Handan drinking water quality testing

Handan drinking water quality testing, Total:246 items.

The international standard classification for "Handan drinking water quality testing" includes: Water quality , Non-alcoholic beverages , Drinking water , Installations in buildings , Chemical laboratories. Laboratory equipment .

The Chinese standard classification for "Handan drinking water quality testing" includes: Environmental sanitation , Beverage products , Analysis methods for toxic substances in water , Water supply and draining engineering in general , Electrochemical, thermochemistry and optical profile type analyzer , Environmental quality standards for specialized fields .

Guangdong Provincial Standard of the People's Republic of China

DB4403/T 204-2021 Drinking water quality risk control regulations
DB4403/T 60-2020 Drinking Water Quality Standards
DB4403/T 435-2024 Technical regulations for supervision and inspection of drinking water quality

Professional Standard - Commodity Inspection

SN/T 2528-2010 Determination of Legionella in drinking water

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

GB/T 5750.3-2006 Standard examination methods for drinking water - Water analysis quality control
GB/T 5750.1-2006 Standard Examination Methods for Drinking Water-General Principles
GB/T 8538-1995 Methods for examination of drinking natural mineral water
GB/T 8538-2008 Methods for examination of drinking natural mineral water
GB/T 5750-1985 Standard examination methods for drinking water
GB/T 5750.3-2023 Standard examination methods for drinking water—Part 3: Water analysis quality control
GB/T 5750.2-2006 Standard Examination Methods for Drinking Water - Collection and Preservation of Water Samples
GB 5749 5750-2006 Standards for drinking water quallity

Professional Standard - Urban Construction

CJ/T 345-2010 Activated carbon from coal for drinking water treatment in municipal water plant
CJ/T 94-2005 Water quality standards for fine drinking water
CJ 3020-1993 Water Quality Standard for Drinking Water Source
CJ 94-1999 drinking water quality standards
CJ 94-2005 Water quality standards for fine drinking water
CJ/T 241-2007 Water meter for fine drinking water
CJ/T 3020-1993 Water quality standard for drinking water sources

Group Standards of the People's Republic of China

T/WSJD 10-2020 Technical specifications for on-line monitoring of drinking water quality
T/CNMW 002-2020 Drinking natural mineral water sources (above grade A in quality evaluation) inspection work specifications
T/CBIA 007-2021 Boiled water
T/ZGM 024-2022 Standards for healthy and pleasant drinking water
T/ZS 0625-2024 Standards for drinking water quality in Pinghu city
T/BJWA 001-2021 Standards for healthy drinking water quality
T/CNMW 001-2018 Evaluation standard for water quality grade of drinking natural mineral water
T/GXRZ 002-2021 Guangxi high-quality natural mineral water for drinking
T/SZAS 32-2021 Specification for healthy drinking water quality
T/SWSTA 0007-2024 Determination of heterotrophic bacteria in drinking water Pour plate method
T/CIECCPA 007-2022 Technical specification for on-line quality and quantity monitoring in pipeline direct drinking water system
T/ZZB 1577-2020 Mobile laboratory for detection of urban water supply
T/CPMA 021-2020 Method of on-site detection of ammonia nitrogen in drinking water - Salicylic Acid Method
T/NTAS 012-2022 Magnetic media for drinking water treatment
T/CECS 10371-2024 Mobile laboratory for urban water supply quality testing
T/ZZB 0981-2019 Aluminum water bottle
T/CNHAW 0001-2017 Bottled boiled water for drinking
T/ZS 0516-2023 Standards for drinking water quality in Jiaxing city
T/CIMA 0016-2020 Detection system of Pseudomonas aeruginosa in drinking water
T/CNMW 001-2020 Evaluation standard for water quality grade of drinking natural mineral water
T/CUWA 20064-2024 Technical standards for drinking water toxicity testing methods
T/HIFSA 0002-2023 "Photoelectric Detection Method for Microbial Detection of Water Quality"
T/WPIA 001-2017 High quality drinking water quality standard
T/QGCML 271-2022 Technical specification for high-quality drinking water integrated water supply system
T/GDMA 46-2021 Drinking water quality standards for mother and baby in Guangdong, Hong Kong and Macao
T/CAQI 299-2022 Evaluation requirements for drinking water quality in ecological campuses
T/CAPS 01-2021 Healthy Drinking Water Quality
T/QGCML 2103-2023 Municipal water supply quality detection and control system

