Building a Low-Cost Semimicro Balance

Canada Wide Science Fair
6 September 2013

Mac WongI am Mac Wong, a Grade 7 student at Grant Park High School in Winnipeg. I am taking Grade 5 piano and expect to write my RCM exam this fall. I also like playing badminton. I believe we live in a throw-away society where products are thrown away instead of being sold, repaired, or repurposed. To do my part for the environment, I used as many recycled parts as I could in my project. - See more at:

Analytical and micro balances are very expensive and thus beyond the reach of the average person. An analog galvanometer and a low-cost multimeter can be used to construct an analytical balance for under $100. Use of a precision multimeter can result in a semimicro balance with an estimated resolution of 2 micrograms.

Winner of the Excellence Award - Gold Medal (Junior) at the Canada Wide Science Fair 2013

Canada Wide Science Fair

The Canada-Wide Science Fair (CWSF®) is a national event that brings together 500 top young scientists (in grades 7-12/Cégep) from across the country to compete for highly prized cash, scholarship, and science experience awards.

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