getting exactly 10ml in the testing kit for measuring chlorine

Jump to latest Follow Reply
A

armyofda12mnkeys

Active member
Jun 29, 2020
30
Philadelphia, PA
Sometimes its hard to see in the cylinder if its at 10mm or just at it but the concave part goes under the 10mm (and hence not really at 10mm?).

I thought I saw some product you can insert into the cylinder to push excess water out (well i guess Im not sure how it works, maybe someone can enlighten me... maybe it just measures exactly 10mm to the top and you pour it into the cylinder after).
Not sure what that product would look like, is that this?

Printables

www.printables.com www.printables.com
Any place to buy a pre-made version?

Thanks!,
Ari
 
Taylor Samplesizer is what you are looking for.

Why is the SAMPLE SIZER measuring tool only good for the Taylor tube?

This is driving me crazy - why would it be that I can't use the sizer with the TF-100 tubes? Isnt 10 ml the same for both tubes? thanks...
www.troublefreepool.com www.troublefreepool.com

Taylor sample sizer. Unnecessary and love it

Finally got the Taylor sample sizer. I thought it was a waste of money until I used it. It is so nice not having to add a little, pour some out, add a little more, too much…. Seems like an under appreciated tool in the kit if you test a lot.
www.troublefreepool.com www.troublefreepool.com
 
  • Like
Reactions: armyofda12mnkeys
ajw22 said:
Taylor Samplesizer is what you are looking for.

Why is the SAMPLE SIZER measuring tool only good for the Taylor tube?

This is driving me crazy - why would it be that I can't use the sizer with the TF-100 tubes? Isnt 10 ml the same for both tubes? thanks...
www.troublefreepool.com www.troublefreepool.com

Taylor sample sizer. Unnecessary and love it

Finally got the Taylor sample sizer. I thought it was a waste of money until I used it. It is so nice not having to add a little, pour some out, add a little more, too much…. Seems like an under appreciated tool in the kit if you test a lot.
www.troublefreepool.com www.troublefreepool.com
Click to expand...

Excellent, thats exactly the product I was looking for. Thanks!
 
Best thing I got from Leslie’s was a sample bottle with a drip top. I now use it to get enough water from the pool for all the tests, and then I just add drops to the test tube until the bottom of the miniscus is at the line. And I’m pretty sure that one drop too little or too much isn’t going to change the result enough to matter. Even if the FC reading was +/- 1ppm it wouldn’t change much in what I do.
 
  • Like
Reactions: poolowner65 and Dirk
jwiegley said:
Best thing I got from Leslie’s was a sample bottle with a drip top. I now use it to get enough water from the pool for all the tests, and then I just add drops to the test tube until the bottom of the miniscus is at the line. And I’m pretty sure that one drop too little or too much isn’t going to change the result enough to matter. Even if the FC reading was +/- 1ppm it wouldn’t change much in what I do.
Click to expand...
Exactly how I do it. The Leslie's sampler is plenty accurate enough, very fast, and it both collects and dispenses. Which is, at least, one less piece of stuff to dig out and then use and then clean. Others like their syringes and Sample Sizers, and that's great, but I can't imagine anything easier than just squirting out of the Leslie's container.

But here's what really makes it work. The SpeedStir. In addition to making testing almost a delight, and much faster, and much more accurate... it has a light, that shines up through the test vial and lights up the water, the minicus and the vial's markings. It makes the metering out of the water super simple and easy to see.

So --> sample your water from the pool in the Leslie's container, put the test vial onto the SpeedStir, turn on the light, squirt the amount needed for the test right out of the Leslie's sampler into the vial, drop in the SpeedStir "pill" and you're ready to titrate and count drops. That is the absolute fastest, easiest method, IMO. You then rinse out the vial and the pill and you're done.

Get yourself a SpeedStir and a Leslie's sampler (it's free) and give that a try.
 
Last edited:
  • Like
Reactions: reggiehammond, Newdude and poolowner65
Already using the SpeedStir and Leslie's drip-top to drip it in, just thought I'd using something more accurate than my eyes, so not slightly under-or-over with "concave meniscus aka wetting", which makes it a little hard for me to judge (I was thinking 1mm over or under is 10%... which someone on Amazon mentioned when making the case the Taylor Samplesizer is actually bad at... but its prob better than my eyes :) )... that review below:

1722431448393.png
 
I use my old little CYA squirt bottle to squirt in my 10 ml. Fill that little sucker just past the 7.5 mark and it's usually pretty dang close.

