OIML E1 Calibration Weight – Precision Mass for Lab Use

Accurate mass verification is the foundation of reliable weighing. Whether confirming daily balance performance,
performing routine calibration, or supporting accredited laboratory workflows, the correct calibration weight class
ensures measurement confidence and traceability.

This OIML E1 calibration weight category provides the highest precision class available for commercial laboratory weights.
E1 weights are primarily used for verifying and calibrating high-resolution analytical balances and microbalances,
as well as supporting ISO, GMP and GLP compliant quality systems.

RELATED CALIBRATION WEIGHT CLASSES

OIML E2 weights –
high-precision weights for analytical balances and routine calibration tasks.
OIML F1 weights –
precision weights ideal for balance checking and verification in everyday laboratory use.
Analytical balances –
paired with OIML E1 standards for compliant calibration and adjustment.

FEATURED: OIML E1 CALIBRATION WEIGHT SETS

OIML E1 calibration weights are manufactured to the most stringent tolerances,
suitable for the adjustment and calibration of microbalances and analytical balances with
readability to 0.1 mg or finer. Stainless steel construction, mirror finishing and
protective storage cases ensure long-term stability and contamination control.

Contact COLO.Science team

As the COLO.Science calibration range expands, this section will remain the dedicated entry point
for OIML E1 standard masses, helping you move from application requirements to the correct weight class
and configuration with full confidence.