保定市市场监督管理局

DB1306/T 207-2022 Drinking water quality standards

Anhui Provincial Standard of the People's Republic of China

DB34/T 3081-2018 Rules for sampling water quality of rural drinking water safety projects

Hainan Provincial Standard of the People's Republic of China

DB4601/T 4.1-2021 Technical Specifications for Drinking Water Quality Guarantee Part 1: Water Transmission and Distribution Pipeline Network Engineering
DB4601/T 3-2021 Drinking Water Quality Standards

Hebei Provincial Standard of the People's Republic of China

DB1307/T 286-2019 Drinking Water Quality Standards

Shanghai Provincial Standard of the People's Republic of China

DB31/ 62-1991 Hygienic standards for purified drinking water
DB31/ 197-1997 drinking water
DB31/ 196-1997 drinking pure water
DB31/T 1091-2018 Drinking Water Quality Standards

Jiangsu Provincial Standard of the People's Republic of China

DB3202/T 1073-2024 Drinking water quality management specifications
DB32/T 761-2022 Hygienic Specifications for Quality-separated Drinking Water in Domestic Drinking Water Pipelines (Revised)
DB3204/T 1006-2019 Technical specifications for on-line monitoring of drinking water quality

Taiwan Provincial Standard of the People's Republic of China

CNS 14866-3-2004 Measurement of water flow in closed conduits - Meters for cold potable water - Part 3: Test methods and equipment
CNS 14559-2001 Method of test for Radon in drinking water
CNS 15084-3-2007 Measurement of water flow in closed conduits - Combination meters for cold potable water - Part 3 : Test methods
CNS 3761-1982 Methods of Test for Carbonated Soft Drink
CNS 7038-1999 Method of test for tritium in drinking water
CNS 14866.3-2004 Measurement of water flow in closed conduits - Meters for cold potable water - Part 3: Test methods and equipment

Jilin Provincial Standard of the People's Republic of China

DB22/T 2836-2017 Determination of seven kinds of odorous substances in drinking water and source water by gas chromatography-mass spectrometry
DB22/T 2838-2017 Test method for 10 kinds of antibiotics in drinking water and source water by ultra-high performance liquid chromatography-mass spectrometry/mass spectrometry
DB22/T 2001-2014 Bromate Rapid Detector in Drinking Water

Professional Standard - Agriculture

NY 5027-2001 Poultry drinking water quality for pollution-free food storage
NY 5027-2008 Pollution-free Food - Quality of Drinking Water for Livestock and Poultry
GB 5750-1985 Standard examination methods for drinking water

未注明发布机构

AS/NZS 5667.5:1998(R2016) Water Quality - Sampling Part 5: Guidance on Sampling of Drinking Water and Water Used for Food and Beverage Processing

Professional Standard - Machinery

JB/T 51226-1999 Quality grading of chicken drinking fountains

Henan Provincial Standard of the People's Republic of China

DB41/T 2403-2023 Technical specifications for on-line monitoring of water quality biotoxicity (luminescent bacteria method) in drinking water sources

Gansu Provincial Standard of the People's Republic of China

DB62/T 899-2002 Drinking water quality of pollution-free agricultural products, livestock and poultry in Lanzhou City

Yunnan Provincial Standard of the People's Republic of China

DB53/ 118-2009 Drinking natural spring water (drinking mountain spring water) in bottles (barrels)

HU-MSZT

MSZ 450/2-1977 Definition of drinking water quality. Microbiological testing
MNOSZ 4757-1956 Drinking water safety testing
MSZ 448/17.lap-1964 Detection of fluoride ions in drinking water
MSZ 448/16-1987 Drinking water testing, iodide ion content testing
MSZ 319-1982 Livestock drinking water quality
MSZ 448/31.lap-1967 Basic chemical and physical testing of drinking water quality
MSZ 448/8-1981 Drinking water testing
MSZ 448/9-1980 Drinking water lead determination
MSZ 5200/20.lap-1959 Generator water detection. Tested quality limewater and limewater testing
MSZ 448/6-1980 Determination of ammonium in drinking water
MSZ 448/47-1982 Arsenic Determination in Drinking Water
MNOSZ 448-28.lap-1955 Water testing - amino acid protein testing

