Will these strips absorb the color of the liquid being tested? You mention urine and I will be testing wort, both would seem to mix with the colors?
271801
It really doesn't matter what you are testing. the color doesn't really "absorb" it just tell you what number of level it is at. One thing you should know that the longest you stay with ph strip in there , paint may seem like it is coming off but really not. It is just melting because strip is probably soon to be old or stay there longer than supposed. This strip are high quality than china made based strips . If you are wondering wheter paint melting innterupting wit level? It really doesn't. I don't think it have anything in there.
271802
It may not absorbed but melt paint. I am not sure abt wort, it is supposed be something liquid that has affected of ph balanced. Not materiAls unless you ask for body physical ph strips like police use when someone died on scene
271803
The directions suggest urine or saliva. Not sure about anything else. The strip turns a color based on the value of the ph. It gives you a numeric result when comparing the darkness of the strip (yellow to green) to the result listed on the box. Needs to be around 7 to be considered alkaline enough. Sorry not to have a better answer.
1668639
WTF are you talking about....these test strips work... I tested someone dirty, and someone clean....they work,,buy them... they are only 10 bucks....
1716252
The pH test tape works on saliva. Urine if concentrated or chemically colored (i.e. phenazopyridine) could produce an inaccurate color change. It is especially useful for eye fluid pH in chemical exposures to gauge the success of ocular irrigation. So testing on clear fluids is more accurate.
108963
The instructions should be on the backs of each packet. It says "dip strip into urine. Take out after 3 seconds and lay the strip flat. Read results in 5 minutes." Don't dip strip past the max line and test line should be about the same darkness or darker as the control line to be counted as positive. These strips are working just fine for me and will order again. I'm wondering which ones you got if they aren't individually wrapped with instructions.
1048507
The test strip you are using is not accurate/sterile enough to accurately test the PH of water...One thing that everyone should know about these (and other) pH test strips is that they work based on the TDS (total dissolved solids) that are present in the water you are testing. If you are trying to test a true distilled water (with nothing in it, no TDS) the strips won't be effective and I'd recommend you use a test drop for the water sample.
1890356
It depends on the pH range you are most interested in. My formulations require acidification from neutral (pH7 down to pH4.5) for which these strips are perfect (note where the colors transition in rows 1 and 2). Check the color range in the illustration: where there is a transition from one color to another in any of the 4 rows is where the strips are most useful.
608064
You put the water sample in the small bottle, being careful not to spill the powder in the bottle, fill to 1/2" below the top (cold water side), shake well, place on shelf and in 48 hrs, if it turns a yellow color, there's bacteria present, violet or blue, no bacteria. It does not tell you specifically which bacteria. Some reviews have reported a yellow/blue result, so it's inconclusive (my tests have all been pretty conclusive). If you get that, you might have your water tested professionally for a conclusive test. Only one test is included for each of the variants.
1526892
No, it can only tell you if which family of drugs what you put in there is primarily made up of. If it's a good mix, you'll get murky colors and you won't be able to tell anything. If you use this product a lot with different known purities of certain compounds and record the amounts you test with, you might be able to get a feel for how pure a certain specimen is by observing how fast the color changes and how sharp the color and opaque the liquid gets.
325838
No. You would want the AquaChek Salt Test Strips. You can also search for the "Aquachek Salt System" which includes both the AquaChek Yellow and the AquaChek Salt Test Strips together.
1581642
I purchased this product specifically for testing the pH of water. It's actually a test for the pH of water for plants. I wasn't able to find another good product for specifically testing the pH of drinking water, so I got this one and it worked well for me. However, it isn't for testing urine. There are many products out there (usually strips) that are made specifically for testing the pH of urine. You can find pH strips for analyzing urine right here on Amazon and you can see from other user's feedback if they are good or bad. If you are still interested in possibly using this product I would go directly to the company and ask them your question since it's their product.
1570500
Not that I'm aware. Chlorine, acidity, ph... the usual suspects. Easy to use (not as easy as the strips I bought afterwards).
1190435
The urine stains (and other stains) are better seen when they are dried. This is when it starts forming the fluorescence crystals that make it show up. If the urine or stain is still wet, the crystals that will fluoresce under this wavelength will not show up as the the neonish yellow/green or brighter white (the colour depends on the stain / fluid type as well as how long it has set).
2159704
Did you ever do this test? I am very interested to know if the residue comes from the water or your feet. I have a water distiller and I can get a residue left from our tap water (without putting my feet in it).
1367847
I don't understand the question. I have no test strips available except for my own personal use.
238449
These test strips are for chlorinated pools. Drinking water has a much lower chlorine level, even before filtering. I'd check something for use in an aquarium where the desired level of chlorine is zero
2239910
Im the last person to answer this one. Both boxes i purchased tested on distilled water, tap water and my spit the same reading. i never could get the strips to change from the same reading. I do know under normal testing (other strips i did notice a change when water was tested).
2258362
All my tests worked great!! I would recommend them to everyone!! Even my friend liked them. Since they are just the strips, it's very possible for someone to get it wet in the wrong place, not lay it flat, look at the results too soon, not test correctly, etc. If you feel these tests aren't working, then go buy ones at the store. I was just trying to help. Regardless of your profession, everyone can make mistakes and not be aware of it.