NABL Accredited
Calibration Services

ISO 17025 Accredited | Global MRA Recognition | 100% Traceable Calibration

We provide calibration and validation services from an ISO 17025 accredited testing laboratory — weighing scale and standard weights NABL calibration.

ISO 17025 Accredited Laboratory

Global MRA Recognition — 100+ countries

48-Hour Certificate Turnaround

Audit-proof, 100% compliant documentation

Why NABL calibration matters

Accuracy You Can Trust. Compliance You Can Prove.

NABL-accredited calibration ensures your weighing instruments deliver precise, traceable, and audit-ready results across every application.

Improves weighing accuracy

Enhances product quality

Reduces production errors

Supports ISO quality management systems

Delivers reliable testing and inspection results

Increases confidence in measurement data

NABL calibration & standard weights for reliable measurement

Choose NABL-accredited calibration for weighing equipment and certified standard weights for reliable, audit-ready measurements.

NABL Calibration Services

NABL calibration for analytical balances, precision balances, platform scales, industrial scales, weighbridges, and hanging scales.
Traceable results for audits, compliance checks, and reliable measurement documentation.

Standard Weights Supply

Certified standard weights across OIML classes E1, E2, F1, F2, M1, M2, and M3.
Weight sets, individual weights, and storage boxes supplied as per application and accuracy class.

Weight Class Guide: match each OIML class to its typical calibration or industrial weighing use.

Class

Practical explanation

E1

Ultra-high precision reference weights used for calibrating the most accurate analytical balances in national and primary calibration laboratories.

E2

High-precision weights used to calibrate analytical balances and precision laboratory balances in NABL-accredited laboratories.

F1

Precision weights suitable for calibrating laboratory balances, pharmaceutical equipment, and high-accuracy industrial weighing instruments.

F2

General laboratory and industrial calibration weights used for routine quality control and production applications.

M1

Industrial-grade weights used for calibrating platform scales, bench scales, and commercial weighing equipment.

M2

Standard workshop and field test weights for routine verification of industrial weighing scales where very high accuracy is not required.

M3

Heavy-duty weights used for basic accuracy checks on large-capacity industrial scales and weighbridges.

Why Choose

The Gramton Advantage

We combine accredited calibration, controlled lab conditions and experienced technical support to help customers maintain accurate, traceable and audit-ready weighing systems.