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Old 12/06/2017, 03:16 PM   #1
Mohammed
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Hanna Alk Checker Syringe

http://www.reefcentral.com/forums/sh....php?t=2092674

Hi,

I bought the dkh checker recently and a bit confused on the filling of the 1ml reagent.

As per the thread linked. The Hanna rep. advises filling it as per the picture. I just want to confirm the correct piston position. The syringe itself is a bit confusing. At the bottom of the syringe is the 1.0ml and at the top is 0.1ml so its inverted. Above the 0.1ml line is a few more graduations which im assuming is 0.0ml.

As per the pic in the linked thread the piston position when using the tip included is at the 0.0ml line. Had i not looked closely i would have probably read the 0.1ml as being the line to draw at. In the linked thread the pic is the same syringe that was included. A bit confusing as in some videos it appears the syringe says 1.0ml at the top of the syring like how any normal syringe is graduated.


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Old 12/06/2017, 03:43 PM   #2
bertoni
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The picture shows a syringe drawn up to its capacity, but I think the text with the picture is a bit off, and the syringe should contain 1.0 ml of titrant, as you've indicated. Yes, the lines above the 0.1 level should take you to zero.


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Old 12/06/2017, 11:41 PM   #3
Mohammed
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Ok, thanks so the piston position at "0.0ml" should be the required 1.0ml reagent to perform the test.


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Old 12/07/2017, 06:53 PM   #4
bertoni
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Yes, that's correct.


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Old 12/08/2017, 06:42 AM   #5
homer1475
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Glad I clicked on this thread.

I just quickly looked at the syringe and assumed the 1 was 1ml when in fact it was .01. I didn't realize the syringe was backwards from most others.

I've only been adding .9ml of titrant.


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Old 12/09/2017, 09:06 AM   #6
Mohammed
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Yeah, does make a marginal difference in the reading.

Thanks all.


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Old 12/12/2017, 03:15 PM   #7
smatter
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Whawhut!? I've also been only using .9 ml all this time


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Old 12/14/2017, 03:10 AM   #8
Gtboosted89
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Quote:
Originally Posted by smatter View Post
Whawhut!? I've also been only using .9 ml all this time
Haha that sucks. Hope it didn't cause any issues


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Old 12/14/2017, 06:55 AM   #9
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Right? I had a good laugh, what a dunce. It's all good and stable, just a little off what I thought it's been.


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