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Labs can continue registering for all 2025 ÐãÉ«Ö±²¥Proficiency Testing Programs (PTP). The online registration process allows labs to complete registration and credit card payment in one easy step. Just add PTP registration(s) to your cart along with quality control materials, standards, and other items. Register now to avoid the rush. The next registration deadline is June 15 for the July Moisture Management round.

PTPs support certification and continuous improvement initiatives for textile laboratories. Compare results with hundreds of other labs to verify performance or identify areas for improvement.

Register for 2025 PTP Rounds

Seven ÐãÉ«Ö±²¥programs cover test methods and evaluation procedures for Antibacterial Properties, Appearance & Physical Properties, Color Evaluation, Colorfastness, Fiber Analysis, Moisture Management, and Resistance & Repellency. Samples are selected to provide consistent results in a meaningful range for each program.

How it works:

1. Labs register for one or more PTPs.
2. ÐãÉ«Ö±²¥sends samples, instructions, and data sheets to participating labs once per year.
3. Labs have approximately one month to complete testing and submit results by email.
4. ÐãÉ«Ö±²¥distributes a report to participating labs with a confidential lab code.
5. Each lab receives a Certificate of Participation.

What’s New

Each program will be offered only once during the calendar year. A complete schedule is posted online.

The registration and payment deadline for all PTPs is the 15^th of the month prior to sample distribution. No registrations can be accepted after the deadline to ensure fair and timely processing for all participants.

Watch for new data sheets and streamlined reports throughout the year. ÐãÉ«Ö±²¥is constantly working to make PTPs more useful and valuable to participants.

PTP1: Color Evaluation

Deadline to Register: August 15, 2025

Samples shipped September 2025

• EP1, Gray Scale for Color Change
• EP2, Gray Scale for Staining
• EP7, Instrumental Assessment of Change in Color of Test Specimen
• EP12, Instrumental Degree of Staining

PTP2: Fiber Analysis

Deadline to Register: January 15, 2025

Samples shipped February 2025

• TM20, Fiber Analysis: Qualitative
• TM20A, Fiber Analysis: Quantitative

PTP3: Appearance & Physical Properties

Deadline to Register: February 15, 2025

Samples shipped March 2025

• TM88B, Seam Smoothness in Fabrics after Home Laundering
• TM88C, Crease Retention in Fabrics after Home Laundering
• TM124, Appearance of Fabrics after Home Laundering
• TM128 Wrinkle Recover of Fabrics: Appearance Method
• TM135, Dimensional Changes of Fabrics after Home Laundering
• TM179, Skew Change in Fabrics after Home Laundering

PTP4: Antibacterial Properties

Deadline to Register: March 15, 2025

Samples shipped April 2025

• TM100, Antibacterial Finishes on Textile Materials: Assessment of
• TM147, Antibacterial Activity Assessment of Textile Materials: Parallel Streak Method

PTP5: Resistance & Repellency

Deadline to Register: July 15, 2025

Samples shipped August 2025

• TM22, Water Repellency: Spray Test
• TM35, Water Resistance: Rain Test
• TM42, Water Resistance: Impact Penetration Test
• TM118, Oil Repellency: Hydrocarbon Resistance Test
• TM127, Water Resistance: Hydrostatic Pressure Test

PTP6: Colorfastness

Deadline to Register: May 15, 2025

Samples shipped June 2025

• TM8, Colorfastness to Crocking: Crockmeter Method
• TM15, Colorfastness to Perspiration
• 3, Colorfastness to Light: Xenon-Arc
• TM61, Colorfastness to Laundering: Accelerated
• TM107, Colorfastness to Water
• TM133, Colorfastness to Heat: Hot Pressing
• TM162, Colorfastness to Water: Chlorinated Pool

PTP7: Moisture Management

Deadline to Register: June 15, 2025

Samples shipped July 2025

• TM79, Absorbency of Textiles
• TM195, Liquid Moisture Management Properties of Textile Fabrics
• TM197, Vertical Wicking Rate of Textiles: to Specified Distances
• TM198, Horizontal Wicking of Textiles
• TM199, Drying Time of Textiles: Moisture Analyzer Method
• TM200, Drying Rate of Textiles at their Absorbent Capacity: Air Flow Method
• TM201, Drying Rate of Fabrics: Heated Plate Method
• TM204, Water Vapor Transmission of Textiles
• TM213, Vertical Wicking Rate of Textiles: to Specified Times

AATCC connects the global textile community to empower an innovative, informed, and sustainable future. Headquartered in Research Triangle Park, NC, USA, ÐãÉ«Ö±²¥has provided standards development, testing materials, educational resources, and professional networking to the global textile industry for more than a century.

Technical Contact: Erika Simmons; Technical Director; simmonse@aatcc.org