AT-ON

ONORM M 6250-1986 Public drinking water supply; requirements for drinking (potable) water quality
ONORM M 6251-1986 Public drinking water supply; monitoring ofthe water quality
ONORM M 6252-1992 Water quality - Sampling - Guidance on sampling of drinking water and water used forfood and beverage processing
ONORM M 6246-1996 Water analysis - Expression of results in drinking water analysis

CZ-CSN

CSN 75 7111-1989 Wator quality. Drinkin water
CSN 75 7211-1993 Water quality. Drinking water. Surveillance of the quality by transport, storage and distribution
CSN 75 7214-1994 Water quality. Raw water for treatment at drinking water. Classification
CSN ISO 5667-5:1994 Water quality. Sampling. Part 5: Guidance on sampling of drinking water and water used for food and beverage processing
CSN 83 0520 Cast.29-1976 Physicochemical analysis of drinking water. Determination of humic matter
CSN 75 7220-1998 Water quality - Inspection of surface water quality
CSN ON 56 7877-1962 Fruit drinks. Quality Standard
CSN 83 0520 Cast.13-1975 Physicochemical analysis of drinking water. Determination of dissolved substancos
CSN 83 0612-1976 Operating control of the quality of drmking water in water supply engineering

KE-KEBS

KS 05-459 Pt.2-1985 KENYA STANDARD SPECIFICATION FOR DRINKING WATER PART 2. PHYSICAL METHODS OF TEST FOR THE QUALITY OF DRINKING WATER
KS 05-459 Pt.3-1985 KENYA STANDARD SPECIFICATION FOR DRINKING WATER PART 3, METHODS FOR BIOLOGICAL AND MICROBIOLOGICAL TESTS FOR DRINKING WATER
KS 05-459 Pt.4-1985 KENYA STANDARD SPECIFICATION FOR DRINKING WATER PART 4. METHODS FOR DETERMINING METAL CONTAMINANTS IN DRINKING WATER

Association Francaise de Normalisation

NF T90-420:1987 Testing water - Bacteriological examinations of drinking water.
NF T90-201:1979 Essais des eaux - Effluents aqueux des raffineries de pétrole - Échantillonnage
NF EN ISO 19250:2013 Water quality - Testing for Salmonella spp

