ISO 8795:2001 PDF

Plastics piping systems for the transport of water intended for human consumption — Migration assessment — Determination of migration values of plastics pipes and fittings and their joints

Open preview (PDF)

Title (English):

ISO 8795:2001

Plastics piping systems for the transport of water intended for human consumption — Migration assessment — Determination of migration values of plastics pipes and fittings and their joints

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 15
Publication date:: March 1, 2001
Edition:: ISO IS 8795 edition 3 version 1
ICS:: 23.040.20

Delivery type:

Full version25 €Read online 24h10 €Read online 72h15 €

Document language:

enru

Delivery time:Immediate download

Price:25 €

Description (English):

La norme internationale spécifie une méthode de détermination de la migration des constituants extraits de la face intérieure des tubes, raccords et assemblages en matières plastiques. Les déterminations organoleptiques et microbiologiques ne sont pas comprises. Cette norme est applicable à tous les tubes, raccords et assemblages plastiques utilisables pour le transport de l'eau destinée à la consommation humaine et de l'eau brute utilisée pour la production d'eau potable. Elle concerne tous les constituants d'un tube, raccord ou assemblage terminé extractibles par l'eau. Elle fournit un mode opératoire de rechange pour le cas où la dimension du tube, du raccord ou de l'assemblage l'impose. NOTE 1 On suppose que les normes ou les règlements qui font référence à la présente norme comprennent l'information suivante (voir aussi la note de l'article 4): a) le choix du (des) liquide(s) d'essai (voir 5.3); b) le choix de la (les) température(s) (voir l'article 6) d'essai. NOTE 2 Les procédures de pré-traitement, liquides et températures d'essai mentionnés dans la présente norme couvrent la situation présente. Lorsque des conditions nouvelles et/ou différentes seront formulées (actuellement en discussion) la norme sera amendée en conséquence.

Technical details

Technical committee: ISO/TC 138/SC 5 - General properties of pipes, fittings and valves of plastic materials and their accessories -- Test methods and basic specifications
SKU: ISO 8795:2001

Abstract

Overview

ISO 8795:2001 defines a standardized migration assessment method for plastics piping systems used to transport water intended for human consumption. The standard specifies how to determine migration values - the mass of constituents that can move from the internal surface of plastics pipes, fittings and their joints into water under defined conditions. It covers test-piece preparation, selection of test liquids, controlled test temperatures, exposure regimes and analysis procedures. Organoleptic and microbiological assessments are explicitly excluded.

Key Topics and Requirements

Scope: Applies to all plastics pipes, fittings and joints for drinking water and raw water used in producing drinking water.
Test principle: Stagnation and prewashing with tap water, followed by exposure to specified test liquids for defined migration periods; analyze migration liquids for migrating constituents.
Test liquids: Includes high-purity water, chlorinated water (≈1 mg/l Cl), acidic water (pH 4.5), chlorinated acidic, alkaline water type I (pH 9 - European), alkaline type II (pH 11 - non-European), and neutral water (pH 7 - non-European). (Annex A describes preparation.)
Test temperatures: Typical temperatures are (23 ± 2) °C for cold water, (60 or 70 ± 2) °C for warm water, (90 ± 2) °C for hot water, and (27 ± 2) °C for tropical conditions.
Surface-area-to-volume (S/V) ratio: Minimum S/V requirement to ensure meaningful results - not less than 5 (dm⁻¹) (surface area in dm², volume in litres).
Test pieces: Preparation rules ensure only water-contacting surfaces are exposed; special procedures apply for large-diameter pipes, fittings and joints (Annex B).
Procedure steps: stagnation → prewashing → migration exposures → analytical determination → expression of migration values and reporting.
Apparatus and materials: Use inert containers and stoppers (glass, PTFE, stainless steel) and thermostatically controlled enclosures.

Applications and Who Uses It

ISO 8795:2001 is used by:

Manufacturers of plastic pipes, fittings and joints for product development and internal quality control.
Testing laboratories conducting compliance and type testing to quantify extractable substances.
Regulators and certification bodies assessing conformity with drinking-water safety requirements.
Water utilities, system designers and specifiers for material selection and procurement specifications.
R&D teams investigating material formulations, stabilizers or ageing effects.

Practical uses include compliance testing, material comparison, failure/root-cause analysis, and creating procurement or regulatory test requirements.

Related Standards

Normative references: EN ISO 3696 (water for analytical use) and ISO 7393‑2 (chlorine determination).
ISO 8795 is part of a series of test methods supporting plastics piping system standards and was prepared in cooperation with CEN/TC 155 and ISO/TC 138.

Keywords: ISO 8795:2001, migration assessment, plastics piping systems, migration values, pipes fittings joints, drinking water testing, test liquids, S/V ratio, test temperatures.

Related standards

Standards mentioned in the description

Abstract

Overview

Key Topics and Requirements

Scope: Applies to all plastics pipes, fittings and joints for drinking water and raw water used in producing drinking water.
Test principle: Stagnation and prewashing with tap water, followed by exposure to specified test liquids for defined migration periods; analyze migration liquids for migrating constituents.
Test liquids: Includes high-purity water, chlorinated water (≈1 mg/l Cl), acidic water (pH 4.5), chlorinated acidic, alkaline water type I (pH 9 - European), alkaline type II (pH 11 - non-European), and neutral water (pH 7 - non-European). (Annex A describes preparation.)
Test temperatures: Typical temperatures are (23 ± 2) °C for cold water, (60 or 70 ± 2) °C for warm water, (90 ± 2) °C for hot water, and (27 ± 2) °C for tropical conditions.
Surface-area-to-volume (S/V) ratio: Minimum S/V requirement to ensure meaningful results - not less than 5 (dm⁻¹) (surface area in dm², volume in litres).
Test pieces: Preparation rules ensure only water-contacting surfaces are exposed; special procedures apply for large-diameter pipes, fittings and joints (Annex B).
Procedure steps: stagnation → prewashing → migration exposures → analytical determination → expression of migration values and reporting.
Apparatus and materials: Use inert containers and stoppers (glass, PTFE, stainless steel) and thermostatically controlled enclosures.

Applications and Who Uses It

ISO 8795:2001 is used by:

Manufacturers of plastic pipes, fittings and joints for product development and internal quality control.
Testing laboratories conducting compliance and type testing to quantify extractable substances.
Regulators and certification bodies assessing conformity with drinking-water safety requirements.
Water utilities, system designers and specifiers for material selection and procurement specifications.
R&D teams investigating material formulations, stabilizers or ageing effects.

Practical uses include compliance testing, material comparison, failure/root-cause analysis, and creating procurement or regulatory test requirements.

Related Standards

Normative references: EN ISO 3696 (water for analytical use) and ISO 7393‑2 (chlorine determination).
ISO 8795 is part of a series of test methods supporting plastics piping system standards and was prepared in cooperation with CEN/TC 155 and ISO/TC 138.

Keywords: ISO 8795:2001, migration assessment, plastics piping systems, migration values, pipes fittings joints, drinking water testing, test liquids, S/V ratio, test temperatures.

ISO 8795:2001 PDF

Technical details

Abstract

Overview

Key Topics and Requirements

Applications and Who Uses It

Related Standards

Related standards

Abstract

Overview

Key Topics and Requirements

Applications and Who Uses It

Related Standards

Related standards

Water for analytical laboratory use. Specification and test methods.

Water quality - Determination of free chlorine and total chlorine - Part 2: Colorimetric method using N,N-dia…

Plastics piping systems for the transport of water intended for human consumption - Migration assessment - De…