Hanna Alk Checker Syringe

Mohammed · 12/06/2017, 03:16 PM

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.

bertoni · 12/06/2017, 03:43 PM

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.

Mohammed · 12/06/2017, 11:41 PM

Ok, thanks so the piston position at "0.0ml" should be the required 1.0ml reagent to perform the test.

bertoni · 12/07/2017, 06:53 PM

Yes, that's correct.

homer1475 · 12/08/2017, 06:42 AM

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.

Mohammed · 12/09/2017, 09:06 AM

Yeah, does make a marginal difference in the reading.

Thanks all.

smatter · 12/12/2017, 03:15 PM

Whawhut!? I've also been only using .9 ml all this time

Gtboosted89 · 12/14/2017, 03:10 AM

Quote:

Originally Posted by smatter

Whawhut!? I've also been only using .9 ml all this time

Haha that sucks. Hope it didn't cause any issues

smatter · 12/14/2017, 06:55 AM

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.

12/06/2017, 03:16 PM	#1
Mohammed Registered Member Join Date: Oct 2014 Posts: 104	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.

12/06/2017, 03:43 PM	#2
bertoni RC Mod Join Date: Mar 2002 Location: Mountain View, CA, USA Posts: 88,616	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. __________________ Jonathan Bertoni

12/07/2017, 06:53 PM	#4
bertoni RC Mod Join Date: Mar 2002 Location: Mountain View, CA, USA Posts: 88,616	Yes, that's correct. __________________ Jonathan Bertoni

12/08/2017, 06:42 AM	#5
homer1475 Registered Member Join Date: Mar 2015 Location: Upstate NY Posts: 5,313	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. __________________ 80G SCA Build: http://reefcentral.com/forums/showthread.php?t=2560256 Originally posted by der_wille_zur_macht: "He's just taking his lunch to work"

12/06/2017, 11:41 PM	#3
Mohammed Registered Member Join Date: Oct 2014 Posts: 104	Ok, thanks so the piston position at "0.0ml" should be the required 1.0ml reagent to perform the test.

12/09/2017, 09:06 AM	#6
Mohammed Registered Member Join Date: Oct 2014 Posts: 104	Yeah, does make a marginal difference in the reading. Thanks all.

12/12/2017, 03:15 PM	#7
smatter Registered Member Join Date: Dec 2002 Location: Madison, WI Posts: 2,055	Whawhut!? I've also been only using .9 ml all this time

12/14/2017, 06:55 AM	#9
smatter Registered Member Join Date: Dec 2002 Location: Madison, WI Posts: 2,055	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.