Help reading ammonia readings

[bigdaddyadam]

I can pinpoint Calcium on mine to within 10ppm easily

 

[Spuds725]

<a href=showthread.php?s=&postid=6836025#post6836025 target=_blank>Originally posted</a> by Dubbin1
Dave just so you know what we are talking about when we recommend the salifert test kits, they give you an actual number instead of trying to match up a color.

My Salifert Nitrate matches a color

Just to clarify...

Salifert Calcium and Alkalinity use what is called a titration

... you add the indicator to your sample, add the titrant dropwise until there is a color change... the syringe is finely graduated so its pretty accurate... the only thing I don't care for is the swirling... I was a chemistry major in College and worked as a lab tech for a while--- I was spoiled doing titrations by having a magnetic stirrer in the bottom of my container.... usally used a larger sample so it was alot more accurate and easier to see the endpoint (where the color changes)--- I could knock out a chloride titration in about 20 seconds...

 

[bigdaddyadam]

oh yeah, I used to work as a lab tech in a construction materials testing lab, doing titrations with the equipment they had was a sinch but I am sure that stuff costs a lot of green.

 

[skippysmind]

Oh yeah, I used to be in charge of a lab and the whole damn facility at a plastic processing plant