SCC

AWWA ACE65481 Drinking Water Quality Management System
AWWA WQTC50350 Remote Water Quality Monitoring of Drinking Water Treatment Systems
AWWA WQTC65752 Protein Assay in Drinking Water and Reclaimed Water
BS 6068-6.5:1991 Water quality. Sampling-Guidance on sampling of drinking water and water used for food and beverage processing
AWWA WQTC71604 Particle Related Water Quality Prediction for Drinking Water Distribution Systems
NS 4750:1976 Water analysis — Sampling for bacteriological examination of potable water
NS 4751:1976 Water analysis — Methods for bacteriological examination of potable water
AWWA WQTC50353 Detection of Algae in Drinking Water Sources by On-Line Measurements
AWWA ACE56316 Improving Water Quality in Drinking Water Reservoirs Using Hypolimnetic Oxygenation
AWWA ACE68953 Detection of Episodic and Low-Level Concentrations of Emerging Wastewater Contaminants in Drinking Water
DANSK DS/ISO/TS 24541:2020 Service activities relating to drinking water supply, wastewater and stormwater systems – Guidelines for the implementation of continuous monitoring systems for drinking water quality and operational parameters in drinking water distribution networks
AWWA ACE90007 Calibration of Water Quality Models for Potable Distribution Systems
AS 4020(INT):1994 Products for use in contact with water intended for human consumption with regard to their effect on the quality of water
AS 3855(INT):1991 Products for use in contact with water intended for human consumption with regard to their effect on the quality of water
AWWA WQTC60672 Detecting Contaminated Drinking Water: Harnessing Consumer Complaints
AAMI TIR58:2014 Water testing methodologies
AAMI TIR58:2021 Water testing methodologies
AWWA WQTC53021 Rapid Detection of Escherichia coli O157:H7 in Drinking Water
AWWA ACE95285 New Management for Maintaining Drinking Water Quality in Distribution Systems
AWWA WQTC58941 Detection of Infectious Cryptosporidium in Filtered Drinking Water
AWWA ACE99573 Balancing Environmental and Potable Water Quality Needs in Indirect Potable Reuse Projects
AWWA WQTC65967 Impact of Feed Water Quality on Biofouling of Nanofiltration Membranes Used for Drinking Water Production
AWWA ACE68660 Increasing the Efficiency of Testing and the Accuracy of Test Results for Drinking Water Analysis
AWWA JAW48169 Journal AWWA — Detection Limits of Organic Contaminants in Drinking Water
AWWA ACE58303 Detection of Infectious Cryptosporidium in Filtered Drinking Water
AWWA ACE70785 Hydrogen Sulfide Detection in Drinking Water Sources and Treatment Options
NS-ISO 5667-5:1991 Water quality — Sampling — Part 5: Guidance on sampling of drinking water and water used for food and beverage processing (ISO 5667-5:1991)
AWWA QTC97206 Aquatic Ecology and Nutrients in Drinking Water Systems
AWWA PATH56558 Waterborne Campylobacter Epidemics: Assessment of Drinking Water Quality
AWWA REUSE52136 Recycled & Nonpotable Water Quality System Master Plan
AWWA WQTC65861 Performance Characteristics of Methods Approved for the Detection of Coliforms in Drinking Water
BS 6920-2-2.3:1990 Suitability of non-metallic products for use in contact with water intended for human consumption with regard to their effect on the quality of water. Methods of test-Appearance of water
DIN EN 17892 E:2022 Draft Document - Water quality - Determination of the sum of perfluorinated substances (Sum of PFAS) in drinking water - Method using liquid chromatography/mass spectrometry (LC/MS); German and English version prEN 17892:2022
AWWA WQTC52951 Water Quality Differences Between the Ohio River and the Storage Reservoir of the City of Newport Drinking Water Plant
AWWA ACE54242 Wet-Pipe Fire Sprinklers and Drinking Water Quality
AWWA WQTC57167 Testing and Evaluation of Lining Materials for Drinking Water Pipeline Rehabilitation
DANSK DS/EN ISO 19250:2013 Water quality - Detection of Salmonella spp.
AWWA WQTC55030 Investigation Into the Quality of American Water System's Bottling of Drinking Water
AWWA ACE61757 Methods to Derive Safe Drinking Water Levels for Chemicals in Drinking Water
AWWA INF53998 Innovative Designs for the Management of ASR Water Quality at a Potable Water Supply Facility
VDI-MT 6023 BLATT 4-2022 Hygiene in drinking water installations — Qualifications for drinking water hygiene
AWWA ACE94050 Revision of Japanese Drinking Water Quality Standards and Its Enforcement System
BS 6920-2-2.3:1988 Suitability of non-metallic products for use in contact with water intended for human consumption with regard to their effect onthe quality of the water. Methods of test-Appearance of water
AWWA MTC53946 Applying an Integrated Membrane System to Meet Water Quality Goals for the Indirect Potable Reuse of Tertiary Effluent
CEI UNI EN/ISO 4064-2:2015 Water meters for cold potable water and hot water Part 2: Test methods
NS-ISO 10359-1:1992 Water quality - Determination of fluoride - Part 1: Electrochemical probe method for potable and lightly polluted water
AWWA JAW62662 Journal AWWA — Measuring Quality — the Development of Methods to Assess Drinking Water

German Institute for Standardization

DIN 1988-100:2011-08 Codes of practice for drinking water installations - Part 100: Protection of drinking water, drinking water quality control; DVGW code of practice / Note: Applies in conjunction with DIN EN 1717 (2011-08).
DIN 1988-4:1988 Drinking water supply systems; drinking water protection and drinking water quality control (DVGW code of practice)
DIN 1988-100:2011 Codes of practice for drinking water installations - Part 100: Protection of drinking water, drinking water quality control; DVGW code of practice
DIN EN ISO 7887:2012 Water quality - Examination and determination of colour (ISO 7887:2011); German version EN ISO 7887:2011
DIN EN 17892:2022-09 Water quality - Determination of the sum of perfluorinated substances (Sum of PFAS) in drinking water - Method using liquid chromatography/mass spectrometry (LC/MS); German and English version prEN 17892:2022 / Note: Date of issue 2022-08-12
DIN EN ISO 19250:2013-06 Water quality - Detection of Salmonella spp. (ISO 19250:2010); German version EN ISO 19250:2013
DIN EN ISO 4064-2/A11:2023-02 Water meters for cold potable water and hot water - Part 2: Test methods (ISO 4064-2:2014); German version EN ISO 4064-2:2017/A11:2022
DIN EN 17892:2022 Water quality - Determination of the sum of perfluorinated substances (Sum of PFAS) in drinking water - Method using liquid chromatography/mass spectrometry (LC/MS); German and English version prEN 17892:2022
DIN 4753-11:1990 Water heaters and hot water systems for drinking and service water; indirect heat exchangers; requirements, testing and marking
DIN EN ISO 4064-2:2017-10 Water meters for cold potable water and hot water - Part 2: Test methods (ISO 4064-2:2014); German version EN ISO 4064-2:2017 / Note: This standard is part of the DVGW body of rules.

