Laboratory Services

GPI Labs is a full-service materials testing and analytical laboratory specializing in paint and coating systems. Our staff of highly qualified industry experts has extensive knowledge of protective coatings and product testing. We offer an array of techniques to characterize products’ chemical and physical properties and to evaluate their durability and functionality.

An independent 3rd party testing lab, GPI is accredited to ISO 17025 Cert No. 5033.01 by the American Association for Laboratory Accreditation (A2LA). Our testing services include product characterizations, environmental heavy metals, physical testing, forensic investigations, and accelerated weathering.

Accurate physical testing and accelerated weathering starts with quality surface preparation and coating application. Our technicians can prepare and coat the test panels required for almost any testing project.

Chemical Analysis of Products
  • Metals Content of paint, coatings, abrasive, and soil
    Our A2LA accreditation does not meet the environmental testing requirements of NELAP or NLLAP

Slip & creep
  • RCSC Specifications
  • Structural Joints Using High-Strength Bolts
Cyclic weathering
  • ASTM D5894
  • ISO12944
Salt spray
  • ASTM B117
  • ASTM G85
  • ISO 9227
Weathering/UV exposure
  • ASTM D4587
  • ASTM G154
Impact testing
  • ASTM D2794
  • ASTM G14
  • ASTM D3960
  • EPA Method 24
Volatile & nonvolatile contents of coatings
  • ASTM D2369
FTIR analysis
  • ASTM D2621
  • AASHTO R-31
Viscosity testing
  • ASTM D562
  • ASTM D2196
Adhesion testing
  • ASTM D4541
  • ASTM D3359
  • ISO 2409
  • ISO 4624
Density testing
  • ASTM D1475
  • ASTM E605
Flash point
  • ASTM D3278
  • ASTM D93
Cathodic Disbondment
  • ASTM G8
  • ASTM G95

Custom Testing Coupons to meet your project specifications
  • Welded elements
  • Fasteners
  • Various substrates (Carbon Steel, Aluminum, Weathering Steel, Stainless, etc.)
  • New or weathered surfaces
Abrasive Blasting
  • Wide range of abrasives available
  • Surface cleanliness and anchor profile to meet project needs
Coating Application
  • Experienced application technicians
  • HVLP, Airless, Conventional, and Plural Component Airless Spray Equipment
  • Environmental chambers available for controlled curing conditions

Not all testing listed above is included in our A2LA Scope of Accreditation. Please consult A2LA Certificate Number 5033.01 for a list of our accredited tests.


GPI Labs | 4403 Donker Ct. SE | Grand Rapids MI 49512 | Ph: 616-940-3112