NSF/ANSI 42 Manufacturer Certificate
An NSF certificate recognizing Zhejiang Bossking Technology Co., Ltd. for products that comply with NSF/ANSI 42 and appear in the applicable NSF Official Listing. Products included in the official listing are authorized to bear the NSF Mark.
-
NSF/ANSI 42 Material Safety Evaluation
An NSF evaluation report covering material leaching testing for filtration components used in applicable Purewell water filtration systems. The evaluation was conducted in accordance with the relevant NSF/ANSI 42 requirements for drinking water treatment units.
View Certificate -
NSF/ANSI 42 Filter Material Evaluation
An NSF evaluation report covering material extraction testing for selected Purewell filtration components under applicable NSF/ANSI 42 requirements for drinking-water treatment units.
View Certificate -
NSF/ANSI/CAN 372 Lead Content Evaluation
An NSF evaluation report covering lead-content verification for drinking-water system components used in applicable Purewell filtration systems. The tested component passed the relevant NSF/ANSI/CAN 372 lead-content requirements.
View Certificate -
NSF/ANSI/CAN 372 Lead Content Evaluation
An NSF evaluation report covering lead-content verification for selected Purewell water-contact filtration components under applicable NSF/ANSI/CAN 372 requirements.
View Certificate
NSF/ANSI 42
Focuses on drinking water treatment performance related to aesthetic effects, such as taste, odor, and overall drinking experience.
NSF/ANSI/CAN 372
Verifies lead-content requirements for components that come into contact with drinking water.
Filtration Performance Test Reports
-
Bacteria Removal Efficacy Test Report
A third-party laboratory report evaluating the reduction of Escherichia coli in water treated by a gravity water filtration system. The tested sample achieved an average bacteria reduction rate of 99.99% under the specified test conditions.
View Certificate -
Fluoride Reduction Test Report
A third-party laboratory report evaluating fluoride reduction at multiple tested water volumes. The gravity water filtration system demonstrated fluoride reduction rates ranging from 85.4% to 86.9% under the specified test conditions.
View Certificate -
Chlorine & Heavy Metal Reduction Test Report
A third-party laboratory report evaluating the reduction of residual chlorine and selected heavy metals by a gravity water filtration system. Testing covered residual chlorine, mercury, and lead under the conditions identified in the report.
View Certificate -
Water Quality Indicator Test Report
A third-party laboratory report evaluating selected water-quality indicators after filtration, including total coliforms, color, turbidity, visible substances, taste and odor, and free residual chlorine.
View Certificate
K8680 Water Quality & Filtration Performance Documents
-
SGS Filtration Performance Test Report
Third-party challenge testing conducted by SGS on a Portable RO Purifier sample. The report evaluates the reduction of selected contaminants and water-quality parameters using methods referring to NSF/ANSI 42, NSF/ANSI 58, and applicable EPA testing procedures.
View Certificate -
NSF/ANSI 42 Official Listing
An official NSF listing covering selected water filter products, carbon blocks, filter cartridges, and GAC filtration components manufactured by Zhejiang Bossking Technology Co., Ltd.
View Certificate -
NSF/ANSI 42 Manufacturer Certificate
An NSF certificate recognizing Zhejiang Bossking Technology Co., Ltd. for products that comply with NSF/ANSI 42 and appear in the applicable NSF Official Listing.
View Certificate -
NSF/ANSI/CAN 372 Lead Content Evaluation Report
An NSF evaluation report showing that component model K8775A passed lead-content verification testing under NSF/ANSI/CAN 372 requirements for drinking-water system components.
View Certificate
Document Notice
Document coverage varies by file. The SGS report applies only to the tested Portable RO Purifier sample and specified test conditions. NSF certification applies only to products appearing in the applicable Official Listing. The NSF/ANSI/CAN 372 evaluation applies only to component model K8775A and does not by itself certify the complete Portable RO Water Filter System.
-
EU RoHS Compliance Test Report
A TÃœV SÃœD chemical test report evaluating selected metal and polymer components for restricted substances under EU RoHS Directive 2011/65/EU, as amended by Directive (EU) 2015/863.
View Certificate
