基本流程 A 客户询价，我司视产品具体情况报价
B 双方达成共识后，签定合同，客户付款
C 我司收款后正式开案，客户配合提供认证所需要的的一切资料
D 在合同规定的时间内完成认证，给客户寄送认证证书
所需要准备的资料（PMI表格和图纸）
1 PMI表格
A 申请人的地址和电话号码。
B 主要部件和系列部件的情况介绍（主要部件的介绍要特别详细，包括命名、黏合剂、辅助材料等的特性 ）。
C 结构部件的供应商的名称、地址和联系人。
D 写有代表性部件图表的技术表格，表明与水接触的不同部件
E 所含每个部件系列的技术规格的描述，特别是尺寸范围和系列流程
F 系列部件的命名，为人类饮用设计、与水接触的每个部件的详细说明
G结构部件的公式描述
2 图纸
爆炸图、结构图（尺寸图）、水流面积图、零部件表、化学成分分析表图上要标明各部件的名称，安装及使用说明等要用英文表示。
KTW认证
"KTW”代表德国联邦健康部门饮用水系统选材与健康评估权威部门。KTW是2003年成立的强制监管机关。一项新的要求则是要求供应商符合DVGW(德国气体与水协会 )的第W 270项条例。“微生物在非金属材质上的传播”。这个标准主要保护饮用水不受生物杂质污染。W 270目前也是法律规定的执行规范。目前所有出口欧洲的饮用水系统及辅料都必须出具KTW认证。因此，中国饮用水系统及辅料如果想要出口到欧洲国家，必须通过KTW认证。KTW已经获得世界健康组织(WHO)对饮用水安全认证规范的权威认定。
KTW测试的标准是EN681-1，W270的测试标准就是W270。
基本流程
A 客户询价，我司视产品具体情况报价
B 双方达成共识后，签定合同，客户付款
C 我司收款后正式开案，客户配合提供认证所需要的的一切资料
D 在合同规定的时间内完成认证，给客户寄送认证证书
所需要准备的资料（PMI表格和图纸）
1 PMI表格
A 申请人的地址和电话号码。
B 主要部件和系列部件的情况介绍（主要部件的介绍要特别详细，包括命名、黏合剂、辅助材料等的特性 ）。
C 结构部件的供应商的名称、地址和联系人。
D 写有代表性部件图表的技术表格，表明与水接触的不同部件
E 所含每个部件系列的技术规格的描述，特别是尺寸范围和系列流程
F 系列部件的命名，为人类饮用设计、与水接触的每个部件的详细说明
G结构部件的公式描述
2 图纸
爆炸图、结构图（尺寸图）、水流面积图、零部件表、化学成分分析表图上要标明各部件的名称，安装及使用说明等要用英文表示。
Guideline for Hygienic Assessment of
Organic Materials in Contact with
Drinking Water (KTW Guideline)1
1. Preliminary remark
This Guideline may be used to conduct a hygienic assessment of organic materials in contact with drinking water.
This Guideline replaces the Second Communication of the KTW
Recommendations [1] and the KTW Recommendations for the plastics polyvinyl
chloride, polyethylene, polypropylene and acetal resins. It includes the adjusted
conversion factors for the different uses of these products as set forth in the EAS
proposal [2]. These may be used by the test laboratory to calculate the relevant test values. Testing at higher temperatures (warm-water test, hot-water test) should be performed with a contact time of 24 hours in accordance with the
European standard for migration testing (DIN EN 12873-1: 2004 and DIN EN
12873-2: 2005).
This Guideline should be used for testing plastics such as polyethylene, polypropylene, polybutene, polyvinyl chloride, chlorinated polyvinyl chloride and
cross-linked polyethylene.
For coatings based on epoxy resins, polyurethanes, polyesters and polyacrylates,
and mixtures thereof, the separate Guideline for hygienic assessment of organic coatings in contact with drinking water [3] should be applied.
For lubricants, the separate Guideline for hygienic assessment of lubricants in
contact with drinking water (hygienic lubricants) should be applied [4].
For rubber materials, a guideline document is currently in preparation. Until its
publication, the KTW recommendation 1.3.13. [5] shall be applicable.
Cementitious materials should be tested in accordance with DVGW Data Sheet W 347 on "Hygienic requirements for cementitious materials in drinking water –
testing and assessment".
Bituminous coatings should be tested in accordance with DVGW Data Sheet
W 348 on "Requirements for bituminous coatings of fittings made of ductile cast
iron and in connections of pipes made of ductile cast iron, non-alloy and low-alloy
steel".
