Customer Support: +44 (0)203 327 3140

Login to i2i Subscription Intertek.com
  • There are no items in your cart
We noticed you’re not on the correct regional site. Switch to our AMERICAS site for the best experience.
Go to AMERICAS site
Dismiss alert
Please enter a keyword to search
Advanced search
Home
BSI
BS EN ISO 787-4:2017

BS EN ISO 787-4:2017

Current

Current

The latest, up-to-date edition.

General methods of test for pigments and extenders Determination of acidity or alkalinity of the aqueous extract

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

09-11-2018

Publisher

British Standards Institution

This part of ISO 787 specifies a general method of test for determining the acidity or alkalinity of the aqueous extract of a sample of pigment or extender.

The principle of the method consists in the hot extraction of the material by following the procedure specified in ISO 787/3, to the stage of obtaining a perfectly clear filtrate. The determination is carried out with indicator solution (method A). If the solution with the methyl red indicator is yellow (alkaline), titrate it with the hydrochloric acid solution to an orange end-point; if the solution with the methyl red indicator is red (acid), titrate it with the sodium or potassium hydroxide solution to an orange end-point. The other method (method B) is the potentiometric determination. Take 100 ml of the test solution, insert the electrodes of the pH measuring device and read the pH value.

Committee
W/-
DocumentType
Standard
ISBN
9780580968297
Pages
12
ProductNote
This standards also refers to ISO/TR 385,ISO/R 385,ISO 787
PublisherName
British Standards Institution
Status
Current

Standards Relationship
ISO 787-4:1981 Identical
EN ISO 787-2 : 1995 Identical
EN ISO 787-4:2017 Identical

View more information
£112.00
Excluding VAT
GBP
CAD
CHF
CNY
DKK
EUR
GBP
HKD
IDR
INR
JPY
KRW
MXN
NOK
NZD
SEK
SGD
USD
ZAR
Hardcopy - English
PDF - English
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50

Access your standards online with a subscription

Features

  • Simple online access to standards, technical information and regulations.

  • Critical updates of standards and customisable alerts and notifications.

  • Multi-user online standards collection: secure, flexible and cost effective.

Learn more on subscription solutions

or

Get in touch with us