Methods A-Z

Polymer Diagnostics, Inc. testing and consulting laboratories are accredited by the American Association for Laboratory Accreditation (A2LA).

Accreditation from A2LA, Certificate Numbers: 0514-01 & 0514-02, denotes that PDI laboratories and operations were accredited using criteria specifically developed to determine technical competence. During this process, specialist technical assessors conducted a thorough evaluation of all factors that impact the production of testing or calibration data at PDI laboratories. The A2LA’s criteria are based on the internationally accepted standard ISO/IEC 17025, which measures:

  • Technical competence of staff
  • Validity and appropriateness of test methods
  • Traceability of measurements and calibrations to national standards
  • Suitability, calibration and maintenance of test equipment
  • Testing environment in sampling, handling and transportation of test items
  • Quality assurance of test and calibration data

Test Methods


Test Description Test Method or Standard
FTIR (Fourier Transform Infrared) Spectroscopy ASTM D2124
Horizontal Burn of Self-Supporting Plastics ASTM D635; UL 94HB
Horizontal Burn of Materials Used in 302 (49 CFR 571.302) Occupant Compartments of Motor Vehicles ASTM D5132;FMVSS
Vertical Burn, 20 mm ASTM D3801; UL 94V
Vertical Burn, 125 mm
ASTM D5048; UL 945V
Oxygen Index ASTM D2863
High Performance Size Exclusion Chromatography ASTM D5296
Plasticizer in Flexible PVC PDI RPLC-01
Pyrolysis ID Rubbers ASTM D3452; PDI GCMS-02
DSC (Differential Scanning Calorimetry) ASTM D3418, E794, E1356
TGA (Thermogravimetric Analysis) ASTM E1131
Karl Fischer Moisture Content ASTM D6869


Test Description Test Method or Standard
Abrasion Resistance ASTM D3389
Brittleness Temperature (Impact) ASTM D746, D2137
Capillary Rheometry ASTM D3835
Charpy Impact ISO 179
Coefficient of Friction ASTM D1894
Coefficient of Thermal Expansion ASTM D696
Color Determination by Spectrophotometer ASTM D2244, E1331
Compression Set ASTM D395 (Method B)
Compressive Properties of Rigid Plastics ASTM D695; ISO 604
Conditioning of Plastics for Testing ASTM D618
DC Resistance or Conductance ASTM D257
Deflection Temperature Under Flexural Load ASTM D648; ISO 75
Dielectric Strength ASTM D149
Durometer Hardness (Shore A and D) AASTM D2240
Effect of Liquids ASTM D790; ISO 178
Flow Rate (Extrusion Plastometer) ASTM D1238; ISO 1133
Fogging SAE J1756; GM9305P
Fusion of PVC Compounds ASTM D2538
Impact Resistance (Izod) ASTM D256; ISO 180
Impact Resistance (Unnotched) ASTM D4812
Impact Resistance (Tup) ASTM D4226
Impact Resistance (Gardner) ASTM D5420
Instrumented Impact ASTM D3763; ISO 6603
Linear Dimensional Changes ASTM D1042
Mandrel Bend ASTM D2633 (Sec. 75); GM9503P
Poisson’s Ratio ASTM E132
QUV Testing ASTM D4329, G154; ISO 4892-3, 9370
Resistance of Plastics to Chemical Reagents (Immersion Test) ASTM D543 (Practice A)
Rockwell hardness (R Scale, Procedure B) ASTM D785; ISO 2039-2
Specific Gravity/Density ASTM D792; ISO 1183
Specular Gloss ASTM D523
Standard Test Methods for Thermoplastic Insulations and Jackets for Wire and Cable ASTM D2633 (Sec. 1-16, 72-77)
Tear Resistance ASTM D624, D1004; ISO 34
Tensile Impact ASTM D1822
Tensile Properties ASTM D412 (Method A), D638, D882, ISO 37, 527
Vicat Softening Temperature ASTM D1525; ISO 306
Volatile Loss ASTM D1203
Water Absorption of Plastics ASTM D570
Xenon-Arc Exposure Testing ASTM D2565; SAE J1885, J1960, J2412, J2527


Chromatography, Gas

  • Injection Techniques
    • Headspace
    • Direct Injection
    • Pyrolysis
    • Solid Phase Microextraction [SPME]
  • Flame Ionization Detection
  • Mass Spectrometry (GC-MS) 

Chromatography, Liquid

  • Photodiode Array Detector
  • Refractive Index

Chromatography, Size Exclusion

  • THF Soluble Polymers
  • Detection Modes
    • Refractive Index
    • Ultraviolet-visible
  • Relative Molecular Weights


  • Cone Calorimeter
  • NBS Smoke Chamber
  • OI Tester
  • Instrumented Room Fire Test Facility
  • Computer Fire Model


  • Scanning Electron Microscope (SEM)
  • Ultra High Resolution SEM with Energy Dispersive X-Ray System
  • Digital Optical Microscope
  • Zeiss Photomicroscopes
  • Nikon Stereo Microscope
  • Atomic Force Microscope
  • Digital Camera Capabilities

Moisture Analysis

  • Coulometric Karl Fischer Analysis
  • Loss on Drying Methods and Instrumentation


  • Mechanical Spectrometer
  • Capillary Rheometers

Spectroscopy, Atomic

    • Sample Introduction Techniques
      • HF Compatible Nebulization System
      • CETAC-USN
    • Sample Preparation
      • Ashing
      • Hot Plate

Wavelength-Dispersive X-Ray Fluorescence Spectroscopy

  • Sample Introduction Techniques
    • Compression Molded Disks
    • Pellets
    • Powders
    • Liquids
  • Various Quantitative Analysis Techniques

Spectroscopy, Infrared

  • Fourier-Transform Infrared Spectrometers
  • Multiple Bounce Attenuated Total Reflectance ATR Apparatus
  • IR Microscope
  • Diamond Cell
  • Single Bounce Diamond Faced ATR Apparatus

Spectroscopy, Nuclear Magnetic Resonance

  • 300 MHz Field Strength

Thermal Analysis

  • Differential Scanning Calorimetry (DSC)
  • Temperature-Modulated DSC
  • Thermogravimetric Analysis (TGA)
  • TGA coupled to Fourier Transform Infrared Spectroscopy (TGA/FT-IR)
  • TGA coupled to Gas Chromatography / Mass Spectroscopy (TGA/GC/MS) 
  • Thermomechanical Analysis (TMA)
  • Thermal Conductivity / Diffusivity by Flash Method

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