bobbyj206
Aquarium Advice Regular
Thanks so much. I think I can safely say that your time and effort is greatly appreciated by everyone here.
Thank you for your research!
Does anyone know where I can get more tubes? Preferably plastic? The leaky caps have cause me to drop my last two
The place I'm looking at getting the stoppers from also sells clear plastic tubes. I have the ID and OD measurements, so finding a close match shouldn't be hard...B/C of the shipping charge, it probably isn't worth buying just 2, but I might be able to grab some along w/ the stoppers. The only thing is that these don't have a 5mL mark on them.
Well I don't have ANY test tubes, so i would need 4 or 5.
And how much would those be total for 4?
If no one else want the tubes, I will try and find some on amazon
dmolavi said:For tubes, I would stick with glass...it is less likely to react with the reagents in the test solutions.
I received the 2nd set of samples today. Unfortunately, only one fit, but at least it was something to compare against the first in my nitrate shake, rattle 'n' roll. Both are the "double flange" type of cap.
This 2nd one that came in is meant to fit both 12mm and 13mm OD tubes, so the flanges are slightly thinner and more flexible so that they can conform to the narrower tubes. They performed as well as the first sample, but the engineer in me is worried that over repeated insertions and retractions, the thinner material may eventually fail to seal well.
Based on that, I'm going to go with the first set. I need to finalize pricing, but it's looking to be about a dime each plus postage, which should be able to go through first class instead of priority mail...
Number Price
6 $2.70
8 $2.90
10 $3.10
12 $3.30
20 $4.10
24 $4.50
dmolavi said:OK, so here is the pricing for the quantities that have been specified so far. These prices include shipping (a best guess; I haven't been to the post office to get official prices..I might lose a little with this, esp on the larger quantities).
Number Price
6 $2.70
8 $2.90
10 $3.10
12 $3.30
20 $4.10
24 $4.50These are the minimum prices I can offer because of minimum purchase requirements from the manufacturer, feel free to donate extra, I won't complain. I need to coordinate with the manufacturer to see what kind of lead time we're talking if everyone is on board.