oSIST prEN 196-7:2026

• Abstract:

  This document specifies the equipment to be used, the procedures to be applied and the requirements for sampling common cement and/or its constituent materials, representative of defined lots, for testing purposes.; The same equipment and procedures can be used for other types of cement or materials; in some cases, modifications to the procedure are also permitted, provided that this document and/or the modifications are referenced in the relevant product standards.; The provisions of this document are only applicable when samples of constituent of common cement are:; a) required for evaluating the conformity of common cement or constituent of cement at the characteristics related to common cement, to cement constituents, to the release of dangerous substances to soil and ground water of common cement, and to environmental sustainability of common cement; or; b) requested for checking a delivery or a lot with a standard, the provisions of a contract or the specification in an order.; This document is applicable to the sampling of powders or bulk materials, whether they are:; c) contained in silos;; d) contained in bags, canisters, drums or any other packages;; e) transported in bulk in road vehicles, railway wagons, ships, etc.; NOTE The requirements of this document can also, by agreement between the parties, be followed for acceptance inspections for all non-standardized hydraulic binders.

• Status: Not Published
• Public Enquiry End Date: 22-Oct-2026
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: CAA - Mineral binders and masonry
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 06-Aug-2026
• Due Date: 24-Dec-2026
• Ref Project: prEN 196-7 - Methods of testing cement - Part 7: Methods for sampling and sample preparation of common cement and its constituents

• Revises: SIST EN 196-7:2008 - Methods of testing cement - Part 7: Methods of taking and preparing samples of cement
• Effective Date: 25-Mar-2026

oSIST prEN 196-7:2026 is the Slovenian adoption of the draft European standard prEN 196-7, published by SIST. It specifies how to sample common cement and its constituent materials, and how to prepare those samples for testing. The document is meant for manufacturers, suppliers, customers, laboratories, and certification bodies that need representative samples from defined lots or deliveries.

What does oSIST prEN 196-7:2026 specify?

oSIST prEN 196-7:2026 covers the equipment, procedures, and requirements for taking representative samples of common cement and its constituents for testing. It is organised as a practical method document: it starts with scope and terms, then gives general rules, detailed sampling methods, sample quantity, sample preparation, packaging and storage, and the sampling report.

Annex	What it covers
Annex A	Typical examples of equipment normally used for sampling and sample preparation
Annex B	Measurement of sampling variation

The scope also allows the same equipment and procedures to be used for other cements or materials when the relevant product standard refers to this document or its modifications. It applies when sampling is needed for conformity assessment, delivery checks against standards or contracts, and related checks on dangerous substances and environmental sustainability.

What are the key requirements of oSIST prEN 196-7:2026?

Representative sampling conditions

Clause 4 says sampling must produce portions that represent the whole lot or batch. In practice, that means the sample has to support a sound decision on conformity without testing every item, so the way the sample is taken matters as much as the test itself.

Clause 4.3 says delivery sampling should normally be done in the presence of both parties, and sampling is normally before or during discharge or unloading. If sampling happens after discharge, it should be done no later than 24 h later and the result should be interpreted cautiously. For buyers and suppliers, this means the sampling time and the presence of witnesses need to be planned and recorded.

Equipment and sampling points

Clause 4.4 requires sampling equipment to be approved by the relevant parties, made of non-corrodible material, and kept clean and in working order. Annex A gives examples such as sampling tubes, ladles, screw samplers, frames, boxes, spears, probes, riffle boxes, and rotary sample dividers. In practice, the equipment must fit the product and the installation, while avoiding contamination or reaction with the cement.

Clause 5 gives the sampling methods for common situations: bags and small containers, stationary conveyor belts, belts and chute discharge points, pneumatically conveyed material, bucket elevators, silos, stockpiles, and railway wagons, trucks, and ships. Manual sampling from moving material is to be avoided, and stockpile sampling should be avoided when possible because segregation can bias the result. This matters because the sampling point can change the result even when the product is the same.

Sample type, size, and number of increments

Clause 6 says the frequency of sampling and the choice between spot samples and composite samples depend on agreement between the parties or on a national or European standard. Clause 7 says the sample has to be large enough for the intended tests to be carried out twice, including any sample for retest or retained sample. For powder samples, the document notes that laboratory samples of at least 5 kg are generally sufficient, but more may be needed to fill the chosen container.

For coarse samples, the quantity depends on the tests, particle size, and bulk density. Annex B gives a procedure for checking whether the number of increments taken is adequate, so producers can justify or adjust their sampling plan using measured sampling variation.

