Lab Scale 5000gx0.01g High Precision Scientific Electronic Digital Laboratory Lab Weight Analytical Balance Scale .01g Accuracy Jewelry Pharmacy Chemistry Industria Calibrated Gram Scale

Great scale for a science project!

Good quality

Great and reliable scale for the money.

Good accuracy and repeatability. Easy calibration. One feature I never thought of having is the counting mode. Place 10, 20, 50, or 100 items that need to be counted in a container on the scale that has been tared, press the count mode, and when the number matching the number in the container shows up, press the button again. With 20 items in the container and 20 showing on the screen, you're set. Take one item at a time out and the scale will reflect the correct number on the screen. Counting nuts, bolts, washers, beads, buttons (so long as they are identical), beans, nails, whatever. Makes counting bulk items into smaller containers a breeze.

This scale does not have reverse polarity protection for the backup battery. The first unit I received had the connector wired backwards. Connecting the battery fried the internal voltage regulators instantly. BE CAREFUL TO MAKE SURE THAT THE BATTERY CONNECTOR IN THE SCALE IS WIRED CORRECTLY!UPDATE 2024-Sep-03: The manufacturer was VERY helpful at getting a replacement scale to me. I have now ordered three (3) total units. We use the scale with the Serial Data output port connected to a Raspberry Pi, streaming data to a server instance on AWS. The scale monitors a physical process taking place of a slow weight increase event over a period of time. In our initial testing there does seem to be a small amount of drift when a load is left on the scale for hours, it amounts to 0.10-0.20 grams over an hour or two. It is possible that this is related to electronics warm up time, as is commonly understood in oscilloscopes.Compared to a similar top name scale brand which wanted 60x the price (Yes, sixty times the price!) for an equivalent unit this is more than sufficient for our needs.

The calibration weight has a hole drilled into it so little beads can be added to get it to weight exactly 500g. The little metal cap that holds those beads in popped out and they went spilling all over the ground so now I have no way of guaranteeing it still weighs exactly 500g.

HORRIBLE PRODUCT. TERRIBLE ! I AM SERIOUS. I AM SERIOUS BUYER AND USER.YOU CANNOT SWITCH THIS PRODUCT TO POUNDS AND OUNCES.WASTED 60 MINUTES MY VALUABLE TIME ATTEMPTING TO GET IT OUT OF GRAMS AND INTO OUNCES.THEY SO CHEAP THEY HAVE ONLY 4 BUTTONS AND THE BUTTONS ARE SUPPOSED TO SERVE MULTIPURPOSES BUT THEY DO NOT. THE BUTTON FOR "COUNT" is MIXED with supposed function to give you pounds and ounces BUT ONLY BADGERS YOU WITH COUNT. IT does STUPID "AUTO SCROLL" from 10, 20 and 50 count units. It is a display that moves from one topic to another on its own, flashing useless mystery information at you while refusing to give you necessary function such as switch from POUNDS TO OUNCES.I AM SERIOUS SCIENTIFIC USER, AFTER 60 MINUTES CANNOT GET IT TO CHANGE INTO POUNDS AND OUNCES. READ OWNER'S MANUAL CAREFULLY, IT IS FAR TOO SHORT AND IT SAYS NOTHING ABOUT POUNDS AND OUNCES. YOU WILL NEVERR GET IT TO READ POUNDS AND OUNCES AND IF I WASTE ONE WHOLE HOUR TRYING WHO NEEDS THIS, IT IS BAD DESIGN.WASTED MY WHOLE $ 130 I CANNOT USE IT. SO, WILL I RETURN IT ????? NO !!! IT WAS SITTING ON SHELF 3 MONTHS BEFORE UNBOXING AND NOW TOOO LATE TO RETURN IT. ALL MY MONEY WASTED. HA HA HA 4 BUTTONS TO DO 15 FEATURES ?? NOBODY EVERY FIGURE OUT HOW TO USE THIS JUNK. DO NOT BUY YOUR WASTING YOUR MONEY AND PRODUCT IS TOTALLY JUST AN IRRITANT. Have a nice day !

I have had all manner of scales for years, analog!! and of course various digital scales but the accuracy of those came to the fore when we started making our own pizza dough and a recipe no longer called for a tsp or 2 but 2.4g! I tried a couple of other cheaper scales with the 2 separate sections where 1 weighs heavier weights and the other weighs the small quantity but the quality just wasn't there in the units I bought. So I decided to try this scale. I really like that it has very bright, large and visible numbers. I particularly love that I can put on a bowl and set the scale to zero and then add a kilo of flour and then 2.4g of yeast and measure that with really solid accuracy and the change in weight is consistent and doesn't jump. I have 2 small complaints so far and that is the ugly massive logo on the side of the unit AND that I have to buy a special battery in order to use the unit without having it plugged in. Not big enough to drop a star but I'm probably at a 4.6 - 4.7 vs a full on 5. I have a battery on order for the unit and look forward to trying it with a little more mobility. Battery according to the website is "7.4V 2P lithium battery with XH2.54 2P Plug-in".