Washing Color Fastness Tester

Main purpose

The Washing Color Fastness Tester evaluates the washing fastness, dry-cleaning fastness, and shrinkage resistance of textiles such as cotton, wool, silk, hemp, and chemical fibers. It also checks how well dyes maintain their color during washing.

Working principle

The tester places the sample, detergent, and steel balls inside a stainless-steel cup mounted on a rotating rod. As the machine heats the water to the required temperature, the motor rotates the spindle at 40 rpm. The sample rubs against the steel balls inside the washing solution for a set time, simulating five household or commercial wash cycles. Afterward, the operator rinses and dries the sample, then evaluates its discoloration and staining levels using a gray card.

Instrument Features

• Durable touch switch: The lightweight electronic touch switch offers long life and high reliability. The waterproof panel film protects the circuit even when water splashes on the surface.
• Automatic operation: The system controls water level automatically and manages water inlet and outlet functions. It also includes a dry-burn prevention feature.
• Stable temperature control: The PID controller maintains accurate temperature and prevents overshooting.
• User notifications: The machine beeps when it reaches the set temperature or when the test ends.
• Safety protection: A safety switch on the working door stops all moving parts when the user opens the chamber, preventing burn accidents.

Product settings

• Test cup capacity: ISO steel cup capacity 550ml; AATCC steel cup capacity 1200ml (optional)
• rotating speed: 40±2r/min
• distance from the center of the rotating frame to the bottom of the test cup: 45mm
• sample size: 10×5cm
• time control range: 99.9min
• time control error: <±5s
• temperature control range: room temperature ~ 100 ºC (commonly used temperature: 10, 50, 60, 70, 82 ºC)
• temperature control error: <±2 ºC
• heating method: electric heating
• test cup:with capacity 75±5mm,(H) 125±10mm 550±50cc
• steel ball: 6mm
• the number of test cups: 8 cups

Applicable standards

GA10-2014 firefighters’ fire protective clothing
GB/T3921-2008 textile color resistance soap resistance color fastness
ISO105 AATCC/3/28/61/86/132, BS1006, JISL0860

Why Choose This Tester?

Choose the Washing Color Fastness Tester for its precise simulation of real-world washing conditions and advanced safety features. The tester ensures consistent results with automatic water level control, PID temperature regulation, and reliable 40 ± 2 rpm rotating speed. Its waterproof touch panel offers long-lasting durability, while the automatic inlet/outlet and anti-dry-burning protection improve operational safety. The safety door switch pauses the machine immediately when opened, preventing accidents during heating or rotation. With multiple temperature settings, multi-cup capacity, and compliance with ISO, AATCC, GB/T, and JIS standards, this tester is ideal for assessing washing fastness across a wide range of textiles and dyes. It delivers stable, accurate performance for both R&D and production environments.