SIST ISO 6670:2026

• Abstract:

  1.1 This document specifies a sampling method for a consignment of instant coffee, shipped in 10 package units or more. ; This document is applicable to cases which have inner linings of moisture-resistant material hermetically sealed because of the hygroscopic nature of instant coffee and which are in package units greater than 10 kg net mass, typically up to 50 kg. This document is also applicable to units of more than 50 kg, usually called “big bags” or “supersacks”. The cases are generally made of cardboard of appropriate strength and the big bags are made of suitable plastic material. ; 1.2 This document is also applicable to the selection and preparation of a sufficiently representative sample of the consignment, which is intended: ; a) to serve as a basis for an offer for sale; ; b) for examination to verify that the instant coffee to be offered for sale satisfies the producer’s sales specification; ; c) for examination to determine one or more of the characteristics of the instant coffee for technical, commercial, administrative and arbitration purposes; ; d) for retention as a reference sample for use, if required, in litigation. ; 1.3 This document is applicable to all types of instant coffee, as defined in ISO 3509, contained in all types of units with liners, with the exception stated in 1.4. ; 1.4 For bulk density and particle size, this document is applicable to spray-dried powder and freeze-dried instant coffees only, as defined in ISO 3509, due to the intrinsic fragility of particles of agglomerated instant coffee, which leads to greater breakdown and headspace in the final packed units for the consumer.

• Status: Published
• Publication Date: 05-Oct-2026
• ICS: 67.140.20 - Coffee and coffee substitutes
• Technical Committee: KŽP - Agricultural food products
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 06-Oct-2026
• Due Date: 11-Dec-2026
• Completion Date: 06-Oct-2026
• Ref Project: ISO 6670:2025 - Instant coffee — Sampling method for bulk units with liners

• Replaces: SIST ISO 6670:2003 - Instant coffee -- Sampling method for bulk units with liners
• Effective Date: 01-Nov-2026

SIST ISO 6670:2026 is the Slovenian standard that adopts ISO 6670:2025 from ISO. It specifies how to sample consignments of instant coffee packed in bulk units with liners, so the sample can represent the lot for sale, technical checks, arbitration, or litigation. It is aimed at samplers, laboratories, buyers, sellers, and quality teams handling instant coffee in lined cases or big bags.

What does SIST ISO 6670:2026 specify?

SIST ISO 6670:2026 specifies a sampling method for consignments of instant coffee shipped in 10 package units or more. It covers lined bulk units such as cardboard cases with moisture-resistant inner liners and larger plastic bulk packs often called big bags or supersacks.

The standard is also written for preparing representative samples for commercial and legal purposes. In practice, that matters because the sample may be used to support an offer for sale, check a sales specification, assess product characteristics, or keep a reference sample for possible litigation.

SIST ISO 6670:2026 applies to all types of instant coffee as defined in ISO 3509, with a narrower application for bulk density and particle size. For those two characteristics, it applies only to spray-dried powder and freeze-dried instant coffees.

The document is organized into:

• Scope
• Normative references
• Terms and definitions
• Requirements
• Sampling equipment
• Procedure
• Packing and marking of samples
• Sampling report
• Precautions during storage and transport of samples
• Annex A with the scoop sampling method

Annex	What it covers
Annex A	Scoop sampling method, including the scoop and how to take the increment

What are the key requirements of SIST ISO 6670:2026?

SIST ISO 6670:2026 makes the sampler, the sampling conditions, the equipment, and the sample handling process part of the method. The practical goal is to protect the coffee from contamination, moisture change, and unnecessary breakage while still obtaining a sample that reflects the lot.

Sampling personnel and conditions

Sampling shall be done by experienced samplers, trained samplers, or specialized sampling organizations. Sampling shall take place on apparently sound units and liners, in a sheltered place, with protection against contamination.

The standard also calls for minimal moisture change during sampling, preferably in controlled air conditions. That matters because instant coffee is hygroscopic, so moisture gain can affect quality checks and dry matter-related decisions.

