thebean
Hazard to Others
Posts: 116
Registered: 26-9-2013
Location: Minnesota
Member Is Offline
Mood: Deprotonated
|
|
Store Bought Scales
Does anyone know of any stores that sell scales down to .01g? I looked around on this sub forum and couldn't really find anything.
"You need a little bit of insanity to do great things."
-Henry Rollins
|
|
|
thesmug
Hazard to Others
Posts: 370
Registered: 17-1-2014
Location: Chicago, Il (USA)
Member Is Offline
Mood: No Mood
|
|
I think that some chef/food service supply stores sell scales at a res. of 0.01 but I'm unsure of how accurate they are. They also seem to be very
unreasonably priced. I believe Whole Foods sells such scales but you'll have to check your local store.
[Edited on 2/19/14 by thesmug]
|
|
|
Zyklon-A
International Hazard
Posts: 1547
Registered: 26-11-2013
Member Is Offline
Mood: Fluorine radical
|
|
At Walmart I saw some scales for weighing food, some of which say they can weigh 0.1g, but I doubt that they are really that accurate.
|
|
|
mr.crow
National Hazard
Posts: 884
Registered: 9-9-2009
Location: Canada
Member Is Offline
Mood: 0xFF
|
|
Try your local hemp store
Double, double toil and trouble; Fire burn, and caldron bubble
|
|
|
Nickdul
Hazard to Self
Posts: 96
Registered: 13-2-2012
Location: Bulgaria
Member Is Offline
Mood: No Mood
|
|
Look for scales that are used in jewelry or for loading firearms. These are generally small and come with calibration weights. Testing my 10g/0.001g
scale against standardized weights shows deviation of +/- 3 mg along the entire range, which is not bad for a <$20 Chinese scale. I also have a
500g/0.01g model, but I haven't done any testing. Watch out for contamination, as these scales are not meant for continuous lab work and if exposed to
chemicals (powders and deliquescent chemicals getting inside) will malfunction. I had one measure inaccurately, so I opened it and cleaned it out with
pet. ether and a no-lint cloth, and it worked perfectly. Another was dropped from a considerable height and the casing was severely damaged. Opening,
reassembling and calibrating it did the job.
Here are some models:
http://www.ebay.com/sch/Pocket-Digital-Scales-/163827/i.html
Even if you are doubtful as to the accuracy and precision of such scales, the price justifies buying one for testing.
[Edited on 20-2-2014 by Nickdul]
|
|
|
ZIGZIGLAR
Hazard to Self
Posts: 79
Registered: 3-2-2014
Member Is Offline
Mood: No Mood
|
|
I second what Nickdul has said. For an accuracy of 0.01g, eBay Jewellery scales are the go. Just make sure you calibrate it, as Nick said. For 0.001g,
you're going to need to increase your budget dramatically, as even air movement can have a dramatic impact on accuracy, so eBay cheapos are likely to
be a complete waste of money vs Jewellers scales.
|
|
|
Mailinmypocket
International Hazard
Posts: 1351
Registered: 12-5-2011
Member Is Offline
Mood: No Mood
|
|
A while back I decided "what the hell" and spent 50$ on a milligram scale on eBay. It needs to be calibrated before each use and leveled with the fish
eye level. Usually it has a +\- accuracy of .003g. Here is the accuracy of it today without calibration, still not horrible for a made in china 50$
milligram scale.
The result of weighing standard Ohaus calibration weights (100mg, 1g, 10g). Its good for getting a ballpark range for milligrams but I wouldn't rely
on it entirely for very sensitive reactions of when you weigh valuable compounds. It also isn't as sensitive when adding or removing small amounts of
material once it settled on a weight, which is more concerning. You can easily intend to add 30mg but the display jumps up to a different value after
about 60mg has been added. I have found the 0.00g cheap scales to be more sensitive in that respect.
   
|
|
|
hyfalcon
International Hazard
Posts: 1003
Registered: 29-3-2012
Member Is Offline
Mood: No Mood
|
|
Notice, you get into quit a bit more money when you have to have real precision weights.
http://www.ebay.com/sch/i.html?_odkw=scale&_osacat=11815...
|
|
|
ZIGZIGLAR
Hazard to Self
Posts: 79
Registered: 3-2-2014
Member Is Offline
Mood: No Mood
|
|
You can get Digitial Scales like this with wind shield etc if you shop around. The calibration weights are often more expensive than the scales, aren't they
haha
|
|
|
Mailinmypocket
International Hazard
Posts: 1351
Registered: 12-5-2011
Member Is Offline
Mood: No Mood
|
|
This is the exact set I bought, albeit for about 10$ more. Highly useful though.
http://www.ebay.com/itm/271406485959?redirect=mobile
|
|
|
Nickdul
Hazard to Self
Posts: 96
Registered: 13-2-2012
Location: Bulgaria
Member Is Offline
Mood: No Mood
|
|
What Mailinmypocket says corroborates my personal experiences and for a beginner, I think this is the way to go.
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
