Differences

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--- afm:safety_and_lab_regulations [2017/01/12 15:17] – [Chemicals] galli
+++ afm:safety_and_lab_regulations [2023/11/22 15:58] (current) – [High voltages] galli
@@ Line 24: / Line 24: @@
   * Rule number ZERO is: if you don't know, ASK. Failing to ask something critical may result in expensive equipment damage but also waist your time.
   * Scanning Probe Techniques are sensitive to acoustic and mechanical vibrations: do not shout loud, do not make excessive noise, do not jump and smash doors in the SPM Lab.
-  * Scanning Probe Microscopes (all the parts, heads, tip, sample mounts etc) are sensitive to dirt, organic and powder contamination. Try to use POWDER FREE GLOVES as much as possible when handling all these parts, including when mounting sample and tip.
+  * Scanning Probe Microscopes (all the parts, heads, tip, sample mounts etc) are sensitive to dirt, organic and powder contamination. Try to use POWDER FREE GLOVES as much as possible when handling all these parts, including when mounting sample and tip. Or otherwise clean your hands well before using the equipment.
   * Keep the lab tables tidy and clean!
-  * Fill in the common LOGBOOK EVERY TIME you measure.
+  * Fill in the common LOGBOOK (electronic sheet on the desktop) EVERY TIME you measure.
   * You experience a problem with a setup? Contact laboratory staff asap.
   * You see that some stock (tips, gloves, tissues etc) is running out? Order new a.s.a.p. or [[afm:about|ask someone to do it]] for you.
-  * Done with a measurement? Retract the tip, set X,Y,Z high voltage to ZERO (Scan size, Offsets=0) at the Door AFM. Remove sample and tip holder. Close the door of the sound box.
+  * Done with a measurement? Remove sample and tip holder. Close the door of the sound box.
   * Remove all your sample boxes and basic tools from the tables of the SPM Lab when you are done with your measurements.
-  * If you use the SPM Lab regularly, you are supposed to attend the SPM Lab user meetings (announced by email) on regular basis.
   * SPM lab staff will NOT make regular backups of your data - we only backup the operating systems.
   * Users are obliged to acknowledge the SPM Lab in the publications with the following sentence: "AFM measurements were performed in the AFM Facility of the Leiden Institute of Physics (LION)".
@@ Line 50: / Line 49: @@
+===== Biological samples =====
+Some biological samples (like human tissues) require special procedures. The LION SPM Lab is NOT a MLx laboratory! It is not allowed to bring biological hazards in the AFM lab.
+There are procedures that can enable you to carry out experiments on biological samples/human tissues in the SPM Lab in a proper and non-dangerous way. You are obliged to contact laboratory staff (<galli@physics.leidenuniv.nl>) before carrying out experiments on biological samples. We can instruct you on how to perform your experiments safely.
@@ Line 61: / Line 62: @@
 It is NOT ALLOWED to use chemicals in the SPM Lab apart from the provided ethanol, acetone, isopropyl alchool and demi-water.\\
-Extensive sample preparations should NOT take place in the SPM Lab.\\
+Extensive sample preparations should NOT take place in the SPM Lab. We have both clean room and chemical labs close by. Please contact laboratory staff for their use.\\
@@ Line 79: / Line 80: @@
 ==== Inorganic chemicals ====
-Use demi water for making etch chemicals, NEVER normal water! Demi water is a chemical, do not drink it (it depletes you of minerals).
+Do not drink demi water. It depletes you of minerals and can be lethal.
 === Acids ===
-When working with acids, always wear gloves and work behind the glass of the downflow bench / fume hood or wear safety glasses (available in the 'magazijn'. If you work with HF **be extremely careful**. HF is not a very strong acid but it is exceptionally destructive. A small area of the body covered with HF is lethal. The only way to neutralize HF is with Ca, it is obligatory to have Ca pills or creme close when you use HF. Be careful when disposing strong acids, strong exothermal reactions can occur upon mixing with other chemicals.
+IT IS NOT ALLOWED TO WORK WITH STRONG ACIDS IN THE SPM LAB.\\
+AN EXCEPTION is done for Electrochemistry SPM experiments. People who plan to perform these experiments should contact laboratory staff (<galli@physics.leidenuniv.nl>) before starting!
+When working with acids, always wear gloves and safety glasses. If you work with HF **be extremely careful**. HF is not a very strong acid but it is exceptionally destructive. A small area of the body covered with HF is lethal. The only way to neutralize HF is with Ca, it is obligatory to have Ca pills or creme close when you use HF. Be careful when disposing strong acids, strong exothermal reactions can occur upon mixing with other chemicals. It is NOT ALLOWED to dispose acids in the SPM Lab! These they should be returned to your laboratory.
 === Bases ===
-Safety glasses are mandatory! Always! Wear gloves as well. Be careful when disposing strong bases, strong exothermal reactions can occur upon mixing with other chemicals.
+IT IS NOT ALLOWED TO WORK WITH STRONG BASES IN THE SPM LAB.\\
+AN EXCEPTION is done for Electrochemistry SPM experiments. People who plan to perform these experiments should contact laboratory staff (<galli@physics.leidenuniv.nl>) before starting!
+Safety glasses are mandatory! Always! Wear gloves as well. Be careful when disposing strong bases, strong exothermal reactions can occur upon mixing with other chemicals. It is NOT ALLOWED to dispose bases in the SPM Lab! These they should be returned to your laboratory.
@@ Line 109: / Line 120: @@
 ===== High voltages =====
 Many systems work with very high voltages, and in some cases HV power supplies can deliver significant current (several amps).
-The systems are equipped with protection circuits but these can never cover all possibilities, so when you disconnect power supply cables to connect them to a different sputtering source for example or when you open vacuum systems be //very careful// that the mains are switched off.
+Never open the electrical equipment in use in the AFM Lab. This is done exclusively by the lab manager.
 Also be careful with water leaks in electrical systems and with jewelery (a necklace can dangle through the ventilation slits of an electric box and is therefore not allowed).
+If you are planning to use electrical equipment with the microscopes that is not available already in the lab, this should be either CE certified or built in our Electronic Department.