What is GPT, FPT, GCR and Formaldehyde Test ? What is Lab Test Sample?

Posted by Firoz Kabir on Friday, December 20, 2013 1

In garments and textile, before starting bulk production some testing would conduct  according to the buyers requirement. Each buyer set guidelines what tests are mandatory at fabric stage, trims and garments stage.

In garments and textile testing, GPT stands for Garments Performance/ Package Test, FPT stands for  Fabric Performance/ Package Test, GCR stands for Garments Check Report and for Japan as well as china product Formaldehyde and extra pH test should be conducted. For China product this test is commonly known as GB test where pH, formaldehyde, garments safety issues are tested. 

As per buyers own features these tests are so called Lab Testing and which samples are treated for these tests are known as Lab Test Sample.

 

 

 For GPT which tests are commonly conducted listed bellow-

  • Colorfastness to Saliva
  • Colorfastness to Water
  • Colorfastness to Ozone
  • Colorfastness to Perspiration
  • Colorfastness to Non-Chlorine Bleach
  • Colorfastness to Crocking (Rubbing)
  • Colorfastness to Laundering
  • Colorfastness to Light
  • Construction Review
  • Button Attachment Strength
  • Mechanical Hazards
  • Small Parts Attachment Strength
  • Snaps- Attachment Strength
  • Physical And Mechanical Hazards/Workmanship-Use and abuse Test
  • Belt Loop Attachment Strength
  • Tear Strength
  • Tensile Strength
  • Seam Strength
  • Appearance Before & After Laundering
  • Spirality/Torque After Wash
  • Dimensional Stability (Machine Wash)
  • pH Value
  • Zipper Tab Twist Method
  • Stretch And Recovery
  • Fabric Weight

For FPT which tests are commonly conducted listed bellow-

  • Fabric construction
  • Fiber content present in fabric
  • Fabric weight
  • Color fastness
  • Weave construction
  • Yarn count

For GCR, it is normally tested by metal part supplier. How much pressure should give to attach the metal item like snap, shank, tack, ring snap buttons with garments.

A limited percent of formaldehyde should present in garments which are shipped for Japan country, therefore Formaldehyde test would be conducted from JAPAN.

There are some third party testing companies who tests all these tests internationally. Most popular some testing  labs are given below-
  • SGS (General Conditions for Certification Services)
  • BV (Bureau Veritas)
  • INTERTEK
  • CTS (Consumer Testing Services)

About the Author

Md. Firoz Kabir(M.Sc in Textile Engineering)

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1 comment:

  1. Seam Slippage and Tensile Strength are part of the basic tests in an FPT. Your list of basic tests is incomplete

    ReplyDelete

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