Sample preparation, homogenization, and reduction

Clause 8 requires careful homogenization as soon as the sample has been taken, preferably in a laboratory and with clean, dry tools. Where available, a mixing machine is preferred; otherwise, quartering or riffle splitting can be used. A rotary sample divider is preferred where available. The practical point is that sampling does not end at collection - the way the sample is mixed and reduced can still affect the test result.

Clause 8.4 gives a check for the effectiveness of homogenization using micro-samples and repeated determinations of a chosen characteristic. If the analysis shows significant differences, the mixing step has to be improved. Clause 8.6 says any foreign material found during preparation must be recorded, and removal needs agreement between the parties.

Packaging, identification, and reporting

Clause 9 requires samples to be packed and stored so that their chemical, mineralogical, and physical properties are preserved. Containers must be dry, clean, impervious to air and moisture, inert to the sample, and sealed as far as possible. Samples must be clearly and permanently identified, and they may be authenticated by a seal where the contract requires it.

Clause 10 requires a sampling report for each sample. The report must state who sampled, who the customer is for delivery checks, the product designation, the producing works, place, date, time, sample type, container mark, and relevant comments such as foreign materials or transport conditions. The report must be signed by the parties present or another approved witness and sent without delay.

What terms does oSIST prEN 196-7:2026 define?

• Common cement - A cement type defined by EN 197-1 and used as the main product covered by this sampling method.
• Constituent of common cement - A material defined by EN 197-1 that forms part of common cement or is assessed with it.
• Lot - A production, supply, delivery, or stock quantity treated as uniform for the purpose of acceptance or conformity checking.
• Increment - One quantity taken in a single sampling operation, intended to represent the product at that point in time and place.
• Spot sample - A sample taken over a short period at a fixed point from a larger quantity.
• Composite sample - A homogeneous mixture made from several spot samples taken at different points or times.
• Laboratory sample - A sample prepared from a larger sample for use by the testing laboratory.
• Retained sample - A sample kept for possible later testing if results are disputed or uncertain.

Who uses oSIST prEN 196-7:2026?

This standard is used by cement manufacturers, depots, dispatch centres, suppliers, purchasers, and certification bodies when they need agreed sampling of cement or constituent materials. It is also used by laboratory staff and quality-control personnel who prepare samples for conformity testing, delivery checks, and investigation of disputes.

It is relevant in cement production, distribution, bulk handling, and construction supply chains. The document is particularly useful when material is stored in silos, packed in bags or drums, or transported in road vehicles, railway wagons, or ships.

What changed in oSIST prEN 196-7:2026 from the previous edition?

oSIST prEN 196-7:2026 will supersede EN 196-7:2007.

Which standards are used with oSIST prEN 196-7:2026?

The document refers to these standards for definitions, calculations, methods, or background guidance:

• EN 197-1 - Defines common cement and constituent of common cement.
• EN 197-2 - Covers conformity evaluation of cement.
• EN 1097-3 - Provides the loose bulk density used in the coarse-sample mass estimate.
• EN 196-6 - Provides fineness determination used as an example characteristic in homogenization verification.
• EN 196-18 - Provides whiteness or colour determination used as an optional characteristic in homogenization verification.
• EN 932-1 - Gives a sampling method reference for aggregates, cited alongside quartering practice.
• ISO 5725-6 - Provides the accuracy and precision framework referenced in the sampling-variation annex.

What does the oSIST prEN 196-7:2026 document contain?

The document contains practical procedures for sampling from bags, conveyors, silos, stockpiles, and transport vehicles, plus rules for choosing spot or composite samples. It also includes sample-size guidance, reduction methods such as riffle splitting and quartering, and a method for checking whether a sampling plan is sufficiently repeatable.

Annex A provides illustrated examples of devices used in sampling and sample preparation, including their key dimensions and operating constraints. Annex B provides a statistical procedure for measuring sampling variation and adjusting the number of increments when needed.

For quality control and disputes, the report requirements in Clause 10 are especially important because they create the record linking the sample to the lot, the place and time of sampling, and the conditions under which the sample was taken.