If any package unit or liner is damaged, the sampler shall report it and exclude increments taken from damaged units from the bulk sample. If damaged units are present, the sampler shall check the lot for damage.

Sampling equipment

SIST ISO 6670:2026 requires a scoop that complies with Annex A, plus clean, dry sample containers and packages. These containers need materials that do not change odour, taste, or composition, and they must resist transport hazards and moisture absorption.

Taking increments

The number of package units to sample is agreed in advance between the parties. Units are selected using random numbers, then opened and sampled through the liner seal according to the procedure and Annex A.

The increment is taken with the scoop, and more than one increment per unit may be needed to build a bulk sample. In practice, this means the sampler may need to distribute sampling across the lot instead of relying on a single grab.

Preparing samples

SIST ISO 6670:2026 allows two sample-preparation routes:

• combine increments into a bulk sample, then make a blended bulk sample and laboratory sample
• keep increments separate and pack each one as a laboratory sample

The first route is for a general representative sample. The second route helps a laboratory compare differences between individual units in the lot.

Packing, marking, report, and transport

Samples shall be packed in moisture-proof and oxygen-proof containers with airtight closures. The container or label shall show the sampling date, product type, sampler identification, shipping or contract reference, transport vehicle, location, lot details, sampled unit count, and sample mass.

The sampling report shall record the method, damaged units, the condition of the lot, and nearby conditions that could contaminate or affect moisture absorption. Laboratory samples should be sent for examination as soon as possible, and the report should travel with them.

What terms does SIST ISO 6670:2026 define?

SIST ISO 6670:2026 defines several core sampling terms used throughout the procedure.

• Consignment - the quantity of instant coffee dispatched or received at one time under one contract or shipping document.
• Lot - a homogeneous quantity produced in the same cycle and identified by a specific code.
• Sample - the part selected from a lot to estimate the lot's properties by examination.
• Increment - a portion of instant coffee taken from a single unit of a lot.
• Bulk sample - the combined collection of increments taken from the lot.
• Blended bulk sample - the bulk sample after the increments have been combined and mixed.
• Laboratory sample - a portion taken from the blended bulk sample for examination without changing its composition.

Who uses SIST ISO 6670:2026?

SIST ISO 6670:2026 is used by coffee manufacturers, exporters, importers, buyers, sellers, laboratories, inspectors, and specialized sampling organizations. It supports quality control, product verification, contract checking, technical evaluation, and dispute handling for instant coffee in bulk units with liners.

It is especially relevant where the sample may later serve as evidence in commercial or legal questions.

What changed in SIST ISO 6670:2026 from the previous edition?

SIST ISO 6670:2026 replaces SIST ISO 6670:2003 and adopts ISO 6670:2025 as a third edition.

The foreword states these changes:

• the terms and definitions were updated
• the marking content was updated
• the procedure in Annex A was updated

Which standards are used with SIST ISO 6670:2026?

SIST ISO 6670:2026 cites ISO 3509, Coffee and coffee products - Vocabulary. ISO 3509 supplies the vocabulary used for instant coffee and the product types named in the scope, including the types relevant to bulk density and particle size.

What does the SIST ISO 6670:2026 document contain?

SIST ISO 6670:2026 contains a complete sampling workflow for lined bulk units of instant coffee. It covers how to select units at random, take increments, combine or keep them separate, and prepare laboratory samples for examination.

It also contains the packing and marking rules, the sampling report content, and storage and transport precautions. Annex A gives the scoop sampling method, including the scoop, how to open the unit, and how to collect a representative increment.

