Hong Kong SAR China

CAL LAB LIMITED

Room 2103, Technology Plaza 29-35 Sha Tsui Road, Tsuen Wan, NT, Hong Kong, Tsuen Wan, NT, Hong Kong SAR China

A2LA|3815.01ISO/IEC 17025Register refreshed 2026-09-25

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852 25680106

warren@callab.com.hk

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Register record

A2LARefreshed 2026-09-25: 3815.01Active

Accredited standards

Our reading of the A2LA scope: each standard once, with its official name where we have checked it. Click a standard to see the scope line it comes from, word for word.

IEC 60079-29-2Name not checked yet

As written on the certificate · Line 1 (A2LA 3815.01)

ISO/IEC 17025:2017 CAL LAB LIMITED Room 2103; Isobutylene Hydrogen Sulfide Methane Up to 500 µmol/mol Up to 5000 µmol/mol Up to 10 µmol/mol Up to 100 µmol/mol Up to 5; ison BS EN 60079-29-2/ JJG 635/ JJG915 Reference gas comparison BS EN 60079-29-2/ JJG 635 Reference gas comparison BS EN 60079-29-2/ JJF 1172 Reference gas comparison BS EN 60079-29-2/ JJG 695 Reference gas comparison BS EN 60079-29-2/ JJG 693; IEC 17025

As written on the certificate · Line 2 (A2LA 3815.01)

ison BS EN 60079-29-2/ JJG 365 Reference gas comparison BS EN 60079-29-2 Reference gas comparison BS EN 60079-29-2/ JJG 1077 Reference gas comparison BS EN 60079-29-2/ JJG 551 Reference gas comparison BS EN 60079-29-2/ JJG 1022 Reference meter comparison JJG 825 Reference meter comparison ISO 21501-4/ JJF 1659/ JJG 846

ISO 8655-6Piston-operated volumetric apparatus - Part 6: Gravimetric reference measurement procedure for the determination of volume

As written on the certificate · Line 4 (A2LA 3815.01)

ison JJG 956; ISO 8655-6

ISO 21501-4Determination of particle size distribution - Single particle light interaction methods - Part 4: Light scattering airborne particle counter for clean spaces

As written on the certificate · Line 2 (A2LA 3815.01)

Scope as published by A2LA

6 lines

A2LA

ISO/IEC 17025

Active

3815.01

The scope document we hold says it is valid until 2027-09-30.

View scope

Accredited scope, certificate 3815.01

Line	Discipline	Method	Matrix	Range
1	Dimensional Metrology	ISO/IEC 17025:2017 CAL LAB LIMITED Room 2103; Isobutylene Hydrogen Sulfide Methane Up to 500 µmol/mol Up to 5000 µmol/mol Up to 10 µmol/mol Up to 100 µmol/mol Up to 5; ison BS EN 60079-29-2/ JJG 635/ JJG915 Reference gas comparison BS EN 60079-29-2/ JJG 635 Reference gas comparison BS EN 60079-29-2/ JJF 1172 Reference gas comparison BS EN 60079-29-2/ JJG 695 Reference gas comparison BS EN 60079-29-2/ JJG 693; IEC 17025	-	to 5000 µmol/mol; %
2	Electrical Testing	ison BS EN 60079-29-2/ JJG 365 Reference gas comparison BS EN 60079-29-2 Reference gas comparison BS EN 60079-29-2/ JJG 1077 Reference gas comparison BS EN 60079-29-2/ JJG 551 Reference gas comparison BS EN 60079-29-2/ JJG 1022 Reference meter comparison JJG 825 Reference meter comparison ISO 21501-4/ JJF 1659/ JJG 846	-	0.0001 to 4000 Bq/ m3; mg/m3; V; A; % Volume; µmol/mol
3	Electrical Testing	-	Oil	0.1 to 100000000 Ω
4	Temperature Calibration	ison JJG 956; ISO 8655-6	Ambient air	0.25 to 10000 V; L/min; m/s; µL; °C
5	Dimensional Metrology	JJF 1076	-	-90 to 6 % RH; kPa; MPa
6	Dimensional Metrology	ISO/IEC 17025:2017; ISO-ILAC-IAF Communiqué dated April 2017; IEC 17025	-	-

Ranges are reproduced from the accredited scope document as published. An absent range means the register did not state one. Line numbers are ours, for cross-reference; they follow the order of the scope document.

Accreditation data refreshed from the A2LA register on 2026-09-25.

This page mirrors a public register. For a purchasing, audit or regulatory decision, confirm against the A2LA entry linked above.