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NABL

NABL Accredited Calibration Mass Laboratory

Precision you can trust with NABL-accredited mass calibration, backed by expert professionals and globally recognized standards.

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Domain Expert: "25+ Years of Weighing Domain Expertise

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NABL Accredited Laboratory

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Your calibration requirements are handled by our domain experts

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Complete Peace of Mind. Experience complete peace of mind with our globally traceable standards.

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Certified Precision Calibration Weights

High-grade stainless steel

industrial & laboratory standards

Certified Stainless Steel Weights - All Classes

E1 E2 F1 F2 M1 M2

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Calibration and Certification Included

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Immediate Global Sales & Shipping

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Expert Technical Support & Guidance

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Internationally Traceable Standards (NIST/ISO)

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1000+

Happy Customers

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10,000+

Instruments Calibrated

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100%

Traceable Result

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Pan India

Service Support

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Quick

Trunaround Time

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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.

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Improves weighing accuracy

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Enhances product quality

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Reduces production errors

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Supports ISO quality management systems

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Delivers reliable testing and inspection results

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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.

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NABL Calibration Services

  1. NABL calibration for analytical balances, precision balances, platform scales, industrial scales, weighbridges, and hanging scales.

  2. Traceable results for audits, compliance checks, and reliable measurement documentation.

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Standard Weights Supply

  1. Certified standard weights across OIML classes E1, E2, F1, F2, M1, M2, and M3.

  2. Weight sets, individual weights, and storage boxes supplied as per application and accuracy class.

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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.

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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.

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Traceable Calibration

Calibration performed using NABL-approved standard weights for reliable and documented results.

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Equipment Inspection

Load cell, display, PCB, levelling, and overall performance checked alongside calibration.

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Expert Support

Technical guidance and troubleshooting support available during and after calibration.

Bulid on Trust.
Backe by Standards.

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Controlled laboratory environment with monitored temperature and humidity conditions.

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Advanced mass comparators and calibration equipment for dependable measurement results.

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Skilled metrologists and calibration professionals with practical industry experience.

Scope of calibration - what we calibrate

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Mass & Weighing

Truck Weighbridges

Analytical & Precision Balances

Platform & Industrial Scales

Crane & Hanging Scales

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Standard Weights

Standard Weights (E1, E2, F1, F2, M1)

Weight Sets & Boxes

Industries We Serve

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Pharma

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Logistics

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Automobile

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Steel

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Chemical

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Foundry

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Rubber

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Paint

Companies That Trust Our Calibration

Certifications & trust proof

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NABL Certificate

Certificate no. CC-XXXX · Accredited scope: Mass

Award

ISO/IEC 17025:2017

Accredited testing & calibration laboratory

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Legal Metrology

Licensed where applicable for verification work

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Accredited Since []

Serving industry for years

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Ready for Audit-Ready Accuracy?

Book your NABL-accredited calibration today.

Call Today at +91 80098 00848​​

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