Certificate |
51013-16/C |
51023-16/C |
51053-16/C |
51014-16/C |
51024-16/C |
51054-16/C |
Price with Traceable Certificate |
$18.90
|
$18.90
|
$18.90
|
$18.90
|
$18.90
|
$18.90
|
| Adjusted to tolerance class |
ASTM Class 6 / OIML M2 |
| Material |
Brass |
| Weight |
100 g |
200 g |
300 g |
500 g |
1000 g |
2000 g |
5 kg |
10 kg |
20 kg |
25 kg |
50 kg |
| Item Number without Certificate |
51015-16 |
51025-16 |
51035-16 |
51055-16 |
51016-16 |
51026-16 |
77491-05 |
77491-10 |
77491-20 |
77491-25 |
77491-50 |
| Price without Certificate |
|
|
|
|
|
|
|
|
|
|
|
| Item Number without Certificate |
51015-16/C |
51025-16/C |
51035-16/C |
51055-16/C |
51016-16/C |
51026-16/C |
Certificates are not available for these models |
| Price with Traceable Certificate |
|
|
|
|
|
|
| Class |
NIST Class 6 |
Class F |
| Material |
Brass |
Cast Iron |
Individual Calibration Weights - Class F (Avoirdupois)
| Weight |
5 lb |
10 lb |
20 lb |
25 lb |
50 lb |
100 lb |
| Item Number |
77492-05 |
77492-10 |
77492-20 |
77492-25 |
77492-50 |
77492-95 |
| Price |
$65.70
|
$74.70
|
$93.60
|
$108.00
|
$121.50
|
$277.20
|
| Class |
Class F |
| Material |
Cast Iron |
Calibration Mass Sets - Class 6 (Metric)
| Mass Sets |
500 mg x 1 mg |
50 g x 10 mg |
100 g x 1 mg |
200 g x 1 mg |
500 g x 1 g |
1000 g x 1 g |
2000 g x 1 g |
| Item Number without Certificate |
218-16 |
241-16 |
211-16 |
214-16 |
212-16 |
201-16 |
238-16 |
| Price |
$39.60
|
$43.20
|
$53.10
|
$56.70
|
$60.30
|
$83.70
|
$162.90
|
| Item Number with Certificate |
218-16/C |
241-16/C |
211-16/C |
214-16/C |
212-16/C |
|
|
Price with Traceable Certificate |
$140.40
|
$143.10
|
$154.80
|
$159.30
|
$154.80
|
|
|
| Adjusted to tolerance class |
Class 6 |
| Material |
Brass |
| Case type |
Case with lid |
Open Block |
| Included in Set |
Milligrams:
(1) 500, (2) 200, (1) 100, (1) 50, (2) 20, (1) 10, (1) 5, (2) 2, (1) 1, and forceps |
Grams:
(1) 50, (1) 20, (2) 10, (1) 5, (2) 2, (1) 1
Milligrams:
(1) 500, (2) 200, (1) 100, (1) 50, (2) 20, (1) 10, and forceps |
Grams:
(1) 100, (1) 50, (1) 20, (2) 10, (1) 5, (2) 2, (1) 1
Milligrams:
(1) 500, (2) 200, (1) 100, (1) 50, (2) 20, (1) 10, (1) 5, (2) 2, (1) 1, and forceps |
Grams:
(1) 200, (1) 100, (1) 50, (1) 20, (2) 10, (1) 5, (2) 2, (1) 1
Milligrams:
(1) 500, (2) 200, (1) 100, (1) 50, (2) 20, (1) 10, (1) 5, (2) 2, (1) 1, and forceps |
Grams:
(1) 500, (2) 200, (1) 100, (1) 50, (2) 20, (1) 10, (1) 5, (2) 2, (1) 1
|
Grams:
(1) 1000, (1) 500, (1) 200, (2) 100, (1) 50, (1) 20, (2) 10, (1) 5, (2) 2, (1) 1
|
Grams:
(1) 2000, (1) 1000, (1) 500, (2) 200, (1) 100, (1) 50, (2) 20, (1) 10, (1) 5, (2) 2, (1) 1 |
| |
click here for picture |
click here for picture |
click here for picture |
click here for picture |
click here for picture |
click here for picture |
click here for picture |
| Item Number |
218-16 |
241-16 |
211-16 |
214-16 |
212-16 |
201-16 |
238-16 |
|
