SIST ISO 15305:1998

Corps gras d'origines animale et végétale -- Détermination de la couleur Lovibond

Živalske in rastlinske maščobe in olja - Določevanje barve po Lovibondu

General Information

• Status: Published
• Publication Date: 30-Nov-1998
• ICS: 67.200.10 - Animal and vegetable fats and oils
• Technical Committee: KŽP - Agricultural food products
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-1998
• Due Date: 01-Dec-1998
• Completion Date: 01-Dec-1998
• Ref Project: ISO 15305:1998 - Animal and vegetable fats and oils — Determination of Lovibond colour

Overview

SIST ISO 15305:1998 establishes the standardized procedure for the determination of Lovibond colour in animal and vegetable fats and oils. This international standard, developed by ISO Technical Committee 34 (Agricultural food products), provides a method to accurately assess and express the colour characteristics of fats and oils using Lovibond units. Colour measurement is a critical quality attribute in the food and agricultural industry, impacting product classification, consumer perception, and marketability.

Key Topics

• Scope and Objective
  The standard specifies a method for evaluating the Lovibond colour of both animal and vegetable fats and oils, ensuring results are precise and comparable across laboratories.

• Principle of the Method
  The procedure relies on visually matching the colour of a liquid fat or oil sample, viewed through a specified path length, with the colour observed through standardized Lovibond glass colour standards.

• Apparatus and Equipment

  • Lovibond universal tintometers, Model F (BS684) or Model F/C
  • Lighting cabinets equipped with Skan Blue daylight correction filters and diffusing lenses
  • Glass colour racks containing precisely calibrated Lovibond standards (red, yellow, blue, neutral)
  • High-quality optical glass cells of standard path lengths
  • Routine cleaning and maintenance guidance for apparatus and colour standards to ensure accuracy

• Sampling and Sample Preparation
  Emphasis is placed on using representative samples (reference to ISO 5555 for sampling procedure) and preparing test samples according to ISO 661, ensuring fats or oils are fully liquid, clear, and bright at the time of measurement.

• Operator Requirements
  Operators must have verified normal colour vision and avoid using tinted eyewear during tests. Regular vision checks by qualified professionals are recommended.

• Test Procedure
  Includes steps for measuring, sample and apparatus handling, and safeguards to minimize operator fatigue and maximize repeatability.

• Expression and Reporting of Results
  Results are to be reported in Lovibond units, detailing the cell path length used, with full documentation of method deviations and sample identification.

Applications

• Quality Control in Production
  The method is widely used in food manufacturing, refining, and processing environments to ensure product consistency and compliance with quality standards.

• Product Specification and Classification
  Food producers, traders, and regulatory agencies utilize Lovibond colour data to classify fats and oils, determine grade, and assure adherence to legal and contractual requirements.

• Research and Development
  Laboratories and research centers apply this method for the development of new edible oil and fat products, supporting sensory analyses and shelf-life studies.

• Trade and Export Compliance
  Lovibond colour assessment is a common requirement in international trade documentation involving animal and vegetable fats and oils.

Related Standards

• ISO 661:1989 - Animal and vegetable fats and oils - Preparation of test sample
  Reference for preparing samples before conducting Lovibond colour determination.

• ISO 5555:1991 - Animal and vegetable fats and oils - Sampling
  Provides guidance for obtaining representative samples for analysis.

• ISO 5725-1:1994 & ISO 5725-2:1994 - Accuracy (trueness and precision) of measurement methods and results
  General framework for assessing the repeatability and reproducibility of test methods, referenced for precision data in this standard.

