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Home  >  Balances & Scales > Calibration Masses

Calibration Masses

Calibration Masses

For precision weighing, select from either electronic or precision analytical balance masses. Electronic balance masses are cylindrical shaped for easy stacking on balance weighing pans. Precision analytical masses feature two-piece construction and consist of a special austenitic alloy for high precision and stability. Both groups of masses meet ASTM Class 1 or ASTM Class 4 standards, and are available with either a *NVLAP Lab Code 105013-0 (National Voluntary Laboratory Accreditation Program) or traceable certificate. For commercial applications, choose an NIST Class F weight. Use the descriptions below to select the best calibration class for your application.

UltraClass—With weight tolerances 50% greater than ASTM E617 Class 1 tolerances, these weights combine high precision with the advantage of two-piece construction (1 g and larger), avoiding costly replacement issues associated with one-piece weights

ASTM Class 1—Appropriate for calibrating high-precision analytical balances with a readability as low as 0.1 mg to 0.01 mg

ASTM Class 4—For calibration of semi-analytical balances and for student use

NIST Class F—Primarily used to test commercial weighing devices by state and local weights and measures officials, device installers, and service technicians. Class F weights may be used to test most accuracy Class III scales, all scales of Class III L or IIII, and scales not marked with a class designation

ASTM Class 6—Meet the specifications of OIML R 111 Class M2
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EW-11954-62 Group image shown

ASTM Class 1 Mass with Weight Calibration Certificate, 20 kg

Product Type Calibration Mass,Class Class 1,Mass kg 20
EW-11954-62
Call 1-888-358-4705 for availability.
$1,436.00 USD/EACH

Qty:
Representative photo only Rice Lake Class 1 Calibration Weight Set 100 g 1 mg

Rice Lake Class 1 Calibration Weight Set 100 g - 1 mg

Product Type Calibration Mass,Class Class 1,Model 11897CR
EW-10151-11
Usually ships in 9 days.
$1,775.00 USD/EACH

Qty:
Representative photo only Precision UltraClass mass set 500 g to 1 mg

Precision UltraClass™ mass set, 500 g to 1 mg

Product Type Calibration Mass,Class UltraClass,Mass g 500
EW-01026-59
Call 1-888-358-4705 for availability.
$2,205.00 USD/EACH

Qty:
Representative photo only Class F Calibration Mass 10 kg

Class F Calibration Mass, 10 kg

Product Type Calibration Mass,Class Class F,Mass kg 10
EW-01025-72
In stock.
$106.00 USD/EACH

Qty:
Representative photo only Cast Iron Grip Handle w Traceable certificate

Cast Iron Grip Handle w/ Traceable certificate

Product Type Calibration Mass,Class Class F,Mass lbs 25
EW-11966-54
Usually ships in 15 days or sooner.
$176.00 USD/EACH

Qty:
Representative photo only S S Weight Set Ultra Class 500 g 1 mg with Certificate

S.S.Weight Set, Ultra Class, 500 g-1 mg with Certificate

Product Type Calibration Mass,Class UltraClass,Mass g 500
EW-01027-59
Call 1-888-358-4705 for availability.
$3,565.00 USD/EACH

Qty:
EW-01035-00 Laboratory Mass Set, 1g, 2g (two), 5g, 10g, 20g (two)

Laboratory Mass Set, Set of 13 masses

Product Type Calibration Mass Sets,Model 213-16
EW-01035-00
In stock.
$145.00 USD/SET of 1

Qty:
Representative photo only 200g 2g Troemner Cal pak Class 1 With Certificate

200g-2g Troemner Cal-pak Class 1 With Certificate

Product Type Calibration Mass,Class Class 1,Brand Troemner
EW-11967-09
Usually ships in 14 days or sooner.
$376.00 USD/EACH

Qty:
EW-11954-47 Group image shown

ASTM Class 1 Mass with Weight Calibration Certificate, 2000 g

Product Type Calibration Mass,Class Class 1,Mass g 2000
EW-11954-47
Call 1-888-358-4705 for availability.
$299.00 USD/EACH

Qty:
Representative photo only Precision ASTM Class 1 calibration mass set with an ISO IEC 17025 2005 accredited certificate 200 g to 1 mg

Precision ASTM Class 1 calibration mass set with an ISO/IEC 17025:2005-accredited certificate, 200 g to 1 mg

Product Type Calibration Mass,Class Class 1,Mass g 200
EW-11957-53
Call 1-888-358-4705 for availability.
$2,202.00 USD/EACH

Qty:
EW-11954-20 Group image shown

ASTM Class 1 Mass with Weight Calibration Certificate, 100 g

Product Type Calibration Mass,Class Class 1,Mass g 100
EW-11954-20
In stock.
$145.00 USD/EACH

Qty:
Representative photo only Rice Lake Weighing Systems Calibration Weight Sets 100 g 1 mg

Rice Lake Weighing Systems Calibration Weight Sets, 100 g - 1 mg

Product Type Calibration Mass,Class Class 4,Model 12401TR
EW-10151-21
Usually ships in 10 days.
$1,220.00 USD/EACH

Qty:
Representative photo only Precision ASTM Class 1 calibration mass set with an ISO IEC 17025 2005 accredited certificate 100 g to 10 mg

Precision ASTM Class 1 calibration mass set with an ISO/IEC 17025:2005-accredited certificate, 100 g to 10 mg

Product Type Calibration Mass,Class Class 1,Mass g 100
EW-11957-80
Call 1-888-358-4705 for availability.
$1,782.00 USD/EACH

Qty:
Representative photo only ASTM Class 1 Mass 20 kg

ASTM Class 1 Mass, 20 kg

Product Type Calibration Mass,Class Class 1,Mass kg 20
EW-01025-62
Call 1-888-358-4705 for availability.
$1,278.00 USD/EACH

Qty:
Representative photo only Class 1 calibration mass with certificate of calibration 500 g

Class 1 calibration mass with certificate of calibration, 500 g

Product Type Calibration Mass,Class Class 1,Mass g 500
EW-10150-09
Usually ships in 8 days.
$250.00 USD/EACH

Qty:
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