RO-ASRO

SR 1343-1-1995 Water supplies. Determination of drinking water supply quantities for settlements
STAS 6327-1981 DRINKING WATER Determination of zinc
STAS 11184-1978 DRINKING WATER Cadmium determination
STAS 6323-1988 DRINKING WATER Turbidity determination
STAS 6325-1975 DHLXKING WATER Determinalion of pH
STAS 6322-1961 drinking water. Color determination
STAS 10258-1975 DRINKING WATER Determination of barium
STAS 6364-1978 DRINKING WATER Determination of residual chlorine
STAS 6363-1976 DRINKING WATER Determination of alkalinity and acidity
STAS 6362-1985 DRINKING WATER Lead determinatlon
STAS 3223/1-1980 ORINKING WATER Potassiiim determination
STAS 1342-1984 DRINKING WATER
STAS 3264-1981 DRINKING WATER Manganese determination
STAS 3048/1-1977 DRINKING WATE& Determination of nitrates
STAS 3223/2-1980 DRINKINGD WATER Natrium Determination
STAS 10267-1989 DRINKING WATER Mercury content determination
STAS 3026-1976 DRINKING WATER Determination of hardness
STAS 12663-1988 DRINKING WATER Selenium content determination
STAS 3662-1990 Drinking water. Calcium content determination
STAS 6328-1985 DRINKING WATER Ammonia dctcrmination
STAS 6326-1990 Drinking water. Aluminium content determination
STAS 3265-1986 DRINKING WATER Phosphates determination
STAS 6674-1977 DRINKING WAIER Determination of magnesium
STAS 6327-1969 drinking water. Determination of zinc content
STAS 3086-1968 drinking water. Determination of iron content
STAS 3224-1969 drinking water. Determination of copper content

Korean Agency for Technology and Standards (KATS)

KS M 9114-1996 Water quality-Sampling(Guidance on sampling of drinking water and water used for food and beverage processing)
KS B 50049-3-2019 Water meters intended for the metering of cold potable water — Part 3: Test report format
KS I ISO 6340-2019 Water quality－Detection of salmonella species
KS I ISO 10359-1:2006 Water quality-Determination of fluoride-Part 1:Electrochemical probe method for potable and lightly polluted water

International Organization for Standardization (ISO)

ISO/CD 4064-3 Water meters for cold potable water and hot water — Part 3: Test report format
ISO 5667-5:1991 Water quality; sampling; part 5: guidance on sampling of drinking water and water used for food and beverage processing
ISO/TS 24541:2020 Service activities relating to drinking water supply, wastewater and stormwater systems - Guidelines for the implementation of continuous monitoring systems for drinking water quality and operational parameters in drinking water distribution networks
ISO 10359-1:1992 Water quality; determination of fluoride; part 1: electrochemical probe method for potable and lightly polluted water
ISO 7887:1985 Water quality; Examination and determination of colour

