Lamotte 4329-H Chlorine/Bromine Plus Phosphate Disk for Spin Lab, Pack of 50

Arrived on time. Spoke with Ryan on 11/17. Satisfied.

I would not be able to maintain my pool chemicals without this. Have not had a single problem for the past three years of use.

Ordered from seller: "In The Swim Pool Supplies" As described. Ordered discs in 3/2025 and received expiration date of 3/2027 (ie. perfect!). Appears to be a genuine product. Discs come individually sealed (ie. not 5 sleeves of 10).

Package come on time with product as described, will buy again.

Good

I received the package on time and intact.

Invested $70,000 for a new gunite pool! It is my first pool! Tried test strips,a joke! Tried taking sample to pool store a lot for testing! Then I came across the Lamotte Waterlink and have been living in Heaven ever since!!! $800 investment that made me an instant pro on keeping my water perfect!!! Best tool I have ever bought!!!!

This product has not worked in that it causes the machine to have to be recalibrated every time and gives false results on choline reads. Bad lot or just bad product have not be successful in getting someone to contact me.

LaMotte 4329-H Chlorine/Bromine Plus Phosphate Disk for Spin Lab, Pack of 50 I bought a new batch in 2025 may. To my surprise, now they come individually wrapped. I absolutely love that. In the past, they came in plastic clear bag and you had to keep it in a cool dark place. Next iteration, they packaged 10 in a foil bag and you had to keep closing the foil Ziploc... Sometimes the Ziploc failed so you had to use painters taped to keep it sealed. And now in 2025 these are individually sealed in its own foil package. Outstanding. LaMotte 4329-H is my favorite disc because it has all the fields that I want on my hot tub and my pool. .. both of which are salt cell-based. You definitely need to pay attention to the expiry date because it's actually a true expiry date... Your test results will get skewed when it starts to get beyond the date.... I mean, you could probably get away with it a few more months after the expiry date, but then it actually goes bad.