I need to make (or buy) No3 and PO4 reference fluid. My nutrients got away from me. I trusted my Mastertronic too much. It’s WAY the F off right now. It was much much closer on my last ICP, near spot on. It’s my fault, I trusted but didn’t verify. My Hanna is really close to my ICP. In reading and watching videos I see that I can create a baseline calibration against a known reference solution. I couldn’t follow their instructions plus the link to purchase something wasn’t even in English.
I need to create No3 and PO4 reference solution that is within range of .5 to 2.0. Can this be purchased? Or, how can I make a liter of each? If I make a liter will it stay stable over time? Any help would be greatly appreciated. If someone made it, I’d even buy it from you, lol.
I need to create No3 and PO4 reference solution that is within range of .5 to 2.0. Can this be purchased? Or, how can I make a liter of each? If I make a liter will it stay stable over time? Any help would be greatly appreciated. If someone made it, I’d even buy it from you, lol.

