Merge branch 'ad-BSC' into 'develop'

ad-BSC

See merge request !553

external/lab-equipment/biosafety-cabinets/biosafety-cabinets.md

@@ -41,10 +41,10 @@ If you are not sure a BSC is the right hood to use for your experiment, please c
 
 <div align="center">
 <img src="img/image1.jpeg">
-<img src="img/image2.jpg" width="161" high="190">
+<img src="img/image2.jpeg" width="161" high="190">
 </div>
 
--   Be aware that **UV-lights act only on surfaces exposed to them**, the surfaces in the shadow are not disinfected and a chemical disinfection is still necessary after a UV decontamination.
+-   Be aware that **UV-lights act only on surfaces exposed to them**, the surfaces in the shadow are not disinfected and a chemical disinfection is still necessary after a UV decontamination. UV lights are damaging plastic material and gives a false feeling of disinfection while not being 100% efficient. Because of this, we do not recommend the usage of UV lights and advise to prefer the usage of disinfectant.
 
 -   The BSC must be **decontaminated before and after each use**. The interior surfaces should be wiped with an appropriate disinfectant that would kill any microorganisms that could be found in the cabinet. 70% ethanol is not effective against yeast and fungi, you should **use Bacillol 30 foam or tissues**.
 
@@ -73,7 +73,7 @@ Corrosive chemicals such as bleach should be avoided, but if used, should be fol
 
 -   Control the cells in the **microscope** before starting to work to **detect contamination** in your cell culture (change in the medium color, cloudiness of the medium, cross-contamination with other cell lines, ...).
 
--   Set up workspace in a direction **from clean to dirty**.
+-  Plan your work : set up workspace in a direction **from clean to dirty**.
 
 <div align="center">
 <img src="img/image7.png">
@@ -82,8 +82,9 @@ Corrosive chemicals such as bleach should be avoided, but if used, should be fol
 -   **Never cover the front or rear grids** with any material, even temporarily.
 
 -   **Avoid movement of materials or excessive movement of hands and arms** through the front access opening during use. After entering, allow the cabinet to stabilize before resuming work.
+- Work inside the BSC at a minimum distance of 15cm from the sash opening.
 
--   Take care **not pass** with your hands **over open bottles, flasks or tip boxes**.
+-   Take care **not pass** with your hands **over open bottles, lids, flasks or tip boxes**.
 
 -   When you open a flask or a medium, you can place the **lid with the opening up or down** on the bench, but make sure you put it **outside your working area**, at the back of the BSC so you do not pass over it with your hands or arms.
 
@@ -93,6 +94,12 @@ Corrosive chemicals such as bleach should be avoided, but if used, should be fol
 
 -   When work is completed, clear the workspace and clean the space with Ethanol 70% or with Bacillol 30. Please refer to the [Chemical and Biological Waste Management]({{ '/?lab:waste' | relative_url }}).
 
+- **Switch OFf the BioSafety Cabinet**
+Lower the glass and turn off the main Key-Switch.
+
+<div align="center">
+<img src="img/image8.jpeg">
+</div>
 
 ## UV lights