The kids (with their freakishly good vision 🤓) tell me that I'm under or over... but I figure if we're off by drops, in the grand scheme we're not doing too bad.
 
armyofda12mnkeys said:
Already using the SpeedStir and Leslie's drip-top to drip it in
Click to expand...
Hmm. As suggested, do you wear cheaters? I keep x2, x3 and x4 cheaters handy, to "zoom in" when I need to. I keep a x2 on a hook inside the cabinets above my testing area (I test indoors in my laundry room). In a pinch, when I really need to zoom in (my brother taught me this one), you can wear two pair. x2 and another x2 will get you x4. x2 and x3 will get your x5 (or x6, not sure if they're multiplying or adding). I can see just about anything with the right cheaters.

And that covers the only other thing I can suggest: where you're testing. I test in a windowless room with a dark counter top and very bright under-counter LED lights. So ambient light and direct light are 100% controlled, not variable like it is outside from sun or clouds or multi-colored backgrounds (plants, house, fence, etc).

Hmm, I wonder if one of those digital kitchen scales would be accurate enough. Put your SpeedStir and vial with pill on it, zero it out, and drip-drip the pool water until the digital scale reads 10g (10 millileters of water = 10 grams). Now I gotta go try that.
 

Enjoying this content?

Support TFP with a donation.

Give Support
Dirk said:
Hmm, I wonder if one of those digital kitchen scales would be accurate enough. Put your SpeedStir and vial with pill on it, zero it out, and drip-drip the pool water until the digital scale reads 10g (10 millileters of water = 10 grams). Now I gotta go try that.
Click to expand...
I have a kitchen scale too - now I am intrigued if it's sensitive enough to pick up 10 mL of water...
 
I have one of these and it works quite well. It's accurate to 1g, and I just drop-dropped until I got 10g and that puts the meniscus dead on. There are kitchen scales that can resolve to 0.1g, too, if you want to get super accurate, I suppose. The LED readout on the scale is very easy to see.


I use this scale for many things, so the $26 is a reasonable expense.

Edit: I didn't put the pill in first, as I wrote above, but I suppose it would work correctly either way.
 
JessBlount617 said:
So mine was nowhere near accurate…
Click to expand...
Well, yes and no. One could "calibrate" the process. So if the meniscus is correct at 9g, or 11g, then you could still use your scale. It would only be a problem if the scale was so bad that it wasn't consistent. Or like I said, there are 0.1g-accuracy scales available.

I didn't even think about just weighing the vile. I put my SpeedStir on the scale, too! Maybe makes more sense to just have the vial, der!

Either way, I think with the right scale this is a viable solution for someone that can't see the meniscus well enough.

And remember, we're not mixing rocket fuel. These tests are only accurate to about 10% anyway, compounded by inaccuracies in the pool's water volume and age of the chlorine, the age of the testing chemicals, etc, etc. This is a case where close enough really is close enough.

If you're testing and dosing your water and you never get algae and you or your yard never stink like a chlorine factory when you get out, then your testing MO is probably plenty accurate.

Edit: I see you have a TF kit. There was a point where the markings on the vials they included were not accurate. I don't know if that got fixed or not.
 
Last edited:
reggiehammond said:
1 ml of water should be ~1 gram
Click to expand...
Actually, 1ml of water is exactly 1g. The units were defined that way. Though to be even more exact about it, you have to take into account the water temperature and ambient air pressure, too. So your "~1g" is also true!
 
Last edited:
  • Like
Reactions: PoolStored and Dirk
Dirk said:
Actually, 1ml of water is exactly 1g. The units were defined that way. Though to be even more exact about it, you have to take into account the water temperature and ambient air pressure, too. So your "~1g" is also true!
Click to expand...
I knew from my line of work that temperature, elevation, etc all affected it slightly; so that's why I couched it "approximately."
But for most purposes, who cares about that small variability!
 
  • Like
Reactions: Dirk

Enjoying this content?

Support TFP with a donation.

Give Support
You must log in or register to reply here.
Thread Status
Hello , This thread has been inactive for over 60 days. New postings here are unlikely to be seen or responded to by other members. For better visibility, consider Starting A New Thread.
Top Bottom
Back
Jump to latest Follow Reply