Welcome to GP Certified, the pioneering plastic testing laboratory in Sri Lanka.


We are Sri Lanka’s first facility dedicated to the scientific validation of both recycled and virgin plastics. Our cutting-edge lab provides essential testing services that help manufacturers, recyclers and brands meet the highest global standards in quality, safety and sustainability

Whether you’re working with post-consumer materials, filler pellets, virgin polymers, innovative new blends or finished products, GP Certified offers a comprehensive

testing suite for all commonly used plastics, including PET, HDPE, PVC, LDPE, PP and PS.

GP Laboratory also provides environmental monitoring, including air and water quality testing, for plastic-related production facilities.

We provide:

GP Test Assay

Full-spectrum testing service for recycled plastics.


Environmental Monitoring

Indoor air and water quality testing for Plastic

related production facilities.

GP Test Assay

Full-spectrum testing service

for recycled plastics.


Environmental Monitoring

Indoor air and water quality testing for Plastic

related production facilities.

Individual Testing

Custom selection based on your needs.



Custom Services

Tailored testing for innovative plastic / polymer

materials and applications.

Individual Testing

Custom selection based on your needs.


Custom Services

Tailored testing for innovative plastic / polymer

materials and applications.

Individual Testing

Custom selection based on your needs.


Custom Services

Tailored testing for innovative plastic / polymer materials

and applications.

GPLab Provides a Comprehensive

Scientific evaluation for plastics

GPLab Provides a Comprehensive

Scientific evaluation for plastics

We test a wide range of plastic materials, including virgin pellets, filler pellets,

masterbatch pellets, recycled pellets, finished products and crushed plastics.

Why choose GPCertified

Why choose

GPCertified

Sri Lanka’s First & Only Dedicated Plastic Testing Lab


Complete Testing Solutions Under One Roof


Accurate, Rapid & Cost-Effective Services


Sri Lanka’s First & Only Dedicated Plastic Testing Lab


Complete Testing Solutions Under One Roof


Accurate, Rapid & Cost-Effective Services


Customizable Packages – Full Profiles or Individual Tests


Instant Digital Reporting


Support for R&D and New Product Development

Customizable Packages – Full Profiles or Individual Tests


Instant Digital Reporting


Support for R&D and New Product Development

GP Certified,


110/1, 03

5th Ln,

Colombo 00300

GP Certified,


110/1, 03

5th Ln,

Colombo 00300

go goodpractice

be a part of the change.

GP Certified,


110/1, 03

5th Ln,

Colombo 00300

GP Certified,


110/1, 03

5th Ln,

Colombo 00300

go goodpractice

be a part of the change.

GP Certified,


110/1, 03

5th Ln,

Colombo 00300

go goodpractice

be a part of the change.