Average Reviews:
(More customer reviews)I needed a scale that could measure quantities less than 10mg and did not want to buy a $1500 piece of lab equipment. If you are careful and consistent with your measuring techniques, this scale is repeatable to within a few milligrams - often to its finest resolution of 0.001g. These are essential for this performance: 1) let the scale stabilize on a hard, flat and level surface. 2) Make sure the sample tray is properly seated inside the circular detent of the scale's metal measuring platform. If you're not careful, the sample tray (as provided) can touch the body of the scale, grossly throwing off the measurement. I glued a small piece of metal to the bottom of the sample tray raising it higher for more clearance. I'll often tap the table that the scale is on to help everything settle. 3) calibrate as described in the manual. 4) place and remove samples consistently and carefully - don't drop them. Even the slightest impact can throw off the measurement. 5) wait for ten seconds or so for the sample to settle. 6) for minuscule samples, use the ten gram weight in addition to the sample to put the scale in the middle of its operating range. With a little care, one will get closer to the performance of a lab-grade milligram scale than anything else for this price. Nice scale.
Click Here to see more reviews about: American Weigh Gemini-20 Portable Milligram Scale, 20 by 0.001 G
Take a handy little digital scale on the go and weigh items up to 20 grams in 0.001 gram increments. The little scale is great for weighing precious gems and other valuables. Its flip-down shield protects the delicate weighing surface. A removable stainless-steel weighing platform makes removing samples easy. The scale's included carrying case comes with tweezers, a tray, and a calibration weight. The unit is powered by 2 AAA batteries, which come included, and is backed by a 10-year warranty.
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