Practical Value

Adopting SIST ISO 15305:1998 ensures reliable, repeatable, and comparable colour measurements of animal and vegetable fats and oils, which enhances product quality, supports regulatory compliance, facilitates trade, and protects consumer interests. As a recognized international standard, it offers food and agricultural businesses a trusted benchmark for laboratory analysis and quality assurance.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-1998
äLYDOVNHLQUDVWOLQVNHPDãþREHLQROMD'RORþHYDQMHEDUYHSR/RYLERQGX
Animal and vegetable fats and oils -- Determination of Lovibond colour
Corps gras d'origines animale et végétale -- Détermination de la couleur Lovibond
Ta slovenski standard je istoveten z: ISO 15305:1998
ICS:
67.200.10 5DVWOLQVNHLQåLYDOVNH Animal and vegetable fats
PDãþREHLQROMD and oils
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL ISO
STANDARD 15305
First edition
1998-09-15
Animal and vegetable fats and oils —
Determination of Lovibond colour
Corps gras d’origines animale et végétale — Détermination de la couleur
Lovibond
A
Reference number
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 non-
governmental, in liaison with ISO, also take part in the work. ISO
collaborates closely with the International Electrotechnical Commission
(IEC) on all matters of electrotechnical standardization.
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.
International Standard ISO 15305 was prepared by ISO/TC 34, Agricultural
food products, Subcommittee SC 11, Animal and vegetable fats and oils.
Annexes A and B of this International Standard are for information only.
©  ISO 1998
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case postale 56 • CH-1211 Genève 20 • Switzerland
Internet [e-mail]
Printed in Switzerland
ii
INTERNATIONAL STANDARD  © ISO ISO 15305:1998(E)
Animal and vegetable fats and oils — Determination of
Lovibond colour
1 Scope
This International Standard specifies a method for the determination of the Lovibond colour of animal and vegetable
fats and oils.
2 Normative reference
The following standard contains provision which, through reference in this text, constitute provisions of this
International Standard. At the time of publication, the edition indicated was valid. All standards are subject to
revision and parties to agreements based on this International Standard are encouraged to investigate the
possibility of applying the most recent edition of the standard indicated below. Members of IEC and ISO maintain
registers of currently valid International Standards.
ISO 661:1989, Animal and vegetable fats and oils — Preparation of test sample.
3 Principle
The colour of the light transmitted through a known path length of liquid fat or oil is matched with the colour of the
light originating from the same source transmitted through glass colour standards. The results are conventionally
expressed in Lovibond units.
4 Apparatus
Usual laboratory apparatus and, in particular, the following.
4.1  Colorimeter
1)
The Lovibond Universal tintometers Model F (BS684) and Model F/C are suitable.
NOTE The older Models AF905 and AF900/C Model E tintometers are suitable but no longer available. The Lovibond
AF710, Lovibond Schofield, Wesson and AOCS colorimeters are NOT suitable.

1)
The Lovibond tintometers and the Munsell Notation 5Y 9/1 are available from The Tintometer Ltd, Waterloo Road, Salisbury,
Wiltshire, SP1 2JY, United Kingdom. These tintometers are examples of products available commercially. This information is
given for the convenience of users of this International Standard and does not constitute an endorsement by ISO of these products.
© ISO
4.2  Lighting cabinet
Any of the models given in 4.2.1 and 4.2.2 are suitable.
4.2.1  Models F (BS684) and Model F/C
The tintometer shall be maintained in a good, clean condition in accordance with the manufacturer's instructions.
The viewing tube shall contain a Skan Blue daylight correction filter and a diffusing lens, and shall have a field of
view subtending 2° at the eye. It shall be mounted in the cabinet such that the sample and the white reference field
are viewed at 60° to the normal.
4.2.2  Tintometer AF905/E, AF900/C and Model E
These are painted internally matt white and contain, behind ground glass diffusing screens, two 60 W pearl
(uncoated) lamps operated at the correct mains voltage and positioned one on either side of the viewing tube so
that each illuminates the white reflecting reference surface at an angle of 45°.
BOTH lamps shall be changed as soon as either envelope shows signs of discoloration and, in any event, after
100 h of use. A suitable logging system shall be used to register lamp usage.
The viewing tube shall contain a Skan Blue daylight correction filter and a diffusing lens and shall have a field of
view subtending 2° at the eye. It shall be mounted in the cabinet such that the sample and white reference field are
viewed at 90° to the normal. The lighting cabinet, diffusing screens and reflectance surfaces shall be kept free from
stains and regularly cleaned. The internal paintwork shall be inspected regularly for ageing/discoloration and shall be
1)
repainted matt white when the surfaces become darker than Munsell Notation 5Y 9/1. The viewing tube shall be
maintained in accordance with the manufacturer's instructions.
4.3  Colour racks
These shall be fitted with colourless compensating slides on the lower section and shall contain glass colour
standards (in Lovibond units) as follows:
Red 0,1 to 0,9 1,0 to 9,0 10,0 and 70,0
Yellow 0,1 to 0,9 1,0 to 9,0 10,0 to 70,0
Blue 0,1 to 0,9 1,0 to 9,0 10,0 to 40,0
Neutral 0,1 to 0,9 1,0 to 3,0
The colour standards shall be kept clean and free from oil and grease by wiping with cotton buds dipped in warm
water containing detergent and dried by wiping with cotton wool. Solvents shall not be used for cleaning.
NOTE Certified Conformance glass colour standards (available from The Tintometer
...