SLOVENSKI STANDARD
01-oktober-2026
Metode preskušanja cementa - 7. del: Metode za vzorčenje in pripravo vzorcev
običajnega cementa in njegovih sestavin
Methods of testing cement - Part 7: Methods for sampling and sample preparation of
common cement and its constituents
Prüfverfahren für Zement - Teil 7: Verfahren für die Probenahme und
Probenvorbereitung von gewöhnlichem Zement und seinen Bestandteilen
Méthodes d'essai des ciments - Partie 7: Méthodes de prélèvement et de préparation
d'échantillons de ciment ordinaire et de ses constituants
Ta slovenski standard je istoveten z: prEN 196-7
ICS:
91.100.10 Cement. Mavec. Apno. Malta Cement. Gypsum. Lime.
Mortar
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2026
ICS 91.100.10 Will supersede EN 196-7:2007
English Version
Methods of testing cement - Part 7: Methods for sampling
and sample preparation of common cement and its
constituents
Méthodes d'essai des ciments - Partie 7: Méthodes de Prüfverfahren für Zement - Teil 7: Verfahren für die
prélèvement et de préparation d'échantillons de Probenahme und Probenvorbereitung von
ciment ordinaire et de ses constituants gewöhnlichem Zement und seinen Bestandteilen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 51.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 196-7:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General. 7
4.1 Scope . 7
4.2 Equipment . 7
4.3 Representation . 7
4.4 Sampling equipment . 8
5 Procedure for taking samples . 8
5.1 General. 8
5.2 Sampling from bags, drums and containers of small size . 9
5.3 Sampling from a Stationary Conveyor Belt . 9
5.4 Sampling from Belts and Chute Discharge Points . 9
5.5 Sampling of Pneumatically Conveyed Material . 9
5.6 Sampling from Bucket Elevators, Shovels, or Buckets . 9
5.7 Sampling from Silos . 10
5.8 Sampling from Stockpiles . 10
5.9 Sampling from Railway Wagons, Trucks, and Ships . 10
6 Frequency at which samples are taken and choice of sample type . 10
7 Quantity of sample to be taken . 10
7.1 Powder Samples . 10
7.2 Coarse Samples . 11
8 Preparation of samples . 11
8.1 General. 11
8.2 Reduction of samples . 11
8.2.1 General. 11
8.2.2 Reduction of a bulk sample using a riffle splitter . 12
8.2.3 Reduction of increments using a riffle splitter . 12
8.2.4 Reduction of a bulk sample by quartering. 12
8.2.5 Reduction of increments by quartering . 13
8.3 Homogenization . 13
8.4 Verification of the efficiency of homogenization . 13
8.5 Division of the homogenized sample . 14
8.6 Foreign materials in the sample . 15
9 Packaging and storage . 15
9.1 Principle . 15
9.2 Containers . 15
9.3 Storage condition . 16
9.4 Identification of samples . 16
9.5 Authentication of samples . 16
10 Sampling report . 16
10.1 General . 16
10.2 Information to be included . 16
10.2.1 Obligatory information. 16
10.2.2 Optional information . 17
10.3 Authorization of the report . 17
10.4 Dispatch of the report . 17
Annex A (informative) Typical examples of equipment normally used for sampling and sample
preparation . 18
Annex B (informative) Measurement of sampling variation . 29
Bibliography . 31

