What is the "after-market" Salifert-style pink dispensing needle?

[X-37B]

Yes, you need to look at the travel of the plunger end, not where anything else lines up. A different plunger may not allow use of the full 1 mL of the barrel when pushed all the way in to pulled all the way out if something else (besides the plunger end) is limiting the travel.

Cool! I will try that when I get home tonight and report back.
Would not surprise me that it is something that simple! Thanks

 

[X-37B]

Ok did the test. Did not remember the numbers but here they are now.
Someone else needs to run the same test to verify but I did all 3 twice.
Pics are of salifert syringe and the other. Both are 1ml.
Notice the difference in plunger style.
Salifert is on the right.
Other in the middle.
Other with plunger cut off is on the left.

Test:
Hanna Alk 125 or 7.0
Salifert .54 or 7.0
Other .60 or 6.1
Other with plunger tip cut off. .54 or 7.0.

 

[Randy Holmes-Farley]

The numbers you quote for mL are based on what exactly?

Are you doing anything to remove air after drawing the fluid up into the syringes?

 

[X-37B]

The numbers you quote for mL are based on what exactly?

Are you doing anything to remove air after drawing the fluid up into the syringes?

The numbers are whats left in the barrel. Then I use the chart for conversion.
I do not remove the air as per the instructions.

 

[X-37B]

Ok another test.
The Hanna test uses a long plunger style.
I check alk every morning.
This morning alk 128.
I used the salifert short plunger and got 127. So the same.
Not sure why the salifert alk color test is different as I go to the same endpoint with each plunger style.
I agree they should be the same but its just my experience.
Anyone else want to run a similar test?

 

[Randy Holmes-Farley]

The numbers are whats left in the barrel. Then I use the chart for conversion.
I do not remove the air as per the instructions.

Yes, but exactly how did you determine the number?

 

[X-37B]

Yes, but exactly how did you determine the number?

I go to the same endpoint/color change that I always do for both plunger styles.

 

[Randy Holmes-Farley]

I go to the same endpoint/color change that I always do for both plunger styles.

I mean what exactly do you look at on the syringe to indicate the volume at the start (presumably 0 mL)and the volume remaining?

Is the thing you look at on the plunger showing exactly zero at the start, and then that same thing shows the exact volume remaining at the end?

 

[Isaac Alves]

This is simply following up on my previous post regarding pictures of the 3rd party dispensing tip.

**NOTE @Randy Holmes-Farley comment that the dispensary tip attachment does not affect volume —- only allows easier dispensing of liquid, and the gauge of the hole allows smaller or larger droplets. **

I purchased the Utoolmart Industrial Blunt Tip Tapered Dispensing Fill Needle at 22ga.

It happens to be blue so you can see in the pics below the comparison of the Salifert dispensing tip, which is pink, and the Utoolmart blue one. The fit is perfect, quality and appearance is the same.

The appearance is the same:

The fit is the same:

The hole diameter is larger in the Salifert. But I purposely got a smaller hole. I believe the Salifert is 18ga.

At least now I have a life time supply

Happy reefing.

 

[Isaac Alves]

Tip does not matter.
However, the salifert plunger is different than the ones pictured.
I have 100's of the ones pictured.
If I use the one with the extended plunger I get different readings.
If I cut the extended plunger off so it equals the salifert one the readings are the same.
This drove me nuts one day as I use Hanna alk and salifert as a cross recerence.
I could not find my salifert syringe
And just used a new extended plunger one.
I tested salifert alk a few times and then went and looked at another salifert test kit and noticed the difference.
I dont remember the exact difference but I could go test now and report back.

Now regarding the syringe....


You’re right!!!! I’m getting old — didn’t occur to me the difference until I opened the syringe package. I was not careful in looking at the plunger style on the Salifert. I’m going to take some pics because I’m curious as to ensuring proper readings.

 

[Isaac Alves]

Here are the side-by-side images of the Salifert and BStean syringes.

Salifert on left. BStean with deep plunger on right.

Exposed. The plunger styles are very different:

Salifert:

BStean Deep stem plunger:

—————-
THE REAL QUESTION — for @Randy Holmes-Farley or any other experts familiar with this reason for the style differences:

I use the Salifert flat plunger by sucking in fluid first, then, while the syringe tip is still submerged I expel the fluid to remove air and then pull the fluid all the way past the 1.0ml mark, and then push down to align the plunger base with the 1.0ml line.

The plunger base alignment looks like this before I run the test:

So now, doing the same process, where do I stop the plunger?

With this new deep stem style plunger should I measure with the outer ridge aligned? Like this:

Or, to where the tip of the deep stem aligns with the 1.0ml line? In fact, this style of plunger, you can’t pull the plunger further up than what I’m showing below...like it was made to be just pull all the way up until it stops. Like this:

Thank you everyone for the help. It’s silly things like this that trip me up all the time.

Happy reefing.

 

[X-37B]

I mean what exactly do you look at on the syringe to indicate the volume at the start (presumably 0 mL)and the volume remaining?

Is the thing you look at on the plunger showing exactly zero at the start, and then that same thing shows the exact volume remaining at the end?

Yes I believe.
I start at zero on both and finish just like the last posts pictures.
I do not go to the tip.
I go to the bottom barrel mark just like saliferts.
When I ran the alk with both plunger styles the numbers on Hanna were the same.
They were off on the salifert.