INTERNATIONAL ISO
STANDARD 15305
First edition
1998-09-15
Animal and vegetable fats and oils —
Determination of Lovibond colour
Corps gras d’origines animale et végétale — Détermination de la couleur
Lovibond
A
Reference number
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 non-
governmental, in liaison with ISO, also take part in the work. ISO
collaborates closely with the International Electrotechnical Commission
(IEC) on all matters of electrotechnical standardization.
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.
International Standard ISO 15305 was prepared by ISO/TC 34, Agricultural
food products, Subcommittee SC 11, Animal and vegetable fats and oils.
Annexes A and B of this International Standard are for information only.
©  ISO 1998
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case postale 56 • CH-1211 Genève 20 • Switzerland
Internet [e-mail]
Printed in Switzerland
ii
INTERNATIONAL STANDARD  © ISO ISO 15305:1998(E)
Animal and vegetable fats and oils — Determination of
Lovibond colour
1 Scope
This International Standard specifies a method for the determination of the Lovibond colour of animal and vegetable
fats and oils.
2 Normative reference
The following standard contains provision which, through reference in this text, constitute provisions of this
International Standard. At the time of publication, the edition indicated was valid. All standards are subject to
revision and parties to agreements based on this International Standard are encouraged to investigate the
possibility of applying the most recent edition of the standard indicated below. Members of IEC and ISO maintain
registers of currently valid International Standards.
ISO 661:1989, Animal and vegetable fats and oils — Preparation of test sample.
3 Principle
The colour of the light transmitted through a known path length of liquid fat or oil is matched with the colour of the
light originating from the same source transmitted through glass colour standards. The results are conventionally
expressed in Lovibond units.
4 Apparatus
Usual laboratory apparatus and, in particular, the following.
4.1  Colorimeter
1)
The Lovibond Universal tintometers Model F (BS684) and Model F/C are suitable.
NOTE The older Models AF905 and AF900/C Model E tintometers are suitable but no longer available. The Lovibond
AF710, Lovibond Schofield, Wesson and AOCS colorimeters are NOT suitable.

1)
The Lovibond tintometers and the Munsell Notation 5Y 9/1 are available from The Tintometer Ltd, Waterloo Road, Salisbury,
Wiltshire, SP1 2JY, United Kingdom. These tintometers are examples of products available commercially. This information is
given for the convenience of users of this International Standard and does not constitute an endorsement by ISO of these products.
© ISO
4.2  Lighting cabinet
Any of the models given in 4.2.1 and 4.2.2 are suitable.
4.2.1  Models F (BS684) and Model F/C
The tintometer shall be maintained in a good, clean condition in accordance with the manufacturer's instructions.
The viewing tube shall contain a Skan Blue daylight correction filter and a diffusing lens, and shall have a field of
view subtending 2° at the eye. It shall be mounted in the cabinet such that the sample and the white reference field
are viewed at 60° to the normal.
4.2.2  Tintometer AF905/E, AF900/C and Model E
These are painted internally matt white and contain, behind ground glass diffusing screens, two 60 W pearl
(uncoated) lamps operated at the correct mains voltage and positioned one on either side of the viewing tube so
that each illuminates the white reflecting reference surface at an angle of 45°.
BOTH lamps shall be changed as soon as either envelope shows signs of discoloration and, in any event, after
100 h of use. A suitable logging system shall be used to register lamp usage.
The viewing tube shall contain a Skan Blue daylight correction filter and a diffusing lens and shall have a field of
view subtending 2° at the eye. It shall be mounted in the cabinet such that the sample and white reference field are
viewed at 90° to the normal. The lighting cabinet, diffusing screens and reflectance surfaces shall be kept free from
stains and regularly cleaned. The internal paintwork shall be inspected regularly for ageing/discoloration and shall be
1)
repainted matt white when the surfaces become darker than Munsell Notation 5Y 9/1. The viewing tube shall be
maintained in accordance with the manufacturer's instructions.
4.3  Colour racks
These shall be fitted with colourless compensating slides on the lower section and shall contain glass colour
standards (in Lovibond units) as follows:
Red 0,1 to 0,9 1,0 to 9,0 10,0 and 70,0
Yellow 0,1 to 0,9 1,0 to 9,0 10,0 to 70,0
Blue 0,1 to 0,9 1,0 to 9,0 10,0 to 40,0
Neutral 0,1 to 0,9 1,0 to 3,0
The colour standards shall be kept clean and free from oil and grease by wiping with cotton buds dipped in warm
water containing detergent and dried by wiping with cotton wool. Solvents shall not be used for cleaning.
NOTE Certified Conformance glass colour standards (available from The Tintometer Ltd), can be used to check that the
instrument is operating correctly.
4.4  Spillage tray
This is required for the Model Type E only.
4.5  Glass cells
These shall be made of good quality optical glass and shall have a good standard finish, with optical path lengths as
follows:
1,6 mm (1/16 inch); 3,2 mm (1/8 inch); 6,4 mm (1/4 inch); 12,7 mm (1/2 inch); 25,4 mm (1 inch); 76,2 mm
(3 inch); 133,4 mm (5 1/4 inch).
©
...

