salifert magnesium test direction help

masonicman · 01/17/2008, 08:14 PM

I think I may have been testing for magesium with the salifert kit incorrectly. I just want to make sure I'm reading it right. The direction state to.

1 Place the plastic tip firmly on the 1 ml syringe and draw into this Mg-3 reagent until the lower end of the black syringe part is at the 1.00 ml mark.

2 Hold the syringe with the tip facing upward and read the position of the upper end of the black scringe part.

My question for direction #1 is? When the syringe is in the reagent 3 and I am drawing it up into the syringe. Which part of the black syring part is the lower end? Is it the part closer to the yellow plastic tip?

My question for direction #2 is. When I hold the syringe with the yellow tip facing up. Which part of the black part is the upper end. Is it the black part closer to the yellow tip again?

Ronny#66 · 01/17/2008, 08:26 PM

Did you get my 2nd pm

Ronny#66 · 01/17/2008, 08:28 PM

i find salfert difficult to use. Got one from Dr. Foster & Smith and there direstions were nothing like what was sent. You need to be shemist to understand them.I don't like salfert.

Ronny#66 · 01/17/2008, 08:29 PM

How ya like em typos ?

kau_cinta_ku · 01/17/2008, 09:07 PM

yes your correct on both of your questions.

zotzer · 01/17/2008, 09:09 PM

In both cases, it's the end that is in contact with the solution in the syringe.

Tracy

asm481 · 01/17/2008, 10:31 PM

Actually you could use any point toward the end of the syringe. Just use the same point as the starting (1.00) as you do to find the end point. You are measuring the difference here, not the actual quantity in the syringe.

masonicman · 01/18/2008, 04:34 AM

Ok thanks. One thing about being a Test Engineer. I tend to read too much into things

lark · 01/18/2008, 07:30 AM

Quote:

Originally posted by zotzer
In both cases, it's the end that is in contact with the solution in the syringe.

Tracy

Very nice. I was trying to think of a way to explain this in less than 100 words. You did it in 16.

Nanz · 01/18/2008, 08:20 AM

Quote:

Originally posted by asm481
Actually you could use any point toward the end of the syringe. Just use the same point as the starting (1.00) as you do to find the end point. You are measuring the difference here, not the actual quantity in the syringe.

Exactly!

Thats also the reason it does not matter if there is air trapped between the liquid and the stopper, but you don't want any air bubbles between the liquid and the syringe tip.

01/18/2008, 04:34 AM	#8
masonicman Registered Member Join Date: Aug 2007 Location: NJ Posts: 1,313	Ok thanks. One thing about being a Test Engineer. I tend to read too much into things __________________ It is better to ask for forgiveness then to ask for permission.......... Current Tank Info: 75 gal mixed reef, 216w LED, Remora Pro skimmer, HOB fuge, 400w htr, ATO RO/DI, 90lbs LR and 1" SB.

01/17/2008, 08:14 PM	#1
masonicman Registered Member Join Date: Aug 2007 Location: NJ Posts: 1,313	salifert magnesium test direction help I think I may have been testing for magesium with the salifert kit incorrectly. I just want to make sure I'm reading it right. The direction state to. 1 Place the plastic tip firmly on the 1 ml syringe and draw into this Mg-3 reagent until the lower end of the black syringe part is at the 1.00 ml mark. 2 Hold the syringe with the tip facing upward and read the position of the upper end of the black scringe part. My question for direction #1 is? When the syringe is in the reagent 3 and I am drawing it up into the syringe. Which part of the black syring part is the lower end? Is it the part closer to the yellow plastic tip? My question for direction #2 is. When I hold the syringe with the yellow tip facing up. Which part of the black part is the upper end. Is it the black part closer to the yellow tip again? __________________ It is better to ask for forgiveness then to ask for permission.......... Current Tank Info: 75 gal mixed reef, 216w LED, Remora Pro skimmer, HOB fuge, 400w htr, ATO RO/DI, 90lbs LR and 1" SB.

01/17/2008, 08:26 PM	#2
Ronny#66 Registered Member Join Date: Apr 2007 Location: Twilight zone Posts: 1,839	Did you get my 2nd pm

01/17/2008, 08:28 PM	#3
Ronny#66 Registered Member Join Date: Apr 2007 Location: Twilight zone Posts: 1,839	i find salfert difficult to use. Got one from Dr. Foster & Smith and there direstions were nothing like what was sent. You need to be shemist to understand them.I don't like salfert.

01/17/2008, 08:29 PM	#4
Ronny#66 Registered Member Join Date: Apr 2007 Location: Twilight zone Posts: 1,839	How ya like em typos ?

01/17/2008, 09:07 PM	#5
kau_cinta_ku Moved On Join Date: May 2005 Location: NW Iowa Posts: 8,669	yes your correct on both of your questions.

01/17/2008, 09:09 PM	#6
zotzer Registered Member Join Date: Jul 2007 Location: Northern Virginia Posts: 346	In both cases, it's the end that is in contact with the solution in the syringe. Tracy

01/17/2008, 10:31 PM	#7
asm481 Registered Member Join Date: Jun 2006 Location: Kenosha Wisconsin Posts: 593	Actually you could use any point toward the end of the syringe. Just use the same point as the starting (1.00) as you do to find the end point. You are measuring the difference here, not the actual quantity in the syringe.