Ph calibration fluid
- Thread starter dad1st
- Start date
Think you meant 7 and 10... not 4 and 10.
As far as the packets of solution - even though the big bottles are cheaper per unit of fluid, the packets really make calibration easy. There's just the right amount of fluid in the packet to be able to fully immerse and swish around the probe, right in the packet itself. No need to waste fluid filling up a container to get it at the right level. Also, since you're using the packet itself to calibrate in, you don't have to worry about cleanliness of whatever you pour the solution in to - there's no chance of cross contamination effecting the calibration solution.
Just my nickel's worth.
As far as the packets of solution - even though the big bottles are cheaper per unit of fluid, the packets really make calibration easy. There's just the right amount of fluid in the packet to be able to fully immerse and swish around the probe, right in the packet itself. No need to waste fluid filling up a container to get it at the right level. Also, since you're using the packet itself to calibrate in, you don't have to worry about cleanliness of whatever you pour the solution in to - there's no chance of cross contamination effecting the calibration solution.
Just my nickel's worth.
Yes, I did. Good catch.
No, you calibrate with either 7 and 10, or 4 and 7. BTW, 4 and 7 is for fresh water tank.
Using 4 & 7 is also appropriate if the probe will be used with a calcium reactor, since the effluent is typically around pH 6.5.
Reef_Matrix29
Water Lover
If you have big bottles and aren't worried about reusing the solution, pour the contents into a small sauce container, like a ramekin from any restaurant as your semi shallow reservoir. I get my solutions in bulk as well and small containers like this work perfectly. You could also use an old plastic spice container from McCormick, just use or dump the contents out, wash it thoroughly and then pour 30 mls in there...cut a small opening in the top and insert your probe if you don't want to hold it while it settles. Easy!
Thanks for the reply. I was just wondering if you could calibrate it at multiple points to improve accuracy but I guess there is little need for it, or even the capacity in the hardware to do so at more than two points.
As to using the big bottles of calibration fluid I just use those tiny plastic solo cups you get for the bathroom and toss them out after each use. You can use as little as 20ml in them and get a decent enough depth to cover the business end of the probe completely. I don't see a problem with using them but I might be wrong.
