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Three Types of Laundry Detergents: Performance in Soft and Hard Water
Author(s) -
Lovingood Rebecca P.,
Woodard Janice E.,
Leech Irene E.
Publication year - 1989
Publication title -
home economics research journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.372
H-Index - 31
eISSN - 1552-3934
pISSN - 0046-7774
DOI - 10.1177/1077727x8901700305
Subject(s) - laundry , carbonate , hard water , phosphate , soft water , deposition (geology) , environmental science , pulp and paper industry , materials science , chemistry , geology , engineering , waste management , organic chemistry , metallurgy , paleontology , sediment
The performance of phosphate‐built, carbonate‐built, and unbuilt liquid laundry detergents was evaluated with standard controlled tests to determine soil re moval, soil deposition, and carbonate deposition in soft and hard water using home laundry appliances. Light reflectance data were analyzed using analysis of variance procedures. All three types of detergents performed better in soft water than in hard. The unbuilt liquids and phosphate‐built powders were more effec tive in soil removal and whiteness retention than the carbonate‐built products, and differences in results were magnified as the number of washings was in creased. At present, unbuilt liquids are a practical and effective alternative to phosphate‐built laundry detergents.