Research and Development

@article{Guidote2014,

title = {Low-Cost Magnetic Stirrer from Recycled Computer Parts with Optional Hot Plate},

author = {Armando M. Guidote Jr. and Giselle Mae M. Pacot and Paul M. Cabacungan},

url = {https://pubs.acs.org/doi/10.1021/ed500153r},

doi = {10.1021/ed500153r},

year  = {2014},

date = {2014-10-22},

journal = {Journal of Chemical Education},

volume = {99},

number = {1},

pages = {102-105},

abstract = {Magnetic stirrers and hot plates are key components of science laboratories. However, these are not readily available in many developing countries due to their high cost. This article describes the design of a low-cost magnetic stirrer with hot plate from recycled materials. Some of the materials used are neodymium magnets and CPU fans from discarded computers and recycled electrical components from old circuit boards. This prototype was compared with a commercial magnetic stirrer with hot plate. It was noted that high temperatures were reached at similar rates, and the stirring speed was also comparable between the two. With this prototype, which costs 80% less than commercials ones, magnetic stirrers with hot plate can be readily available to enhance teaching and learning in science laboratories that need them most.},

keywords = {first-year undergraduate/general, hands-on learning/manipulatives, high school/introductory chemistry, laboratory equipment/apparatus, laboratory instruction, public understanding/outreach},

pubstate = {published},

tppubtype = {article}

}

@article{LeeYu2014,

title = {Making a Low-Cost Soda Can Ethanol Burner for Out-of-Laboratory Flame Test Demonstrations and Experiments},

author = {Henson L. Lee Yu and Perfecto N. Domingo Jr. and Elliard Roswell S. Yanza and Armando M. Guidote Jr.},

url = {https://pubs.acs.org/doi/10.1021/ed500411v},

doi = {10.1021/ed500411v},

year  = {2014},

date = {2014-10-13},

journal = {Journal of Chemistry Education},

volume = {92},

number = {1},

pages = {127-128},

abstract = {This article demonstrates how to make a low-cost ethanol burner utilizing soda cans. It burns with a light blue flame suitable for out-of-laboratory flame test demonstrations where interference from a yellow flame needs to be avoided.},

keywords = {atomic properties/structure, demonstrations, hands-on learning/manipulatives, high school/introductory chemistry},

pubstate = {published},

tppubtype = {article}

}

@article{DeLeon2003,

title = {Solvent Extraction Using Safe and Commonly Available Materials To Demonstrate the Difference in Solubility of Two Mixed Solutes},

author = {Dante Gilbert L. De Leon and Armando M. Guidote Jr. and Fred Juergens and Ed Vitz},

url = {https://pubs.acs.org/doi/abs/10.1021/ed080p436},

doi = {10.1021/ed080p436},

year  = {2003},

date = {2003-04-01},

journal = {Journal of Chemistry Education},

volume = {80},

number = {4},

pages = {436},

abstract = {A blue, aqueous solution of copper(II) sulfate is mixed with a red ethanolic solution of sudan III forming a purple solution. This mixture is extracted with a nonpolar solvent, resulting in the separation of the red and blue compounds. The nonpolar solvent may be kerosene, vegetable oil, mineral oil, or hexanes. Notes on handling are included.},

keywords = {demonstrations, high school/introductory chemistry, solutions/solvents, tested demonstrations},

pubstate = {published},

tppubtype = {article}

}