1.1 Legal status
This Guideline is not a legal instrument and is therefore non-binding. It represents
the current state of scientific and technical knowledge with regard to the hygienic requirements, which should be met by organic materials in contact with water intended for human consumption (drinking water) within the sense of the Drinking
Water Ordinance [Trinkwasserverordnung, TrinkwV] of 2001. Article 17(1) of the
TrinkwV 2001 states that for construction or maintenance of installations which
process or distribute water for human consumption, "only such materials [may] be
used which, when in contact with water, do not release substances in
concentrations exceeding the limits considered unavoidable according to generally
accepted technical standards, directly or indirectly affect the level of protection of human health provided for by this Regulation, or alter the odour or flavour of the
water..."
It can therefore be assumed that organic materials in contact with drinking water,
which comply with the requirements of this Guideline will also satisfy the hygienic
requirements of the TrinkwV 2001.
1.2. Certification symbols and the tests on which they are based
Organic materials used in water supply installations shall be deemed to fulfil the
requirements of Article 17(1) of the TrinkwV 2001 if they are used in compliance
with -- at least -- generally accepted technical standards.
For hygienic safety in terms of microbiological criteria, organic materials should, in
addition to and independently of this Guideline, pass a test in accordance with
DVGW standard W 270.
Generally accepted technical standards include, for instance, the Technical Rules
of the German Technical Association for Gas and Water (DVGW).
The fact that a product in contact with drinking water made from organic materials
complies with generally accepted technical standards and with the requirements of
the Drinking Water Ordinance, shall be indicated by labelling it with a certification
symbol issued by a certifying authority such as the DVGW.
2. Changed test methods
Testing should be done in the following manner, in accordance with DIN EN 1420-
1: 1999 and DIN EN 12873-1: 2004, DIN EN 12873-2: 2005, and taking into
account the choices still left open in the relevant European standards:
2.1 Migration testing in accordance with DIN EN 12873-1: 2004 and DIN EN
12873-2: 2005
2.1.1 Details of the cold-water test at (23 ± 2) °C a) The test pieces are not subjected to a disinfection pre-treatment
(superchlorination).
b) The test pieces are pre-treated according to the following sequence:
- 1 h of flushing with tap water,
- 24 h of stagnation with test water at (23 ± 2) °C,
- 1 h of flushing with tap water,
- rinsing with test water.
c) Water as defined in 5.1.2 DIN EN 12873-1 should be used as test water.
d) At least two identical contact tests and two blank tests should be performed
simultaneously.
e) Pipes with an internal diameter of DN < 80 mm should be tested by filling
them. Pipes with an internal diameter of 80 ≤ DN < 300 mm should be
tested by inserting a glass cylinder with an area-to-volume ratio of approx. 5
dm-1. Pipes with an internal diameter of ≥ 300 mm may be tested by
inserting a glass cylinder or by filling pipe segments at an area-to-volume ratio of 5 dm-1 Coatings of tanks should be tested using coated plates at an
area-to-volume ratio of approx. 5 dm-1. Sealings and fittings should be
tested by immersing the products at an area-to-volume ratio of approx. 5
dm-1 (see Table in Appendix 1).
f) If pipes, sealings or fittings do not differ in their material composition and
manufacturing process, testing of the smallest diameter of the product range will be sufficient.
g) The migration water samples from the first three test periods of three days contact time each shall be used for further analyses.
h) The TOC shall be determined in terms of the non-purgeable organic carbon
(NPOC) in all 3 migration water samples, in accordance with DIN EN 1484.
i) The specific migration of individual substances shall be determined using
these migration water samples.
2.1.2 Details of the warm-water test at (60 ± 2) °C and hot-water test at
(85 ± 2)°C a) The test pieces are not subjected to a disinfection pre-treatment
(superchlorination).
b) The test pieces are pre-treated according to the following sequence:
- 1 h of flushing with tap water,
- 24 h of stagnation with test water at the test temperature
((60 ± 2) °C or (85± 2)°C),
- 1 h of flushing with tap water,
- rinsing with test water
c) Water as defined in 5.1.2 DIN EN 12873-1 shall be used as test water.
d) At least two identical contact tests and two blank tests should be performed
simultaneously.
e) Pipes with an internal diameter of DN < 80 mm should be tested by filling
them. Pipes with an internal diameter of 80 ≤ DN < 300 mm should be
tested by inserting a glass cylinder with an area-to-volume ratio of approx. 5
dm-1. Pipes with an internal diameter of ≥ 300 mm may be tested by
inserting a glass cylinder or by filling pipe segments at an area-to-volume
ratio of 5 dm-1 Coatings of tanks should be tested using coated plates at an
area-to-volume ratio of approx. 5 dm-1. Sealings and fittings should be
tested by immersing the products at an area-to-volume ratio of approx. 5
dm-1 (see Table in Appendix 1).
