Posted by aonomus on October 27, 2009
Update Nov 3, 2009: almost ready for some fun things…
1L and 500mL round bottom flasks, plus all the other bits for distillation. Enough to do reflux and workup. I have also gotten a separatory funnel (not shown) and other bits of glassware.
Upcoming soon will be a procedure for hydrolysis of vegetable based oils to obtain oleic acid, which amongst other uses will be for a ferrofluid procedure.
Oh what a lovely Tuesday morning, but what rouses me from my sleep so early?
My distillation glassware has finally arrived!
Just as a teaser, but perhaps down the road things like essential oil steam extraction and simple distillations will be posted.
Posted in Chemistry, Science, Shopping | Tagged: Glassware | 2 Comments »
Posted by aonomus on October 2, 2009
In the realm of intelligent battery chargers, there are far too many choices. Prices range from about $50USD to some in the $300 range and come with a whole variety of features. The problem is that the new emerging market is for cheap products that don’t perform, or don’t have the durability and quality expected for a complex device.
Most new intelligent battery chargers can charge, discharge, and cycle Pb, NiCd, NiMH, Li-ion, LiPo, and more recently LiFePO4. These chargers feature control over charging/discharging current. Contrast this to your ‘dumb’ chargers that are essentially trickle charge wall warts that push in around 0.5C that can overcharge NiCd/NiMH, or slow LiPo balance trickle chargers that come with RC helis sometimes.
The GT Power A8 charger sells for about $80USD + S&H, I got mine from HobbyCity.com. Read the rest of this entry »
Posted in Batteries, Electronics, Reviews, Robotics | Tagged: Battery charger, Review | 2 Comments »