This standard was last reviewed and confirmed in 2021. Therefore this version remains current.
Cancels and replaces the first edition (1976). Establishes criteria for the purity of photographic-grade anhydrous potassium carbonate and specifies the tests to be used to determine the purity.
Buy this standard
|std 1 40|
|std 2 40||Paper|
A standard is reviewed every 5 years
Stage: 90.93 (Confirmed)
Got a question?
Check out our FAQs
+41 22 749 08 88
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)
Keep up to date with ISO
Sign up to our newsletter for the latest news, views and product information.