New salifert calcium test

[monkeyCmonkeyDo]

New procedure. It goes from blue to pink to back to blue? Lol. Am i correct?
My old 3 step test kit is still good but i threw away the instructions today cleaning. Lol.
D

 

[ReefRusty]

Yes 2ml tank water, 1 level scoop of ca1 then swirl for 5 seconds then measure 1ml on syringe bottom of the black on 1ml line, empty down to 0.4ml then swirl. 1 or 2 drops until back to blue

 

[taricha]

I still require more explanation

 

[taricha]

I think I get it now. It's red only if you are near the correct endpoint. If you overshoot, it goes back to blue to tell you that you added too much titrant.

 

[Snoopy 67]

NO---- if it reverts back to red you have to add more from the syringe. It apparently can change back for a few seconds.
The correct reading remains blue.

 

[monkeyCmonkeyDo]

I had to watch a youtube video prior to this post but basically you.
Add.
2ml water
Scoop of purple stuff.
Fill syringe with red cap bottle to the 1.0 at the very tippy top.
Leave the air gap. Its in the pink tip.
Add to ur test vial down to 0.4.
Swirl for 5 seconds.
Now continuiously add drops till it turns back to blue. Lol!
It goes blue. Pink. Back to blue. When the final.color change has occured and your back to blue. You have ur results.
This is my understanding. Ive only done once. Last night.
D

 

[NashobaTek]

Dang, API CA test is the same color change. Just 2 bottles of drops

 

[blasterman]

Is this a new formula by salifert?

Most people read the color change too early. It needs to completely change to blue to be read.

 

[monkeyCmonkeyDo]

Yes this is new.
D

 

[piranhaman00]

Lots of people doing this wrong evidently or describing the steps wrong

1. 2mLs tank water into vial
2. I scoop of powder. Water will turn BLUE not PINK like usual)
3. Draw up 1mL of solution like normal.
4. Put 0.6mL into the 2mL of tank water to turn the solution PINK (Should only have 0.4mL left, this is why it is highlighted out in directions, your solution must be over this to be read properly).
5. Now continue titrating until it turns back to BLUE.
6. That is your final reading.

 

[monkeyCmonkeyDo]

Is that how mine sounds pirahna?

 

[monkeyCmonkeyDo]

Cuz that is correct. Idk when they did this update... i just had to use the new method last night cuz i threw away my old.paper instructions with my.older kit. Lol.
D

 

[Dan_P]

I think I get it now. It's red only if you are near the correct endpoint. If you overshoot, it goes back to blue to tell you that you added too much titrant.

It seems that when you dump in 0.6 mL titrant all at once, the indicator temporarily is pushed to the endpoint state condition. You’ll notice that within five seconds the system equilibrates and the indicator now correctly shows that the end point is not yet reached (Pink). I suspectif you put in 0.6 mL of titrant more slowly, the blue color would not show up.

 

[taricha]

Thank y'all for explanations.
Wow, this all sounds very dramatic!
I hope the trade off for all this blue-pink-blue pingpong is a nice sharp endpoint.

 

[piranhaman00]

Is that how mine sounds pirahna?

Cuz that is correct. Idk when they did this update... i just had to use the new method last night cuz i threw away my old.paper instructions with my.older kit. Lol.
D

Im not sure, I struggled reading what you wrote.

 

[monkeyCmonkeyDo]

Lol. Typical

 

[Snoopy 67]

I would NOT dump that much from the syringe unless you know your CA is above the corresponding level.
If you are not sure start with less to get a baseline.

 

[monkeyCmonkeyDo]

Its new instructions. New process. Please understand. Cal is now a 2 step. Not 3.
D

 

[ReefRusty]

You can also do half to get more from your test kit.
1ml tank water
1/2 scoop.
And contents from red cap syringe to 0.5ml and till its at 0.3 then 1 drop at a time.
Then you can just multiply x2 when you have the end result

 

[Scorpius]

I never had a problem with the old Salifert calcium test kit. Sigh.... change for changes sake again? Wish companies would stop this nonsense.