SIST EN ISO 3593:1998

SLOVENSKI STANDARD
01-november-1998
âNURE'RORþHYDQMHSHSHOD,62
Starch - Determination of ash (ISO 3593:1981)
Stärke - Bestimmung der Asche (ISO 3593:1981)
Amidons et fécules - Détermination des cendres (ISO 3593:1981)
Ta slovenski standard je istoveten z: EN ISO 3593:1994
ICS:
67.180.20 Škrob in izdelki iz njega Starch and derived products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

International Standard 3593
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION.MEIKAYHAPOAHAR OPf-AHM3AWlR l-l0 CTAH~APTM3ALWl@ORGANISATION INTERNATIONALE DE NORMALISATION
Starch - Determination of ash
Amidons et fhcules - Dhtermina tion des cendres
Second edition - 1981-10-01
UDC 664.2 : 543.822
Ref. No. ISO35934981 (EI
Descriptors : starch, determination of ash.
Price based on 2 pages
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of
national Standards institutes (ISO member bodies). The work of developing Inter-
national Standards is carried out through ISO technical committees. Every member
body interested in a subject for which a technical committee has been set up 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.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the ISO Council.
International Standard ISO 3593 was developed by Technical Committee ISO/TC 93,
Starch (including derivatives and b y-produc ts).
This second edition was submitted directly to the ISO Council, in accordance with
clause 5.10.1 of part 1 of the Directives for the technical work of ISO. lt cancels and
replaces the first edition (i.e. ISO 3593-1976), which had been approved by the
member bodies of the following countries :
Chile Netherlands United Kingdom
Czec hoslova kia Poland USSR
Y ugoslavia
France Romania
Spain
Germany, F. R.
Iran Turkey
The member bodies of the following countries had expressed disapproval of the docu-
ment on technical grounds :
Australia
USA
0 International Organkation for Standardkation, 1981
Printed in Switzerland
ISO 3593-1981 (E)
INTERNATIONAL STANDARD
Determination of ash
Starch -
0 Introduction 5 Apparatus
Native starches contain naturally small amounts of mineral Ordinary laboratory apparatus, and in particular :
substances. Converted starches may additionally contain
variable amounts of added mineral substances.
5.1 Ashing dishes, of platinum or of any other material
unaffected under the test conditions, with a flat base, a capac-
This International Standard specifies a procedure for the con-
ity of about 40 ml and a minimum usable surface area of
ventional evaluation of both of these amounts together.
15 cm*.
5.2 Desiccator, provided with a thick perforated rnetal
1 Scope and field of application
plate, and containing an efficient desiccant such as
phosphorus(V) Oxide, silica gel impregnated with Cobalt
This International Standard specifies a method for the deter-
chloride indicator, or granular anhydrous Calcium sulphate
mination of the ash yielded by starches.
similarly treated.
The method is applicable to native starches and to modified
starches yielding not more than 2 % of ash. lt does not apply to
5.3 Electric furnace with Ventilation, including a device
hydrolysis products nor to oxidized starches, nor to other
for control and adjustment of temperature to provide for in-
products containing more than 0,2 % of chlorid
...