ISO 10965:2011

INTERNATIONAL ISO
STANDARD 10965
Second edition
2011-07-01
Textile floor coverings — Determination
of electrical resistance
Revêtements de sol textiles — Détermination de la résistance électrique

Reference number
©
ISO 2011
©  ISO 2011
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Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
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International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 10965 was prepared by Technical Committee ISO/TC 219, Floor coverings.
This second edition cancels and replaces the first edition (ISO 10965:1998). It also incorporates the Technical
Corrigendum ISO 10965:1998/Cor.1:1999, which has been technically revised.

INTERNATIONAL STANDARD ISO 10965:2011(E)

Textile floor coverings — Determination of electrical resistance
1 Scope
This International Standard describes a laboratory method for the determination of the electrical resistance of
textile floor coverings. The method includes both horizontal and vertical measurements.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 1957, Machine-made textile floor coverings — Selection and cutting of specimens for physical tests
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
horizontal resistance
surface resistance
electrical resistance measured between two electrodes placed on the surface of a floor covering
3.2
vertical resistance
surface to back
electrical resistance measured between the surface and the back of a floor covering
3.3
resistance to earth
electrical resistance measured between the surface of a floor covering and the earth
3.4
geometric mean
th
n root of the product of n numbers
4 Principle
The horizontal and the vertical resistances of a conditioned test specimen are measured using a
high-resistance meter and electrodes under a controlled atmosphere. Horizontal resistance measurement is
appropriate for evaluating a floor covering's ability to act as a charge sink. Vertical resistance measurement
is appropriate for evaluating a floor covering's ability to conduct charge through to a charge sink beneath it.
The resistance to earth measurement is intended for in-situ measurements since the results depend on the
quality of the electrical earth during the measurement.
5 Apparatus
5.1 Calibrated high-resistance meter, having changeable nominal open circuit voltages of 500 V and
100 V, and a short-circuit current limited to 10 mA capable of reading resistances from (1 × 10 ) Ω to
9 9
(1 × 10 ) Ω to an accuracy of ±5 % and over (1 × 10 ) Ω to an accuracy of ±10 %. The voltage to be applied
shall be chosen from Table 1.
NOTE 1 An equivalent system is a separate voltage source of equivalent capability and a calibrated milliamp meter.
Resistance (R) is then calculated by dividing voltage by amperage (I):
R = U/I
Table 1 — Circuit voltages
Resistance, R
Voltage, U
Ω V
≤10
>10
NOTE 2 The threshold depends on the apparatus.
5.2 Two metal electrodes (preferably stainless steel), with terminals to make connections to the resistance
meter. Each electrode shall weigh a total of (5,0 ± 0,1) kg, and shall have a flat circular contact area of
(65 ± 2) mm in diameter.
NOTE 1 A large (non-conductive) disc may be added as a support platform for the additional weights (see Figure 1).
NOTE 2 To improve the electrical conductivity between the electrode and the sample, the underside of the electrode
may be covered with a conductive rubber material,
...