Update external/lab-equipment/utilization-of-bsc/utilization-of-bsc.md

external/lab-equipment/utilization-of-bsc/utilization-of-bsc.md

@@ -22,8 +22,11 @@ If you have any question regarding the usage of a BSC, please send a ticket to t
 
 -   The user must wear **lab coat** and **gloves** while using a BSC.
 
-<img src="img/image1.jpeg" width="40">
-<img src="img/image2-jpeg" width="40">
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+<img src="img/image1.jpeg">
+<img src="img/image2.jpg" width="161" high="190">
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 -   The BSC should be **empty** when you start working. If material is stored inside the BSC (for instance micropipettes), they must be disinfected when you switch on the BSC.
 
@@ -31,12 +34,16 @@ If you have any question regarding the usage of a BSC, please send a ticket to t
 
 -   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**.
 
+<div align="center">
 <img src="img/image3.jpeg">
 <img src="img/image4.jpeg">
+</div>
 
 Corrosive chemicals such as bleach should be avoided, but if used, should be followed with a wipe down of sterile water or 70% ethanol. Wipe the work surface, the inside walls, below the work surface and the collecting pan. Do not use non-sterile paper towels.
 
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 <img src="img/image5.png">
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 -   Allow the cabinet to run for at least **10 minutes** after switching on.
 
@@ -44,13 +51,17 @@ Corrosive chemicals such as bleach should be avoided, but if used, should be fol
 
 -   Put **Incidin PLU**S in **the aspiration pump** and disinfect the pump tubing with **Ethanol 70% or Bacillol 30**
 
-<img src="img/image6.jpeg">
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+<img src="img/image6.jpeg" width="166" high="267">
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 -   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**.
 
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 <img src="img/image7.png">
+</div>
 
 -   **Never cover the front or rear grills** with any material, even temporarily.