GSO

GSO 378:1994 Methods of test for drinking and mineral water - Part 3: Routine microbiological tests
OS GSO 257:1994 METHODS OF TEST FOR DRINKING AND MINERAL WATER-PART 10: DETERMINATION OF MINERAL
GSO ISO/TS 24541:2023 Service activities relating to drinking water supply, wastewater and stormwater systems — Guidelines for the implementation of continuous monitoring systems for drinking water quality and operational parameters in drinking water distribution networks
BH GSO ISO/TS 24541:2023 Service activities relating to drinking water supply, wastewater and stormwater systems — Guidelines for the implementation of continuous monitoring systems for drinking water quality and operational parameters in drinking water distribution networks
GSO 641:1996 METHODS OF TEST FOR DRINKING AND MINERAL WATER -- PART 5: DETERMINATION OF TOTAL HARDNESS, CALCIUM AND MAGNESIUM
OS GSO ISO 10359-1:2013 Water quality -- Determination of fluoride -- Part 1: Electrochemical probe method for potable and lightly polluted water
OS GSO ISO 19250:2013 Water quality - Detection of Salmonella spp.
BH GSO ISO 10359-1:2016 Water quality -- Determination of fluoride -- Part 1: Electrochemical probe method for potable and lightly polluted water
OS GSO ISO 4064-2:2017 WATER METERS FOR COLD POTABLE WATER AND HOT WATER -- PART 2: TEST METHODS
GSO 818:1997 METHODS OF TEST FOR DRINKING AND MINERAL WATER - PART 15: NON-ROUTINE MICROBIOLOGICAL TESTS

RU-GOST R

GOST 4192-1982 Drinking water. Methods for determination of mineral nitrogen-containing matters
GOST 4152-1989 Drinking water. Method for determination of arsenic mass concentration
GOST 18165-1989 Drinking water. Method for determination of aluminium mass concentration
GOST 2874-1982 Drinking water. Hygienic requirements and quality control
GOST 18294-1989 Drinking water. Method for determination of berillium mass concentration
GOST 31954-2012 Drinking water. Methods of hardness determination

VN-TCVN

TCVN 5294-1995 Water quality.Principle for choice and quality assessment of water sources for drinking and household water supply
TCVN 6195-1996 Water quality.Determination of fluoride.Part 1: Electrochemical probe method for potable and lightly polluted water
TCVN 2674-1978 Drinking water.Determination of beryllium content

Danish Standards Foundation

DS/ISO/TS 24541:2020 Service activities relating to drinking water supply, wastewater and stormwater systems – Guidelines for the implementation of continuous monitoring systems for drinking water quality and operational parameters in drinking water distribution networks

GOST

GOST 4386-1981 Drinking water. Methods for determining the mass concentration of fluorine

NZ-SNZ

AS/NZS 5667.5:1998 Water Quality - Sampling Part 5: Guidance on Sampling of Drinking Water and Water Used for Food and Beverage Processing

AENOR

UNE 28508:1978 AIRCRAFT. CONNECTION FOR WATER OF DRINKABLE QUALITY.
UNE 77044-1:2002 Water quality -- Determination of fluoride -- Part 1: Electrochemical probe method for potable and lightly polluted water.

Indonesia Standards

SNI 06-4592-1998 Guidance on sampling of drinking water and water for food processing
SNI 7812-2013 Air minum embun
SNI 01-0220-1987 Drinking water
SNI 03-6817-2002 Test methods of water quality for being used in concretes

British Standards Institution (BSI)

PD ISO/TS 24541:2020 Service activities relating to drinking water supply, wastewater and stormwater systems. Guidelines for the implementation of continuous monitoring systems for drinking water quality and operational parameters in drinking water distribution networks
BS PD ISO/TS 24541:2020 Service activities relating to drinking water supply, wastewater and stormwater systems. Guidelines for the implementation of continuous monitoring systems for drinking water quality and operational parameters in drinking water distribution networks
BS 6068 Sec.6.5:1991 Water quality. Sampling. Guidance on sampling of drinking water and water used for food and beverage processing
BS ISO 24512:2007 Activities relating to drinking water and wastewater services. Guidelines for the management of drinking water utilities and for the assessment of drinking water services

TH-TISI

TIS 257-2006 Drinking-water

TR-TSE

TS 266-1965 DRINKING VVATERS

CO-ICONTEC

ICONTEC 1454-1979 Drinking water, measurement of boron
ICONTEC 1198-1981 Drinking water, measurement of lead

European Committee for Standardization (CEN)

EN ISO 7887:2011 Water quality - Examination and determination of colour (ISO 7887:2011)

ZA-SANS

SANS 6340:2004 Water quality - Detection of Salmonella species
SANS 241:2006 Drinking water
SANS 10359-1:2002 Water quality - Determination of fluoride Part 1: Electrochemical probe method for potable and lightly polluted water