 

[X-37B]

Here are the side-by-side images of the Salifert and BStean syringes.

Salifert on left. BStean with deep plunger on right.

Exposed. The plunger styles are very different:

Salifert:

BStean Deep stem plunger:

—————-
THE REAL QUESTION — for @Randy Holmes-Farley or any other experts familiar with this reason for the style differences:

I use the Salifert flat plunger by sucking in fluid first, then, while the syringe tip is still submerged I expel the fluid to remove air and then pull the fluid all the way past the 1.0ml mark, and then push down to align the plunger base with the 1.0ml line.

The plunger base alignment looks like this before I run the test:

So now, doing the same process, where do I stop the plunger?

With this new deep stem style plunger should I measure with the outer ridge aligned? Like this:

Or, to where the tip of the deep stem aligns with the 1.0ml line? In fact, this style of plunger, you can’t pull the plunger further up than what I’m showing below...like it was made to be just pull all the way up until it stops. Like this:

Thank you everyone for the help. It’s silly things like this that trip me up all the time.

Happy reefing.

Do the test like I did if you can. I would be interestes in the results.

 

[Isaac Alves]

Measuring 4ml of the same water using (left to right) one default Salifert syringe and tip, BStean syringe and Salifert tip and BStean syringe with Utoolmart dispensing tip.

So, using the included Salifert syringe and tip and carefully using the standard process of leveling the volume in the syringe I get .44ml left / 8.6dkh

Using the bstean syringe and Salifert tip and carefully using the standard process of leveling the volume in the syringe the plunger NOT THE STEM, I get .44ml left / 8.6dkh

Using the bstean syringe and Utoolmart tip and carefully using the standard process of leveling the volume in the syringe to the plunger base NOT THE STEM, I get .44ml left / 8.6dkh

All using the plunger base, not accounting at all for the extended stem I get the same readings using the same test kit and water collected from same source and time.

The left most vile started changing color to a lighter pink after time... could be the time, lighting, or something else.

I didn’t even attempt the stem tip test since it’s apparent that it’s not meant to be used.

Also, I’ve learned I really do not like the BStean syringe. They are not as good quality to the Salifert included syringe. The plunger in the Salifert is much more air tight and appears more robust.

The label on the standard Salifert syringe reads B-D PLASTIPAK.

 

[X-37B]

Measuring 4ml of the same water using (left to right) one default Salifert syringe and tip, BStean syringe and Salifert tip and BStean syringe with Utoolmart dispensing tip.

So, using the included Salifert syringe and tip and carefully using the standard process of leveling the volume in the syringe I get .44ml left / 8.6dkh

Using the bstean syringe and Salifert tip and carefully using the standard process of leveling the volume in the syringe the plunger NOT THE STEM, I get .44ml left / 8.6dkh

Using the bstean syringe and Utoolmart tip and carefully using the standard process of leveling the volume in the syringe to the plunger base NOT THE STEM, I get .44ml left / 8.6dkh

All using the plunger base, not accounting at all for the extended stem I get the same readings using the same test kit and water collected from same source and time.

The left most vile started changing color to a lighter pink after time... could be the time, lighting, or something else.

I didn’t even attempt the stem tip test since it’s apparent that it’s not meant to be used.

Also, I’ve learned I really do not like the BStean syringe. They are not as good quality to the Salifert included syringe. The plunger in the Salifert is much more air tight and appears more robust.

The label on the standard Salifert syringe reads B-D PLASTIPAK.

Interesting as that is what I expected but my results are different.
Just did them again.
Anyway I use Hanna and salifert is a backup.
I will continue to use the syringe salifert supplies.
Thanks for the tests.

 

[[Cameron]]

We used an adjustable laboratory micro-pippete for dosing "back in the day". You can put different tips on them for saltwater, RO water, etc. Most have a range so if picking one up get a 1mm-10mm or so. Something like this:

Amazon product

Sure made blasting through a wall of testing easier and you don't have to worry about the tip, plunger, etc.

 

[Randy Holmes-Farley]

Here are the side-by-side images of the Salifert and BStean syringes.

Salifert on left. BStean with deep plunger on right.

Exposed. The plunger styles are very different:

Salifert:

BStean Deep stem plunger:

—————-
THE REAL QUESTION — for @Randy Holmes-Farley or any other experts familiar with this reason for the style differences:

I use the Salifert flat plunger by sucking in fluid first, then, while the syringe tip is still submerged I expel the fluid to remove air and then pull the fluid all the way past the 1.0ml mark, and then push down to align the plunger base with the 1.0ml line.

The plunger base alignment looks like this before I run the test:

So now, doing the same process, where do I stop the plunger?

With this new deep stem style plunger should I measure with the outer ridge aligned? Like this:

Or, to where the tip of the deep stem aligns with the 1.0ml line? In fact, this style of plunger, you can’t pull the plunger further up than what I’m showing below...like it was made to be just pull all the way up until it stops. Like this:

Thank you everyone for the help. It’s silly things like this that trip me up all the time.

Happy reefing.

No, you do NOT use the end of the plunger.

You can use any point on the plunger you want that starts at a volume and ends at a volume. The volume dispensed is the difference. . They will all be identical. Easiest is to take the black ring that starts at zero.