To use the Standards New Zealand Online Library :
You will need to sign in with your Open Polytechnic username and password.
Enter a standard's code in the Online Library subscription search box, e.g. NZS 4431:1989 or 4431:1989
Note, if you don't find it, try using just the number, e.g. 4431
Click on View PDF to see the standard - you might need to scroll down.
(Note, clicking on the standard's title will take you to a payment page.)
For more information see:
Video guide to downloading Standards [3.03 mins]