Quote:
Originally Posted by rcalzadilla
Just received a drop checker I purchased on eBay. The glass type with the bell, and bulb at the other end.
The instructions read:
How to use it :
1. Fill the checker bulb with 2/3 of distill water then add 3 to 5 drops of indicator solution to blue color
2. Careful put the drop checker about 3 inches under the water level.
3. After a couple of hours, you can match the color of the indicator solution with the test card
The distilled water only turns amber/yellow as is the color of the regent.
Contacted seller buy insists it should turn blue.
Does anyone have any idea why it doesn't turn blue?
I tried using 4gKH water but only turns the water yellow.
PS: Seller now says this is a new regent, that it is supposed to be amber and not blue. I don't feel comfortable with this answer and his not knowing what color his product should be
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I just recently purchased this same item and tried to follow the same bad instructions (of course, before reading this thread). I contacted the seller for some clarification, and he claimed that the distilled water needed to have some kh added. I had assumed, based on the directions, that the included solution would have been premixed with a 4dkh indicator solution, but this is not the case. He also could not give me details on the contents of the solution that is shipped.
After mixing my own 4dkh water and adding it to the drop checker, adding even a single drop of the included solution (whatever it is) resulted in the drop checker water being an extremely dark yellow-green. When I rinsed the drop checker, I noticed that the water was blue when it was diluted. So, instead of adding drops of the solution directly to the drop checker, I added several drops to my 4dkh water prior to adding the water to the drop checker. This resulted in a drop checker mix that was the correct blue color.
Now the problem, of course, is that I have no idea what I am using as a ph indicator solution...but I'll give this a try for now under the assumption that it is a bromothymol blue solution.