After 24 hours at 35 deg C the solution stayed yellow but became turbid rather than completely clear. Is this still a negative test?
1805365
As long as the water sample did not turn blue and none of the suspended particles exhibited any blue specks or blue color, then the sample can be considered negative for coliform bacteria.
2005415
If there is color to the line- I'd imagine it's positive. The line that showed up (within 5 min for me) had no color. It sort of looked like a shadow of a line.
745495
your ph could be off or your alkalinity. if the ph is out of wack it will give you bad readings thru out. i thing it would be a good idea to take a water sample to your nearest pool store and have them check your sample, between the shock and pool first aid my water was clear in a mater of hours and my pool was green when i took the cover off this year, good luck.
1072458
The serum I ordered is turbid (slighty cloudy) not clear, but it is definitely not orange.
369403
it depends on how many drops you put in it. we are keeping it at the beginning of the purple bar b/c super purple we don't' need and also helps saving some drops for later. we did the test at the beginning when we first got the drops. (purple is alkaline). their recommendation was going to be super alkalined. i hope this helped
119210
For know it hasn't done that to me, and I had it for quite while now. Over eight months at least. So it should be fine for a long time period. I will update my answer if it turns yellowish.
1920570
No, my bottle is totally clear. I would contact the company for a new bottle.
838732
I used the same one for probably a year or so. I did not notice any yellowing or discoloration.
889873
I'm not totally sure, however I used these ( all of them ) over a two week span, while comparing them to the walgreens kit I bought, as well as the more strict 15 ng/ML test you can get here on Amazon as well, and all of them came back clean. I went and took my test at the lab and came back clean as well. Goodluck, and don't stress as much as I did- it was uneeded.
414811
It's mostly clear, but tainted yellow-ish. The consistency is about the same as water, but it's hard to tell because the bottle has a dropper attached to it.
2022335
Thick yellow gel. It clouded my water up when I first added to my 55 gallon tank, but cleared up within an hour or so. I haven't lost a fish, as of yet, by directly adding to my tank as it says and the bottle is almost empty (purchasing another on payday). It has really helped balance my tank and I will definitely be buying again very soon!
1473612
I have the same issue. Comes out "yellow" and thick, but when it hits the water it congeals into a mass of gel, which my fish think is food, and sinks to the bottom. Don't know if it's this but my tank (5 gal) suddenly became cloudy. I can't find an expiration date on the bottle, so I'm calling Tetra. Additives always scare me.
1514983
Sounds like you may have a defective test. You should definitely get 2 full lines for a positive result. Good luck!
23627
I like this product. I am not a chemist, so I don't know how I could attest to the purity. Apparently, from your comment, you have some way to ascertain purity? If so, why ask? I had merely heard that OptiMSM is a good product, and I have heard that this is a good company. You are on your own from there.
1455396
You mean after you test and it's pos. Or negative can you then send stick to be analyzed. Probably not enough urine absorbed to retest same urine or anyway to verify it was you who took the test to show someone that look I was or is positive or negative .. But in 98% of the tests were good.. A couple out of a 100 I have used something about urine above the line or mishap didn't register correctly tests are good..
264692
It does not yellow over time. My son used it for a month. I wish I had used this with him years ago.
406371
It is clear and will turn yellow when older - no expiry. I have been using mine even though it went a bit yellow realizing that there is some controversy on whether it should be thrown out - doesn't seem to have any negative affect