Dear labmates,
1) An inappropriate behaviour as a research student has been done by someone when setting up the temperature of the drying oven.
As you can see in the figures, the lids of the glass bottles had degenerated, also the spatula has blackened. This is because someone has setting the temperature up to 180 deg C which results in damages of the plastic lids and spatula.
2) Should someone wants to use the drying oven at high temperature (more than 120 deg C), he/she should take out the plastic labware from the oven. Please do so in order to avoid more damages on the labwares.
3) IMPORTANT: Please do some research for your chemicals and the instruments before you execute the experiment!