BS 2782-5:Method 531A:1992
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Methods of testing plastics. Optical and colour properties, weathering Determination of refractive index of transparent plastics
Hardcopy , PDF
15-10-1999
English
01-04-1992
Important note : Users cannot be edited or removed once added to your Multi user PDF.NO CONTENTS SECTION
Gives two methods for determining the refractive index of transparent plastics, namely the refractometric method for measuring the refractive index of transparent cast, moulded or sheet materials by means of a refractometer. Recommended when great accuracy is required. Secondly, the immersion method for determining the refractive index of powdered or granulated transparent materials by means of a microscope and making use of the Becke line phenomenon. Monochromatic light should be used to avoid dispersion effects. The accuracy of this method is about the same as that of method A.
| Committee |
PRI/21
|
| DocumentType |
Standard
|
| Pages |
8
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| Standards | Relationship |
| ISO 489:1999 | Identical |
| BS 4936:1987 | Method of specifying styrene-acrylonitrile (SAN) moulding and extrusion materials |
| BS 1493:1987 | Method of specifying general purpose polystyrene (PS) moulding and extrusion materials |
| BS 7825-3.5:1997 | Calibration of rubber and plastics test equipment. Calibration schedules Optical and weathering properties |
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.