Standard Test Weight Puchong, Selangor, KL, Johor Bahru (JB), Malaysia

Weighing & Calibration Equipment · Malaysia

Standard Test Weights — M1, M2 & F2 Class, OIML Certified

Q: What size test weight do I need for my scale?

Use a test weight close to your scale's maximum capacity, or at key intervals such as 50% and 100% of capacity, to verify accuracy across its working range.

Precision reference masses for calibrating scales, weighbridges and laboratory balances — supplied and calibrated by V&C Infinity Enterprise, a KPDN-licensed weighing scale specialist based in Puchong and Johor Bahru.

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M1 · M2 · F2Accuracy Classes

1g – 1000kgRange Supplied

OIML R111Standard Compliance

2 BranchesPuchong & Johor Bahru

Category Guide

What Is a Standard Test Weight?

A quick introduction for newcomers to legal metrology, calibration and industrial weighing.

Standard test weights are precision reference masses manufactured to tightly controlled tolerances. They are used to check, calibrate and verify the accuracy of weighing instruments — from small laboratory analytical balances to large industrial platform scales and truck weighbridges.

In practice, a test weight is placed on a scale and the displayed reading is compared against the weight's known, certified mass. If the scale agrees within its permitted tolerance, it passes; if not, it is adjusted or flagged for service. This process underpins everything from a factory's internal quality control to formal, accredited calibration required for legal and trade purposes.

In Malaysia, test weights are also central to compliance with the Weights and Measures Act 1972 (Akta 71) and KPDN (Ministry of Domestic Trade) legal metrology requirements, since any scale used for trade must be periodically verified against a traceable reference standard.

Test weights are classified into accuracy classes under OIML R111, the international recommendation that governs weight tolerances worldwide. The class you need depends on what kind of scale you're calibrating and how precise that scale needs to be — this is explained in the class comparison below.

Stainless steel standard test weight set, F2 class, used for calibrating laboratory balances

Quick Definition

Standard Test Weight (n.) — a mass standard of certified, traceable accuracy, used as a reference to calibrate or verify a weighing instrument, in accordance with OIML R111 accuracy classes.

Common Uses

Calibrating lab analytical balances
Verifying platform & floor scales
Weighbridge and truck scale checks
Internal QA / QC weight checks
SAMM / ISO 17025 accredited calibration

OIML R111 Accuracy Classes

Which Test Weight Class Do You Need?

Test weights are graded by how closely their actual mass matches their nominal value. Higher precision classes cost more and require more careful handling.

Highest Precision

F2 Class

Used for calibrating analytical balances, precision balances and other high-resolution laboratory instruments where even small deviations matter.

Best for: Laboratories, pharmaceutical QC, precision manufacturing

General Industrial

M1 Class

The standard choice for calibrating platform scales, floor scales and general industrial weighing equipment used in production and warehousing.

Best for: Factories, warehouses, workshops, general industrial scales

Commercial / Trade

M2 Class

Common for verifying retail scales, trade scales and heavier-duty equipment such as weighbridges, where absolute precision matters less than reliability.

Best for: Retail trade scales, weighbridges, bulk material handling

Materials & Construction

Stainless Steel vs. Cast Iron Test Weights

Material choice affects accuracy, durability and price — here's how the two most common options compare.

Material	Typical Class	Typical Range	Best Suited For
Stainless Steel	F2, M1	1mg – 20kg	Laboratory balances, corrosion-resistant, clean-room environments
Cast Iron	M1, M2	1kg – 1,000kg (block weights)	Floor scales, weighbridges, heavy industrial calibration
Chromium Iron	M1	1kg – 50kg	Cost-effective mid-range industrial calibration

Why It Matters

Why Calibration With Certified Test Weights Matters

An uncalibrated scale isn't just inaccurate — it's a compliance and financial risk.

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Legal Compliance

Scales used for trade in Malaysia must be verified under Akta 71 and KPDN regulations, using traceable reference weights.

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Audit & ISO Readiness

ISO 9001, HACCP and ISO/IEC 17025 audits typically require documented, traceable calibration records.

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Cost & Quality Control

Even small drift in a scale's accuracy can mean systematic over- or under-dosing, overweight shipments, or rejected batches.

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Standard Test Weights We Supply

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Cast iron 1 ton block weight, 1000kg calibration test weight

Frequently Asked Questions

Test Weight FAQs

What is the difference between M1, M2 and F2 test weights?

The difference is accuracy tolerance under OIML R111. F2 class weights have the tightest tolerance and are used for laboratory balances; M1 class is used for general industrial scales; M2 class has the widest tolerance and is used for commercial trade scales and weighbridges. The tighter the class, the smaller the permitted deviation from the weight's nominal mass.

How often should test weights be recalibrated?

Most industrial and trade users recalibrate test weights annually, though frequency depends on usage intensity, storage conditions and any accreditation body's requirements (e.g. SAMM-accredited labs often specify their own interval based on risk assessment).

Do I need a calibration certificate for my test weights?

If the test weight will be used for legal trade verification, ISO audits, or accredited calibration work, you need a traceable calibration certificate. For purely internal reference checks with no compliance requirement, an uncertified weight may be sufficient — though a certificate is recommended for audit trail purposes.

What size test weight do I need for my scale?

As a general rule, use a test weight close to your scale's maximum capacity (or at key intervals such as 50% and 100% of capacity) to verify accuracy across its working range. A scale calibrated only at low weights may still be inaccurate near full capacity.

Can cast iron test weights be used for laboratory calibration?

Generally no. Cast iron weights are typically M1 or M2 class, suited to industrial and commercial scales. Laboratory balances usually require F2 (or finer) class stainless steel weights to meet the precision needed for analytical work.