European foreword
This document (prEN 196-7:2026) has been prepared by Technical Committee CEN/TC 51 Cement and
building limes”, the secretariat of which is held by NBN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 196-7:2007.
1 Scope
This document specifies the equipment to be used, the procedures to be applied and the requirements
for sampling common cement and/or its constituent materials, representative of defined lots, for testing
purposes.
The same equipment and procedures can be used for other types of cement or materials; in some cases,
modifications to the procedure are also permitted, provided that this document and/or the modifications
are referenced in the relevant product standards.
The provisions of this document are only applicable when samples of constituent of common cement are:
a) required for evaluating the conformity of common cement or constituent of cement at the
characteristics related to common cement, to cement constituents, to the release of dangerous
substances to soil and ground water of common cement, and to environmental sustainability of
common cement; or
b) requested for checking a delivery or a lot with a standard, the provisions of a contract or the
specification in an order.
This document is applicable to the sampling of powders or bulk materials, whether they are:
c) contained in silos;
d) contained in bags, canisters, drums or any other packages;
e) transported in bulk in road vehicles, railway wagons, ships, etc.
NOTE The requirements of this document can also, by agreement between the parties, be followed for
acceptance inspections for all non-standardized hydraulic binders.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
3.1
constituent of common cement
As defined in EN 197-1.
3.2
common cement
As defined in EN 197-1.
3.3
order
formal request, covered by a single requisition placed with one manufacturer, factory, depot, or
dispatching centre, issued by a customer or authorized party for the supply or procurement of a product
in accordance with specified requirements, quantities, timeframes, and conditions
Note 1 to entry: The order can comprise of one or more consignments delivered over a defined period of time.
3.4
consignment
quantity of a product dispatched or received at one time, generally covered by a single dispatch note or
transport document, originating from a single manufacturer, factory, depot, or dispatching centre, and
presumed to have been manufactured under uniform conditions
3.5
lot
quantity of production, quantity of supply, or partial quantity of delivery (railway wagon load, truck load,
ship load) or stock of product produced at one time under conditions considered to be uniform
Note 1 to entry: In a continuous process, the quantity produced during an agreed period of time is regarded as a
lot.
Note 2 to entry: After specified tests this quantity is regarded as a whole as meeting or not meeting a standard, the
provisions of a contract or the specification in an order.
3.6
increment
quantity taken in a single operation using the sampling equipment used
Note 1 to entry: Each increment represents a part of the total sample collected for a specific lot or consignment and
is intended to be representative of the product in the location and time of sampling.
3.7
sample
quantity taken at random, or in accordance with a sampling plan, from a larger quantity (e.g. silo, stock
of bags, wagons, trucks, ships, etc.) or from a defined lot, for the purpose of the intended tests
Note 1 to entry: A sample can consist of one or more increments, each intended to be representative of the portion
of product from which it was taken.
3.8
spot sample
taken within a short period of time and at a fixed point from a larger quantity, for the purpose of the
intended tests
Note 1 to entry: A spot sample can be obtained by combining one or more immediately consecutive increments,
each intended to be representative of the portion of product from which it was taken.
3.9
composite sample
homogeneous mixture of spot samples taken:
a) at different points; or
b) at different times.
from a larger mass of the same material
Note 1 to entry: The composite sample is obtained by thoroughly mixing the combined spot samples and, if
necessary, reducing the size of the resulting mixture, in order to produce a representative sample for testing.
3.10
laboratory sample
prepared by thoroughly mixing, and if necessary, reducing, a larger sample (spot or composite sample),
intended for use by laboratories performing the tests.
3.11
sample for retest
retained for possible subsequent testing in the event that the results obtained from laboratory samples
are in doubt or disputed
3.12
retained sample
taken systematically from regular deliveries (for example, for large construction works), if necessary, in
the presence of all concerned parties, to be retained for possible testing in the event of doubt, dispute, or
subsequent problems.
Note 1 to entry: Definitions 3.3, 3.4, 3.5, and 3.12 are applicable only in the case of checks performed at the time of
delivery of a supply.
4 General
4.1 Scope
Sampling is the process of selecting and preparing one or more portions from a lot or batch under
specified conditions, so that they are representative of the entire lot. These portions are then used for
measurement, inspection, or analysis to provide information about the lot from which they were taken.
The purpose of sampling is to:
• obtain a representative specimen or specimens of a lot or batch so that subsequent inspection or
measurement results can be reliably related to the whole lot;
• facilitate decisions about conformity, quality level, acceptability or rejection of the lot without
inspecting every item.
• support efficient quality-control, acceptance inspection, process monitoring or conformity
assessment by reducing labour/time/resources compared to 100 % inspection.
• enable compliance with defined standards, contractual or regulatory requirements, while
controlling risks of wrong decision (e.g. producer’s risk, consumer’s risk).
4.2 Equipment
The equipment used, methods followed, and precautions taken can vary according to the nature of the
installation and the circumstances in which the samples are taken.
4.3 Representation
When taking delivery of a supply, sampling should be conducted in the presence of representatives of
both the manufacturer (or vendor) and the customer (or purchaser). The absence of one party shall not
prevent sampling; however, such absence can be recorded in the sampling report (see Clause 10).
Samples are normally taken before or during discharge or unloading. If necessary, sampling can be
performed after discharge or unloading, but no later than 24 h. In this case, the results of the tests shall
