Magnetic Speedstir Question

[Aleila]

When you perform the Calcium Hardness Test, do you swirl as you drop when adding R-0012 one drop at a time of until the color changes to blue?

I am asking because the color changes more quickly when I stir as I drop and I want to make sure I am getting an accurate test result.

The Calcium Hardness Test is the only TF100 Test that doesn’t mention “swirling as you drop,” on the direction card but I wanted to check here with the experts.

Thanks

 

[mknauss]

You swirl. It is the one test that the Speedstir dramatically increases your accuracy on.

 

[Aleila]

Thanks Marty.

 

[Richard320]

When you perform the Calcium Hardness Test, do you swirl as you drop when adding R-0012 one drop at a time of until the color changes to blue?

Yes, because I use a speedstir so it's swirling constantly. My CH readings dropped 200 ppm just by switching to the speedstir. Also, when it seems stalled at maroon, another cycle will usually push it back to pink or ahead to blue. No way would I have the patience or the wrist endurance to do another 100 swirls. I'd just give it another drop.

 

[Aleila]

Yes, because I use a speedstir so it's swirling constantly. My CH readings dropped 200 ppm just by switching to the speedstir. Also, when it seems stalled at maroon, another cycle will usually push it back to pink or ahead to blue. No way would I have the patience or the wrist endurance to do another 100 swirls. I'd just give it another drop.

Thanks Richard, I don’t think I’ll ever stop learning new information on this site. I also see why the speedstir is so highly recommended.