Beckman Group 1 tested the plate with 1:1, 2:1, 3:1, 4:1 ratios of iron to aluminum since they increased the amount of aluminum last time so they can compare the effects of increasing ratio of iron to aluminum to effects of increasing aluminum to iron. Group 2 tested their plate (BHS-2-71-B) which consisted of the Bismuth Nitrate solution and Iron standard solution. The ratios they used are 1:12, 1:15, 4:3, and 5:3. The results they gained were good as the range was from 3-5. They plan to make a replica of plate BHS-2-71-B to verify results. They did not test plate BHS-2-71-A which consisted of the standard Iron Nitrate and Bismuth solution with ratios of 1:1, 1:19, 1:18, and 2:1 because the spots were too small to be tested on after the plate was baked. Group 3 tried using HCl acid to dissolve the 0.04 M Bismuth solution but it failed to dissolve completely. They are using a hot plate in order to try dissolving the 0.04 M Bismuth solution. Lastly, Group 4 tested the plate that was UV treated for 10 minutes. It is part of their trials to determine if UV treatment longer than five minutes has benefits regarding the coffee ring effect and testing plates.
San Marino Blank Team made a new plate with varying ratios of Fe(NO3)2 and Zn(SO4). All of the Caltech SEAL kits are currently out for repairs, so no testing was possible this week. Hopefully they will be all fixed soon!