GB/T 40977-2021 (English Version) PDF

Scope: This document specifies a test method for testing washing machines for reducing microbial contamination and reducing cross-contamination of sterile carriers. Note: A significant difference in the reduction of microbial contamination by washing machines is that the washing temperature does not exceed 40 °C. This document is applicable to domestic washing machines with or without heating devices, and the inlet water is cold and/or hot water. It is also applicable to washing machines for normal use without detergent. Also suitable for communal washing machines in neighborhoods, apartments or laundromats. This document does not apply to washing machines for commercial use, as well as washing machines for catering, hospital or other non-domestic use. It also does not include washing machines used by people who need special disinfection treatment or disinfection technology. This document does not involve safety requirements, nor does it include the performance of washing machines required in IEC60456:2010 or the impact on fabrics.

GB/T 40977-2021 Referenced Document

ISO 2267 Surface active agents; Evaluation of certain effects of laundering; Methods of preparation and use of unsoiled cotton control cloth

2021 GB/T 40977-2021 Clothes washing machines for household use—Method for measuring the microbial contamination reduction