Nine products were selected from the lab's on-line database, www.cleanersolutions.org, based on past testing results matching client supplied information. All of these products were diluted to 5% using DI water in 400 ml beakers and heated to 130 F on a hot plate.
Plastic coupons were coated with the carbon black contaminant using a handheld swab. Three coupons were immersed into each solution and cleaned for 5 minutes using stir-bar agitation. Rinsing was performed for 15 seconds using tap water heated to 120 F and followed by 30 seconds of air blow off with dry compressed air at room temperature. Final observations were made, and products were ranked visually for performance.