2004 Salifert CA test results VS. 2013 Nutrafin CA test results

[Reef.ductionist]

I recenly pulled a 2004 Salifert test kit out of storage(pictured below) and instead of throwing it away purchased a test kit from another manufacturer and compared the results.
Salifert measured my aquariums calcium at 320 whereas Nutrafin measured calcium at 300.
Your opinions would be appreciated.

 

[Curtis Scott]

I would purchase a new Salifert Calcium test because they are pretty accurate and reliable. It wouldn't surprise me to see a new test with very close results to the old Salifert test.

 

[Reef.ductionist]

Interesting. Yeah thinkIll try that in afew days. Honestly I'm a little surprised it read close. I sgree with you the new Salifert testkit would be a better
bench-test.