NORME ISO
INTERNATIONALE 15305
Première édition
1998-09-15
Corps gras d’origines animale et
végétale — Détermination de la couleur
Lovibond
Animal and vegetable fats and oils — Determination of Lovibond colour
A
Numéro de référence
Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération
mondiale d'organismes nationaux de normalisation (comités membres de
l'ISO). L'élaboration des Normes internationales est en général confiée aux
comités techniques de l'ISO. Chaque comité membre intéressé par une
étude a le droit de faire partie du comité technique créé à cet effet. Les
organisations internationales, gouvernementales et non gouvernementales,
en liaison avec l'ISO participent également aux travaux. L'ISO collabore
étroitement avec la Commission électrotechnique internationale (CEI) en ce
qui concerne la normalisation électrotechnique.
Les projets de Normes internationales adoptés par les comités techniques
sont soumis aux comités membres pour vote. Leur publication comme
Normes internationales requiert l'approbation de 75 % au moins des
comités membres votants.
La Norme internationale ISO 15305 a été élaborée par le comité technique
ISO/TC 34, Produits agricoles alimentaires, sous-comité SC 11, Corps gras
d’origines animale et végétale.
Les annexes A et B de la présente Norme internationale sont données
uniquement à titre d’information.
©  ISO 1998
Droits de reproduction réservés. Sauf prescription différente, aucune partie de cette publi-
cation ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun pro-
cédé, électronique ou mécanique, y compris la photocopie et les microfilms, sans l'accord
écrit de l'éditeur.
Organisation internationale de normalisation
Case postale 56 • CH-1211 Genève 20 • Suisse
Internet [e-mail]
Imprimé en Suisse
ii
NORME INTERNATIONALE  © ISO ISO 15305:1998(F)
Corps gras d'origines animale et végétale — Détermination
de la couleur Lovibond
1 Domaine d’application
La présente Norme internationale spécifie une méthode de détermination de la couleur Lovibond des corps gras
d'origines animale et végétale.
2 Référence normative
La norme suivante contient des dispositions qui, par suite de la référence qui en est faite, constituent des
dispositions valables pour la présente Norme internationale. Au moment de la publication, l’édition indiquée était en
vigueur. Toute norme est sujette à révision et les parties prenantes des accords fondés sur la présente Norme
internationale sont invitées à rechercher la possibilité d'appliquer l’édition la plus récente de la norme indiquée ci-
après. Les membres de la CEI et de l'ISO possèdent le registre des Normes internationales en vigueur à un
moment donné.
ISO 661:1989, Corps gras d'origines animale et végétale — Préparation de l'échantillon pour essai.
3 Principe
La couleur de la lumière transmise au travers d'une épaisseur connue de corps gras liquide est comparée à la
couleur de la lumière émise par la même source et transmise à travers des étalons chromatiques en verre. Les
résultats sont exprimés, par convention, en unités Lovibond.
4 Appareillage
Matériel courant de laboratoire et, en particulier, ce qui suit.
4.1  Colorimètre
1)
Les comparateurs de teintes Lovibond Universal modèle F (BS684) et modèle F/C se sont révélés appropriés.
NOTE Les comparateurs de teintes Lovibond Universal AF905 modèle E et AF900/C modèle E de type ancien se sont
révélés appropriés mais ne sont plus disponibles. Les colorimètres Lovibond AF710, Lovibond Schofield, Wesson et AOCS
NE SONT PAS appropriés.
1) Les comparateurs de teintes Lovibond, ainsi que le système de notation Munsell 5Y 9/1, sont disponibles auprès de
The Tintometer Ltd., Waterloo Road, Salisbury, Wiltshire SP1 2JY (Royaume-Uni). Ces comparateurs de teintes sont des