SLOVENSKI STANDARD
01-november-2026
Nadomešča:
SIST ISO 6670:2003
Instant kava - Metoda vzorčenja za pakiranja v razsutem stanju z notranjo prevleko
(ISO 6670:2025)
Instant coffee — Sampling method for bulk units with liners (ISO 6670:2025)
Café soluble — Méthode d'échantillonnage pour emballages en vrac avec doublure (ISO
6670:2025)
Ta slovenski standard je istoveten z: ISO 6670:2025
ICS:
67.140.20 Kava in kavni nadomestki Coffee and coffee substitutes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

International
Standard
ISO 6670
Third edition
Instant coffee — Sampling method
2025-12
for bulk units with liners
Café soluble — Méthode d'échantillonnage pour emballages en
vrac avec doublure
Reference number
© ISO 2025
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 2
4.1 Sampling personnel .2
4.2 Sampling conditions .2
5 Sampling equipment . 3
6 Procedure . 3
6.1 Taking increments .3
6.2 Preparation of samples .3
6.2.1 General .3
6.2.2 Bulk sample .3
6.2.3 Blended bulk sample .3
6.2.4 Laboratory sample .4
6.2.5 Separate increments .4
7 Packing and marking of samples . 4
7.1 Precautions when packing samples .4
7.2 Marking .4
8 Sampling report . 4
9 Precautions during storage and transport of samples . 5
Annex A (normative) Scoop sampling method . 6

iii
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.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO’s adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 34, Food products, Subcommittee SC 15, Coffee.
This third edition cancels and replaces the second edition (ISO 6670:2002), which has been technically
revised.
The main changes are as follows:
— the terms and definitions have been updated;
— the marking content has been updated;
— the procedure of Annex A has been updated.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.

iv
International Standard ISO 6670:2025(en)
Instant coffee — Sampling method for bulk units with liners
1 Scope
1.1 This document specifies a sampling method for a consignment of instant coffee, shipped in 10 package
units or more.
This document is applicable to cases which have inner linings of moisture-resistant material hermetically
sealed because of the hygroscopic nature of instant coffee and which are in package units greater than 10 kg
net mass, typically up to 50 kg. This document is also applicable to units of more than 50 kg, usually called
“big bags” or “supersacks”. The cases are generally made of ca
...

International
Standard
ISO 6670
Third edition
Instant coffee — Sampling method
2025-12
for bulk units with liners
Café soluble — Méthode d'échantillonnage pour emballages en
vrac avec doublure
Reference number
© ISO 2025
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 2
4.1 Sampling personnel .2
4.2 Sampling conditions .2
5 Sampling equipment . 3
6 Procedure . 3
6.1 Taking increments .3
6.2 Preparation of samples .3
6.2.1 General .3
6.2.2 Bulk sample .3
6.2.3 Blended bulk sample .3
6.2.4 Laboratory sample .4
6.2.5 Separate increments .4
7 Packing and marking of samples . 4
7.1 Precautions when packing samples .4
7.2 Marking .4
8 Sampling report . 4
9 Precautions during storage and transport of samples . 5
Annex A (normative) Scoop sampling method . 6

iii
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.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO’s adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 34, Food products, Subcommittee SC 15, Coffee.
This third edition cancels and replaces the second edition (ISO 6670:2002), which has been technically
revised.
The main changes are as follows:
— the terms and definitions have been updated;
— the marking content has been updated;
— the procedure of Annex A has been updated.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.

iv
International Standard ISO 6670:2025(en)
Instant coffee — Sampling method for bulk units with liners
1 Scope
1.1 This document specifies a sampling method for a consignment of instant coffee, shipped in 10 package
units or more.
This document is applicable to cases which have inner linings of moisture-resistant material hermetically
sealed because of the hygroscopic nature of instant coffee and which are in package units greater than 10 kg
net mass, typically up to 50 kg. This document is also applicable to units of more than 50 kg, usually called
“big bags” or “supersacks”. The cases are generally made of cardboard of appropriate strength and the big
bags are made of suitable plastic material.
1.2 This document is also applicable to the selection and preparation of a sufficiently representative
sample of the consignment, which is intended:
a) to serve as a basis for an offer for sale;
b) for examination to verify that the instant coffee to be offered for sale satisfies the producer’s sales
specification;
c) for examination to determine one
...