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HJ/T 411-2007 (HJ/T411-2007)

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HJ/T 411-2007: PDF in English (HJT 411-2007)

HJ/T 411-2007
Environmental Protection Standard
of the People's Republic of China
Technical requirement for environmental
labeling products
Issued by. State Environmental Protection Administration
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative References ... 4 
3 Terms and definitions ... 4 
4 Basic requirements ... 5 
5 Technical contents ... 5 
6  Test methods ... 5 
Annex A (Informative Annex) ... 6 
This Standard was formulated with a view to implement the "People's Republic
of China Environmental Protection Law”, save resources and reduce the impact
of faucets in the production and use on human health and the environment.
During the formulating, this Standard mainly used the limits and test methods
of heavy metal elements such as lead, cadmium, chromium and arsenic in
NSF/ANSI 61-2007 "Drinking Water System Components - Health Effects" by
US National Sanitation Foundation and the American National Standards
Institute as reference. Combined with China's national conditions, it set the
requirements for the precipitation amount of lead, cadmium, chromium and
arsenic in faucets.
This standard is a guiding standard and applicable to certification of China
environmental labeling product.
This Standard was proposed by Department of Science and Technology
Standards of State Environmental Protection Administration.
The drafting organizations of this Standard. Environment and Development
Center of State Environmental Protection Administration, Center for
Development and Promotion of Science and Technology of Ministry of
Construction, China Association of Decorative Building Materials, National
Research Center for Environmental Analysis and Measurement, Architectural
Hardware Sub-technical Committee of National Technical Committee of
Standardization for Hardware Product, Foshan Quality Supervision and
Inspection Center, MOEN Guangzhou Water Heating Equipment Co., Ltd.,
JOMOO Group Co., Ltd, Brilliant Water Heating Group Co., Ltd., Foshan
Shunde Meijie Sanitary Ware Industrial Co., Ltd. AND Sunlot Group.
This Standard was approved by State Environmental Protection Administration
on December 21, 2007.
This Standard shall be implemented since April 1, 2008.
This Standard shall be interpreted by State Environmental Protection
Technical requirement
for environmental labeling products
1 Scope
This Standard specifies the faucet environmental labeling products’ definition,
basic requirements, technical contents, and inspection methods.
This Standard is applicable to faucets, such as ordinary faucets, wash basin
faucets and kitchen faucets, of which the nominal diameters are DN15, DN20
and DN25, the nominal pressure is not more than 1.0 MPa, the medium
temperature for use is not more than 90°C, and are installed in sanitary facilities
in the kitchen, bathroom (e.g. toilet, shower) and others. This Standard does
not apply to tub faucets and shower faucets.
2 Normative References
This Standard quoted the articles of the following documents. For undated
reference documents, the latest versions apply to this Standard.
GB 18145 Ceramic Cartridge Faucets
GB/T 5750.6-2006 Standard examination methods for drinking water - Metal
GB/T 18870 Technical conditions for water saving products and general
regulation for management
QB 1334 General technical specification for faucets
CJ/T 194 Non-contact water supply device
3 Terms and definitions
The following terms and definitions are applicable to this Standard.
3.1 Faucet
Annex A (Informative Annex)
Test and evaluation methods for the precipitation amount of Pb, Cr, Cd
and As in soaking solution of faucets
A.1 Principle
Use the simulated water that contains calcium chloride, sodium bicarbonate
and sodium hypochlorite to soak the contact-part between the interior surface
of the faucet and the water. Adopt inductively coupled plasma inorganic mass
spectrometry (ICP-MS) or graphite furnace atomic absorption spectrometry
(AAS) to determine the heavy metal elements in the soaking solution. After the
measured values of precipitation amount of Pb, Cr, Cd and As are processed
through standardization, compare with the limits listed in Table 1.
A.2 Reagents
A.2.1 Distilled or deionized water. the conductivity is less than 2 µS/cm;
A.2.2 Sodium hypochlorite (chemically pure);
A.2.3 Anhydrous calcium chloride (analytically pure);
A.2.4 Anhydrous sodium bicarbonate (analytically pure);
A.2.5 Pb, Cd, Cr and As standard solutions that meet the instrument conditions;
A.2.6 Concentrated nitric acid (guaranteed reagent).
A.3 Instrument
A.3.1 Graphite furnace atomic absorption spectrometer, inductively coupled
plasma inorganic mass spectrometry;
A.3.2 Commonly-use laboratory glassware;
A.3.3 PVC bottles.
A.4 Sample soaking experiment
A.4.1 Sample preparation and stabilization
A.4.2.2 Preparation of soaking solution (pH = 8.0, hardness of 100mg / L,
available chlorine of 2 mg / L)
Take 25 ml of bicarbonate buffer (A., 25 ml of calcium hardness stock
solution (A. and the required chlorine stock solution (A.; dilute
to 1 L with purified water. Prepare the soaking solution required according to
this ratio.
A.4.2.3 Sample soaking
Place the faucet’s switch to the fully open position; use the soaking solution to
fill the interior space of the faucet (if there are both hot- and cold-water channels,
both channels shall be included); accurately record the interior space volume
of the faucet according to the amount of the soaking solution. Use a clean cork
or rubber stopper coated with polytetrafluoroethylene film to plug the faucet
ends. There are two methods for the sample soaking experiment. The first
round experiment uses the method (1).
Method (1). soak at (23 ± 2)°C in the dark conditions for (24 ± 0.5) h. Remove
the soaking solution into the PVC bottle. The same faucet shall be
in the soaking experiment for 3 d under the same conditions.
Collect 3 faucet soaking solution samples in total in this experiment.
These samples shall be used to detect the precipitation amount of
Pb, Cr, Cd and As.
Method (2). the evaluation of Pb's precipitation amount shall be conducted with
other elements respectively. When evaluating Pb's precipitation
amount, at least take 3 faucet samples of the same type. When
evaluating other elements, take one faucet sample of the same
The soaking experiment of heavy metal's precipitation amount shall be
conducted at (3 ± 2)°C in the dark conditions for at least 19 d. The first day and
the second day's soak experiments shall be conducted for the interior surface
stabilization of the faucet sample. Separately collect the 16 h soaking solution
of the 3rd, 4th, 5th, 10th, 11th, 12th, 17th and 18th day (e.g. from 16.00 ~ 8.00)
to respectively detect the precipitation amount of Pb. For other-time soaking
solutions, take 2 h as a unit to continuously soak; and use the soaking solution
that is prepared at the same-day to perform the replacement.
For the evaluation of heavy metals other than Pb, it shall take one or multi faucet
k is the statistical parameter depending on the quantity size of samples.
When the number of faucet samples n = 3, k = 2.602 81. k values
corresponding to other sample quantity may be obtained from the following
Table A1 k values used in calculation of statistics Q
Number of
samples k value
Number of
samples k value
3 2.602 81 8 1.359 84
4 1.972 24 9 1.302 34
5 1.697 79 10 1.256 72
6 1.539 87 11 1.219 43
7 1.435 26 12 1.188 24
(Above excerpt was released on 2015-11-07, modified on 2021-06-07, translated/reviewed by: Wayne Zheng et al.)
Source: https://www.chinesestandard.net/PDF.aspx/HJT411-2007