f) If pipes, sealings or fittings do not differ in their material composition and
process of manufacture, testing of the smallest diameter of the product
range is sufficient.
g) The test pieces are filled with or immersed in test water at the test temperature. Each test run should be kept at the required temperature by
means of a heating circulator or thermostat.
h) After pre-treatment, the test involves 7 migration periods at the test
temperature (cf. Appendix 2: Diagram of the test procedure for migration
testing at higher temperatures). The migration water samples from the first
three and last two test periods, each with a contact time of 24 hours, shall
be used for the subsequent analyses.
i) The TOC is determined in accordance with DIN EN 1484 in the 5 migration
water samples.
j) The specific migration of individual substances is determined in the
migration water samples from the 1st, 6th and 7th periods.
2.2 Odour and flavour test in accordance with DIN EN 1420-1: 1999 and DIN
EN 1622: 2006
2.2.1 Details of the cold-water test at (23 ± 2) °C a) The test pieces are not subjected to a disinfection pre-treatment
(superchlorination).
b) The test pieces are pre-treated according to the following sequence:
- 1 h of flushing with tap water,
- 24 h of stagnation with reference water at (23 ± 2)°C,
- 1 h of flushing with tap water,
- rinsing with reference water.
c) The reference water should be in accordance with 6.3.1 DIN EN 1420.
d) At least two identical contact tests and two blank tests should be performed
simultaneously.
e) Pipes with an internal diameter DN of < 300 mm should be tested by filling
them. Pipes with an internal diameter DN of ≥ 300 mm may be tested by
inserting a glass cylinder or by filling pipe segments at an area-to-volume
ratio of 2.5 dm-1 Coatings of tanks should be tested using coated plates at
an area-to-volume ratio of approx. 2.5 dm-1. Sealings and fittings should be
tested by immersing the products at an area-to-volume ratio of approx. 1.5
dm-1 (accessories) or 0.2 dm-1 (sealings) (see table in Appendix 1).
f) If pipes, sealings or fittings do not differ in their material composition and
process of manufacture, testing of the smallest diameter of the product
range is sufficient.
g) The migration water samples from the first three test periods of three days'
contact time each shall be used for determining the threshold odour number
(TON) / threshold flavour number (TFN). If the threshold odour number fails
to meet requirements, the threshold flavour number need not be
determined.
2.2.2 Details of the warm-water test at (60 ± 2)°C and hot-water test at
(85 ± 2)°C a) The test pieces are not subjected to a disinfection pre-treatment
(superchlorination).
b) The test pieces are pre-treated according to the following sequence:
- 1 h of flushing with tap water,
- 24 h of stagnation with reference water at the test temperature
- 1 h of flushing with tap water,
- rinsing with reference water.
c) The reference water should be in accordance with 6.3.1 DIN EN 1420.
d) At least two identical contact tests and two blank tests should be performed
simultaneously.
e) Pipes with an internal diameter DN of < 300 mm should be tested by filling
them. Pipes with an internal diameter DN of ≥ 300 mm may be tested by
inserting a glass cylinder or by filling pipe segments at an area-to-volume
ratio of 2.5 dm-1 Coatings of tanks should be tested using coated plates at an area-to-volume ratio of approx. 2.5 dm-1. Sealings and fittings should be
tested by immersing the products at an area-to-volume ratio of approx. 1.5
dm-1 (accessories) or 0.2 dm-1 (sealings) (see table in Appendix 1).
f) If pipes, sealings or fittings do not differ in their material composition and
process of manufacture, testing of the smallest diameter of the product
range is sufficient.
g) After pre-treatment, the test involves 7 migration periods at the test
temperature (cf. the Diagram of the test procedure for migration testing at
higher temperatures). The migration water samples from the 1st, 6th and
7th periods, each with a contact time of 24 hours, shall be used to determine the TON and TFN.
h) If the threshold odour number fails to meet requirements, the threshold
flavour number need not be determined.
2.2.3 Details of the determination of the threshold odour number (TON)
and the threshold flavour number (TFN)
The finalisation involves the following points of DIN EN 1622: 2006:
- Dilution steps are graded by a factor of 2.
- The "unforced pair test" shall be used.
- At least three test persons are required.
- The results of the test persons should display at least 70% agreement.
- If the migration water of the final test period does not produce the required
agreement, the test should be repeated. The results produced by one test
person should lie within a single dilution step of each other.
6
水暖卫浴 橡胶产品申请德国KTW认证