exemples de produits disponibles dans le commerce. Cette information est donnée à l’intention des utilisateurs de la présente
Norme internationale et ne signifie nullement que l’ISO approuve ou recommande l’emploi exclusif des produits ainsi désignés.
© ISO
4.2  Caisson d’éclairage
Tous les modèles donnés en 4.2.1 et 4.2.2 conviennent.
4.2.1  Modèle F (BS684) et modèle F/C
Le comparateur de teintes doit être maintenu propre et en bon état, conformément aux instructions du fabricant. Le
tube d'observation doit renfermer un filtre de correction de la lumière du jour de type Skan Blue, ainsi qu'une lentille
de diffusion, et doit présenter un champ de vision sous-tendant un arc de 2° par rapport à l'œil. Le tube doit être
monté dans le caisson de telle sorte que l'échantillon et le champ blanc de référence soient visibles à 60° par
rapport à la normale.
4.2.2  Comparateur de teintes AF905/E, AF900/C et modèle E
L'intérieur est uniformément recouvert d'une peinture blanche mate. Il contient deux ampoules de 60 W dépolies
(sans revêtement), situées derrière les écrans en verre destinés à diffuser la lumière et alimentées par la tension
nominale appropriée, chacune étant placée de part et d'autre du tube d'observation, de sorte qu'elles éclairent
respectivement la surface réfléchissante de référence selon un angle de 45°.
LES DEUX lampes doivent être remplacées dès que l'une des enveloppes présente des signes de décoloration et,
dans tous les cas, après toute période d'utilisation de 100 h. L'utilisation d'un système d'enregistrement approprié
doit permettre de tenir un calendrier de l'utilisation des lampes.
Le tube d'observation doit renfermer un filtre de correction de la lumière du jour de type Skan Blue, ainsi qu'une
lentille de diffusion, et doit présenter un champ de vision sous-tendant un arc de 2° par rapport à l'œil. Le tube doit
être monté dans le caisson de telle sorte que l'échantillon et le champ blanc de référence soient visibles à 90° par
rapport à la normale.
Le caisson d'éclairage, les écrans de diffusion et les surfaces réfléchissantes doivent être maintenus exempts de
souillures et faire l'objet d'un nettoyage régulier. La peinture interne doit être vérifiée régulièrement en vue de
déceler le vieillissement/la décoloration et doit être renouvelée en blanc mat en cas de noircissement des surfaces
1)
supérieur à la notation Munsell 5Y 9/1 . Le tube d'observation doit être entretenu conformément aux instructions du
fabricant.
4.3  Présentoirs de couleurs
Les présentoirs de couleurs doivent être équipés de lames en verre compensatrices incolores et contenant des
étalons chromatiques en verre, conformes aux valeurs suivantes (exprimées en unités Lovibond):
Rouge 0,1 à 0,9 1,0 à 9,0 10,0 et 70,0
Jaune 0,1 à 0,9 1,0 à 9,0 10,0 à 70,0
Bleu 0,1 à 0,9 1,0 à 9,0 10,0 à 40,0
Neutre 0,1 à 0,9 1,0 à 3,0
Les étalons chromatiques doivent être maintenus propres et exempts d'huile et de graisse en les essuyant à l'aide
de tampons de coton imbibés d'eau chaude contenant du détergent, puis séchés avec de la ouate. Aucun solvant
ne doit être utilisé pour le nettoyage.
NOTE Des étalons chromatiques en verre certifiés (disponibles auprès de The Tintometer Ltd.) peuvent être employés
pour vérifier le fonctionnement correct de l'appareillage.
4.4  Plateau de travail
Nécessaire uniquement pour le modèle de type E.
© ISO
4.5  Cellules en verre
Les cellules en verre doivent être fabriquées à partir de verre de bonne qualité optique et présentant une finition
normalisée, ainsi que des longueurs de trajet optique conformes aux valeurs suivantes:
1,6 mm (1/16 in); 3,2 mm (1/8 in); 6,4 mm (1/4 in); 12,7 mm (1/2 in); 25,4 mm (1 in); 76,2 mm (3 in);
133,4 mm (5 1/4 in).
5 Exigences relatives a
...