Can the older or obsolete free ammonia procedure be used with current spectrophotometers and colorimeters?

Document ID

Document ID TE858

Version

Version 2.0

Status

Status Published

Published Date

Published Date 27/05/2017
Question
Can the older or obsolete free ammonia procedure be used with current spectrophotometers and colorimeters?
Summary
Using obsolete or older free ammonia procedure with spectrophotometers and colorimeters
Answer
Yes, after updating the software, the obsolete program 488 will still be available on the multi-parameter colorimeter and spectrophotometers.
Be advised that the reagents for program 488 were discontinued in early 2015 and only had a 1-year shelf life. At this time, all reagents Hach manufactures that were compatible with program 488 have expired, and program 488 is no longer recommended for use.
Method 10200 which uses program 489 has been updated for the newer Free Ammonia Reagent Set, 50 tests (Catalog Number/Order Code 2879200).