Quantity   Component name
1 × Arduino UNO / Redboard - $19.95 https://www.sparkfun.com/products/13975
1 × Ludus Protoshield - $14.95 https://www.sparkfun.com/products/13310
1 × Power Supply - 12VDC 600mA - $5.95 https://www.sparkfun.com/products/9442
2 × Jumper Wires M/M - 20 AWG (30 Pack) - $1.95 https://www.sparkfun.com/products/13870
2 × Alligator Test Leads - Multicolored (10 Pack) - $2.95 https://www.sparkfun.com/products/12978
2 × Electrodes (Aluminum $1.60 ea & Iron $1.50 ea) Aluminum - https://www.homesciencetools.com/aluminum-metal-electrode-4 Iron - https://www.homesciencetools.com/iron-metal-electrode-4
1 × 16 Oz Mason Jar (Set of 12) - $10.99 http://www.webstaurantstore.com/libbey-92103-glass-drinking-mason-jar-without-handle-12-case/55192103.html?utm_source=Google&utm_medium=cpc&utm_campaign=GoogleShopping&gclid=Cj0KEQjwuOHHBRDmvsHs8PukyIQBEiQAlEMW0F4RoZl1yDpX1dhyZQRZmWiccO5GzMdTVGXqyhu24YgaAgJF8P8HAQ
1 × 3D Printed Coagulator Lid