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Our accredited labSAC-SINGLAS · ISO/IEC 17025
SAC-SINGLAS accredited · ISO/IEC 17025

Calibration certificates built to hold up in front of your auditor.

Independently assessed, traceable to Singapore's National Metrology Centre, with stated measurement uncertainty on every result — accreditation no. LA-2023-0845-C. See our accreditation
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Knowledge Hub

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In-depth articles, guides, and resources designed to help you stay informed and make confident decisions.

ComplianceElectrical calibration in progress at the Unitest laboratory

ISO/IEC 17025 vs ISO 9001: What Your Auditor Wants to See

The two standards do different jobs. Here's where they overlap, where they don't, and what an auditor actually checks.

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AccreditationFluke 5560A reference calibrator on the bench in the Unitest accredited laboratory

What "SAC-SINGLAS Accredited" Actually Means

Accreditation isn't a self-declaration. A plain-English look at what the mark proves — and why it matters on a certificate.

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GuidePressure calibration setup at the Unitest laboratory

How Often Should You Calibrate? A Practical Guide

Annual by default is a myth. How to set calibration intervals on real risk, usage and drift — not a calendar.

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DecisionOn-site calibration being performed at a customer facility

On-Site vs In-Lab Calibration: Which You Need

Downtime, transport risk and accuracy all pull in different directions. A straight answer to a common question.

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Why this content can be trusted

Published by an accredited calibration laboratory

The Knowledge Hub is written by Unitest Instruments — a SAC-SINGLAS accredited lab whose measurements are audit-ready and traceable to national standards. This guidance comes from the bench, not a blog.

SAC-SINGLAS Accredited Laboratory mark — accreditation no. LA-2023-0845-C
SAC-SINGLAS Accredited

Accredited to ISO/IEC 17025 — the international standard for testing & calibration competence, recognised by the Singapore Accreditation Council.

Accreditation No. LA-2023-0845-C
  • Certificates accepted in ISO 9001 audits, with stated measurement uncertainty on every result.
  • Traceable to Singapore's National Metrology Centre (NMC) — the apex of national measurement standards.
Download Scope of Accreditation (PDF) View full accreditation
20+
Years of instrument & calibration expertise
8
Calibration disciplines — electrical, temperature, pressure & more
14
Authorised brands distributed, including Fluke
In-lab + on-site
In our SG lab or islandwide at your facility
Also accredited bizSAFE Level 3 certificate — Workplace Safety and Health Council bizSAFE Level 3WSH Council, SingaporeView certificate Synesgy ESG certificate — ESG Score B ESG CertifiedSynesgy · ESG Score BView certificate
Authorised distributor for Fluke & 13 leading test & measurement brands
Fluke Fluke Calibration Rotronic Comark Thermo Fisher Scientific Vitrek Coltraco Ultrasonics + 7 more
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