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