Calibration Weights

Calibration weights provide known reference masses for checking and calibrating weighing equipment. Used by laboratory, quality-control, and technical teams, these weights support routine balance accuracy checks, scale verification, and measurement procedures from low-mass micro balance work to higher-capacity balance applications.

Product Display:
Helpful Buying Guide

Choose Calibration Weights for Your Weighing Procedure

The available calibration weights include stainless steel reference masses in cylindrical and leaf-style forms. Compare the mass needed for your equipment, the ASTM class required by your procedure, the weight form, and any stated balance compatibility before choosing.

Visual Guide

Popular examples in this category

1 g Stainless Steel Cylindrical Calibration Weight, ASTM Class 51 g Stainless Steel Cylindrical Calibration Weight, ASTM Class 5WBB14484575,000 g Stainless Steel Cylindrical Calibration Weight, ASTM Class 35,000 g Stainless Steel Cylindrical Calibration Weight, ASTM Class 3WBB5031311000 g Stainless Steel Cylindrical Calibration Weight, ASTM Class 21000 g Stainless Steel Cylindrical Calibration Weight, ASTM Class 2WBB503121500 g Stainless Steel Cylindrical Calibration Weight, ASTM Class 1500 g Stainless Steel Cylindrical Calibration Weight, ASTM Class 1WBB503120
Use Cases

Check and calibrate weighing equipment

Use known reference masses to verify compatible scales and balances, check balance performance, and support routine calibration work.

How to Choose

Match mass, class, and equipment

Start with the reference mass your procedure requires, then choose the ASTM class and confirm any stated compatibility with your balance.

Applications

From micro balances to laboratory balances

Leaf-style 100 mg weights support low-mass work, while cylindrical weights cover reference masses from 1 g through 5,000 g for balance and scale checks.

Additional Information

Stainless steel construction

The represented weights use stainless steel construction, a durable material choice for repeated handling during calibration and weighing tasks.

100 mgLowest represented mass

Leaf-style reference weight for low-mass calibration and verification work.

5,000 gHighest represented mass

Cylindrical reference weight specified for use with PGL balances.

Classes 0–5ASTM classes represented

Options span ASTM Class 0, 1, 2, 3, and 5.

2 formsWeight designs represented

Choose from cylindrical weights and a leaf-style milligram weight.

Comparison Guide

Compare the Represented Calibration Weight Types

Use this overview to compare the forms, mass ranges, and stated applications shown in the category.

Product typeRepresented optionsStated use or selection point
Cylindrical calibration weights1 g, 100 g, 500 g, 1000 g, and 5,000 g; ASTM Classes 0, 1, 2, 3, and 5Reference masses for scale and compatible balance calibration, verification, and performance checks.
Leaf calibration weight100 mg; ASTM Class 5Compact form for precise low-mass calibration, checking other weights, or verifying high-resolution micro balances.
Compatibility-specific cylindrical weights500 g, 1000 g, and 5,000 gSpecified respectively for compatible PGW and PGL; PGL, HCB, and CQT; and PGL balances.
Planning Guide

Plan the right fit before choosing

Start With the Reference Mass

Select a weight that fits the check you need to perform

Available nominal masses span 100 mg, 1 g, 100 g, 500 g, 1000 g, and 5,000 g. A 100 mg leaf weight is represented for precise low-mass calibration and high-resolution micro balance verification, while the cylindrical options provide defined reference masses for compatible balance and scale work.

  • Use milligram capacity for low-mass calibration work.
  • Choose gram-based masses for balance checks and calibration tasks.
  • Use the stated nominal mass as the reference point for your procedure.
Compare ASTM Class and Form

Align the weight classification and design with your requirements

The represented selection includes ASTM Classes 0, 1, 2, 3, and 5. Cylindrical weights offer a familiar form for placing on balances, while the 100 mg option uses a compact leaf-style form suited to milligram-capacity work.

  • ASTM Class 0 is represented at 100 g.
  • ASTM Class 1 is represented at 500 g.
  • ASTM Classes 2, 3, and 5 are also represented across different masses.
Confirm Stated Compatibility

Review equipment compatibility where it is specified

Some calibration weights are specified for particular balance types. The 5,000 g weight is specified for PGL balances; the 1000 g weight for PGL, HCB, and CQT balances; and the 500 g weight for compatible PGW and PGL balances. Other represented weights are described for calibration and verification tasks without stated model compatibility.

  • Check the balance models named for the product you are considering.
  • Use compatibility details alongside your required mass and ASTM class.
  • For unspecified compatibility, base selection on the product's stated calibration application.
FAQ

Common questions before buying

What masses are represented in this category?

The represented weights range from 100 mg to 5,000 g, including 1 g, 100 g, 500 g, and 1000 g options.

What ASTM classes are available in the represented products?

The summaries include ASTM Class 0, Class 1, Class 2, Class 3, and Class 5 weights.

What is the difference between cylindrical and leaf-style weights?

Cylindrical weights provide a familiar form for balance and scale calibration. The represented 100 mg leaf weight has a compact form for milligram-capacity work.

Which balances have stated compatibility?

The 5,000 g weight is specified for PGL balances; the 1000 g weight for PGL, HCB, and CQT balances; and the 500 g weight for compatible PGW and PGL balances.

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