Search book title
Filters:
FORMAT
BOOKS
All Books
PACKAGES
All Packages
EDITION
to
PUBLISHER
AABC
(1)
AAMI
(337)
ACI
(589)
AISC
(54)
ASA
(234)
ASCE
(996)
ASHRAE
(657)
ASME
(2161)
ASSE
(117)
ASTM
(94394)
AWC
(54)
AWWA
(568)
BHMA
(124)
BICSI
(33)
BIFMA
(21)
BOMA
(20)
BSI
(94534)
CHD
(3)
CRSI
(17)
IAHSS
(1)
IAPMO
(374)
ICC
(315)
IEEE
(6731)
IES
(241)
ISEA
(16)
Joint Commission
(184)
Joint Commission Int.
(1)
NETA
(6)
NFPA
(1646)
TCNA
(17)
TMS
(19)
USGBC
(28)
WILEY
(4)
 
AR
(6)
AZ
(7)
CA
(115)
CT
(3)
FL
(57)
ID
(5)
IL
(5)
IN
(1)
KY
(1)
LA
(2)
MI
(25)
MN
(27)
NC
(27)
NJ
(13)
NY
(61)
OH
(24)
OR
(22)
PA
(7)
RI
(8)
SC
(20)
SD
(1)
TX
(3)
VA
(50)
VT
(6)
WA
(31)
CONTENT TYPE
 Act
 Admin Code
 Announcements
 Bill
 Book
 CADD File
 CAN
 CEU
 Charter
 Checklist
 City Code
 Code
 Commentary
 Comprehensive Plan
 Conference Paper
 County Code
 Course
 DHS Documents
 Document
 Errata
 Executive Regulation
 Federal Guideline
 Firm Content
 Guideline
 Handbook
 Interpretation
 Journal
 Land Use and Development
 Law
 Legislative Rule
 Local Amendment
 Local Code
 Local Document
 Local Regulation
 Local Standards
 Manual
 Model Code
 Model Standard
 Notice
 Ordinance
 Other
 Paperback
 PASS
 Periodicals
 PIN
 Plan
 Policy
 Product
 Product - Data Sheet
 Program
 Provisions
 Requirements
 Revisions
 Rules & Regulations
 Standards
 State Amendment
 State Code
 State Manual
 State Plan
 State Standards
 Statute
 Study Guide
 Supplement
 Sustainability
 Technical Bulletin
 All
  • BSI
    BS EN ISO 7393-2:2018 Water quality. Determination of free chlorine and total chlorine - Colorimetric method using N,N-dialkyl-1,4-phenylenediamine, for routine control purposes
    Edition: 2018
    $435.35
    / user per year

Description of BS EN ISO 7393-2:2018 2018

This document specifies a method for the determination of free chlorine and total chlorine in water, readily applicable to lab- and field-testing. It is based on measurement of the absorption, the red DPD colour complex in a photometer or the colour intensity by visual comparison of the colour with a scale of standards that is regularly calibrated.

This method is appropriate for drinking water and other waters, where additional halogens like bromine, iodine and other oxidizing agents are present in almost negligible amounts. Seawater and waters containing bromides and iodides comprise a group for which special procedures are to be carried out.

This method is in practice applicable to concentrations, in terms of chlorine (Cl2), from, for example, 0,000 4 mmol/l to 0,07 mmol/l (e.g. 0,03 mg/l to 5 mg/l) total chlorine. For higher concentrations, the test portion is diluted.

Commonly, the method is applied as a field method with mobile photometers and commercially available ready-for-use reagents (liquid reagents, powders and tablets). It is essential that those reagents comply with minimum requirements and contain the essential reagents and a buffer system suitable to adjust the measurement solution to a pH range of typically 6,2 to 6,5. If there is doubt that water samples have uncommon pH values and/or buffer capacities, the user has to check and, if necessary, to adjust the sample pH to the required range. The pH of the sample is within the range of pH 4 and 8. Adjust, if necessary, with sodium hydroxide solution or sulfuric acid before the test.

A procedure for the differentiation of combined chlorine of the monochloramine type, combined chlorine of the dichloramine type and combined chlorine in the form of nitrogen trichloride is presented in Annex A. In Annex C, a procedure is presented for the determination of free and total chlorine in drinking and other low polluted waters, for disposable planar reagent-filled cuvettes using a mesofluidic channel pump/colorimeter.



Standard NumberBS EN ISO 7393-2:2018
TitleWater quality. Determination of free chlorine and total chlorine - Colorimetric method using N,N-dialkyl-1,4-phenylenediamine, for routine control purposes
StatusConfirmed
Publication Date2018-05-11
ReplacesBS EN ISO 7393-2:2000
Identical National Standard OfEN ISO 7393-2:2018, ISO 7393-2:2017
CorrectsBS EN ISO 7393-2:2018
DescriptorsInterferences (chemical), Colorimetry, Water resources, Reproducibility, Concentration (chemical), Amines (aliphatic), Chemical analysis and testing, Quality, Testing conditions, Determination of content, Calibration, Water testing, Bibliography, Chlorides, Specimen preparation, Chlorine, Wastes, Water
ICS13.060.50 Examination of water for chemical substances
CommitteeEH/3/2
ISBN978 0 580 85377 7
PublisherBSI
Pages26

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
GROUPS
X