Rickyrooz

Acropora Nut
Location
Newtown, PA
Rating - 100%
2   0   0
I purchased a new set of Salifert test kits from Drs. Foster and Smith last week to test against my Hanna Checker's because I felt there were off based on the color of my corals. This morning the Salifert alkalinity tested at 8.3 (expiration date 9/2018) and the Salifert calcium tested at 405 (expiration date 12/2018). The Hanna Checker for alkalinity tested at 7.62 (expiration date 8/2014) and the calcium registered at 489 (expiration date 11/2014). Which test kit should I believe is giving me the correct results?
 

Dan_P

Advanced Reefer
Location
Connecticut
Rating - 0%
0   0   0
Your Salifert alkalinity kit comes with an alkalinity reference standard. Test that with both kits and compare the results. Using half drops and paying close attention to the indicator color change, I am able to get within 10ppm of the reference standard value. Of course, I am assuming the reference standard is good.
 

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