be interpreted with caution.
Note: For various reasons, the sample can no longer be fully representative of the product at the time of
discharge or unloading if there is a delay in sampling.
In all cases, the time of sampling shall be recorded in the sampling report (see Clause 10). When samples
are taken after discharge or unloading, the recommendations in the first paragraph above remain
applicable.
4.4 Sampling equipment
Industrial installations and sampling conditions vary widely. Therefore, it is not possible to specify a
single reference type of equipment. This document provides, by way of example in Annex A, simplified
illustrations of commonly used and satisfactory devices. Sampling equipment can be portable (e.g. ladle,
tube, screw sampler) or permanently installed (e.g. screw extractor or other equipment fixed to the
container).
Equipment shall be selected and used in accordance with the following requirements:
a) Approved by all relevant parties (e.g. certification bodies, manufacturer, supplier, customer, etc).
b) Made of non-corrodible material, not liable to react with the sample.
c) Maintained in working order and in a clean condition. Equipment can be thoroughly cleaned after
each sampling operation and protected from contamination, including lubricants from other
equipment.
NOTE Cleaning is not required between successive increments taken from the same cement intended for
forming a single sample.
5 Procedure for taking samples
5.1 General
The most suitable equipment for the circumstances shall be used to take a sample.
Safety and ergonomic regulations shall be followed at all times.
Sampling operations inevitably require personnel to work close to processing equipment and moving
vehicles. All operations shall be carried out in close coordination with operations management to ensure
workplace safety.
Materials in lump form normally have a size of less than 10 cm. When larger pieces are present, they shall
be crushed before sampling.
Materials in lump form should preferably be sampled from a stationary conveyor belt or from the
stationary flow of material. Samples should be taken at regular intervals throughout the handling of the
lot.
When sampling from a stockpile, it is difficult to maintain the principle of random sampling across the
entire lot because segregation can lead to biased results. Therefore, this method should be avoided
whenever possible.
Manual sampling using shovels or similar tools shall not be performed on moving material.
5.2 Sampling from bags, drums and containers of small size
When materials are packed in bags, drums, or other small containers, the composite sample shall be
formed by selecting a number of spot sample at random.
Each selected package can be taken as a whole or a sampling probe, in the case of large size of package,
(see A.2) can be used to obtain a spot sample from each selected package. Alternatively, each selected
package can be reduced using one of the procedures described in Clause 8.
NOTE Where possible, packages can be selected at random, either by choosing them at random intervals as
they pass a predetermined sampling point during loading or unloading, or by numbering all packages and using
random numbers.
5.3 Sampling from a Stationary Conveyor Belt
Sampling should begin only after a preliminary start-up to ensure that any irregularities in the belt
movement do not result in a biased sample.
All increments shall be taken at the same sampling point, and the material shall be collected across the
full cross-section of the conveyor belt at each increment.
The sampling tool (see A.6) should be used to separate the material to be taken as an increment at the
sampling point. Alternatively, a shovel or a flat metal plate can be used to isolate the increment from the
material remaining on the belt at both ends. Each increment shall have a length approximately three
times the width of the material stream on the belt, or a minimum mass calculated in accordance with
Clause 7.
5.4 Sampling from Belts and Chute Discharge Points
Sampling should begin only after a preliminary start-up to ensure that any irregularities in the flow do
not result in a biased sample.
A mechanical device represents the most practical means for taking samples from a conveyor belt or from
chute discharge points.
Manual sampling should be avoided whenever possible due to both safety risks and potential sampling
errors.
The period during which sampling is carried out shall be divided into an equal number of intervals, and
one increment shall be taken midway through each interval.
The increment shall be taken by passing the sampling container or sampling box (see A.7) uniformly
through the discharge stream, ensuring that the entire cross-section of the material flow is intercepted.
Samples can also be taken at the discharge of a screen using the same method.
5.5 Sampling of Pneumatically Conveyed Material
Sampling from pneumatic conveying systems shall be carried out in accordance with 8.3, using sampling
equipment installed by the manufacturer.
Such equipment, generally based on a diversion principle, shall be designed so that the entire material
flow can be diverted through the sampling line when required.
5.6 Sampling from Bucket Elevators, Shovels, or Buckets
Each increment shall consist of the entire contents of one bucket or one shovel load.
If the increment obtained is too large, it shall be reduced using one of the methods described in Clause 8,
or it can be discharged to form a small pile from which a sample shall be taken in accordance with 5.8.
5.7 Sampling from Silos
Sampling shall be performed at an extraction point in accordance with 5.4.
The silo shall be opened sufficiently to allow a uniform material flow without segregation.
5.8 Sampling from Stockpiles
Samples of approximately equal size shall be taken from various points and at different heights or depths
throughout the stockpile (see Figure 1) [3].
The location and number of increments shall take into account the method of stockpile formation, its
shape, and the likelihood of segregation within the pile.
Sampling shall be performed using a scoop (see A.5), shovel (see A.5), or probe (see A.9), collecting the
material from the deepest point of each hole.

Figure 1 — Sampling from flat stockpiles
5.9 Sampling from Railway Wagons, Trucks, and Ships
For all equipment used, care shall be taken material from the top or bottom layers of the mass of sample.
The thickness of the layer to be considered is at least 15 cm.
Sampling of nearly uniform or fine materials that flow freely from trucks can be carried out as described
in 5.8.
Sampling of fine materials from trucks can also be perform
...