AATCC M1:2017 pdf download.AATCC Standard Reference Detergents and Laundry Detergents in General
3.1 With this background and espe- cially the environmental concerns with the use of phosphates, new AATCC Stan- dard Reference Detergents, with and without brightener, were developed in 1993 and are still used today. These con- centrated powder formulations use car- bonate builder instead of phosphate and were created without enzymes due to possible changes of enzyme strength over the storage life of the product.
4.1 Due to the growing market share of liquid detergents, AATCC saw the need and developed a liquid standard reference detergent that was relevant to the current laundry market. 4.2 Although powder and liquid deter- gents are designed to provide cleaning and stain removal, they achieve these ob- jectives differently. A key difference is the pH regime in which the two product forms operate. Powder detergents per- form optimally at higher pHs (pH ≈ 10). This higher alkalinity helps stain removal efficiency; however it also negatively im- pacts fibers and dyes. Over the years, technologies have been developed to de- liver benefits under alkaline conditions and powder detergents have been able to overcome many of their initial disadvan- tages. 4.3 Liquid detergents perform opti- mally at lower alkalinity (pH ≈ 8.5). Be- cause this pH is closer to neutrality, liq- uid laundry detergents tend to be less harsh on fibers and dyes. Over the years, technologies have been developed to help liquid laundry detergents deliver stronger cleaning benefits while remaining less harsh on fibers and dyes. Due to signifi- cant formulation differences between powder and liquid laundry detergents, different reference detergents are needed to fairly represent them. 4.4 AATCC’s first liquid detergent was the 2003 formula, with and without brightener, and was suitable for tradi- tional toploading machines. Its use was discontinued in 2016 as a newer formula was developed that could be used in both traditional and high efficiency machines. 4.5 The 2015 HE Standard Reference Detergent, available with and without brightener, is the current recommended standard liquid for both traditional top- loading and high efficiency machines. Testing of this detergent at the time of its introduction showed that its stain re- moval performance was comparable to current consumer detergents.AATCC M1 pdf download.