Dropper Bottles for Test Kits

[hyazakyte]

Does anybody else have problems trying to get single drops out of the reagent bottles?? I would have thought that it would be a good idea to supply in those bottles which have a rubber top (as for eyedrops) that you can squeeze to regulate the number of drops. Not sure if it would cost more but it would certainly result in less wastage on losing too much reagent per test and eliminate any risk of contamination.
Any thoughts?

 

[PlurredChemistry]

I agree, the tops of the reagent bottles suck. I've actually started dropping the reagent on the plate first and scraping the pill onto the liquid. Makes aiming a bit easier...
Mateo

 

[Soma]

I think you can say the problem with the droppers for every reagent bottle from every manufacturor is a universal one.
The main problem is that the reagents are *highly* acidic - They really do eat through just about anything including rubber and will even react somewhat to plastic. One of the only solutions is to contain it wholely within glass dropper.

 

[aj]

Yes, the reason has to do with the nature of the reagents. We have experimented with various droppers. Pls. look up some previous threads on this subject to find a more detailed explanation.
aj

 

[johnboy]

Testing kits produced by Chemical Solutions Australia are packaged with the plastic dropper lid seperate. They have a "travelling" lid, which you take off then screw the dropper lid in place. If you wanted to (carefully) use an eyedropper you could use these kits and just not put the dropper cap on. Does this make sense?

 

[stardragon]

It's funny, I've also found the dropper dispensers (in the x-treme kit, anyway) to be unusually hard to work with for some reason. They're the same kind of droppers you find in most essential oil bottles, and while thick oils (benzoin) don't like to come out that way, I have never had problems with thinner ones. Yet they're so frustrating with the reagents, which doesn't make sense. They're so thin and watery, the little air bubbles should have no problem rising and forming the drop. Maybe it's a surface tension thing. (My Marquis tester came from DanceSafe and doesn't have this problem, for whatever reason.)
</whine> </bitch> </complain>
I find that if I very gently shake downward that it encourages the drop to form, but then you gotta be careful or you get like six drops when you only wanted one or two.
If you have eyedroppers or some such to replace it, the dropper dispenser is merely a "plug" insert and can easily be removed from the neck of the bottle (rubber gloves though, please).