Hydrogen peroxide storage: I have stored H2O2 in the fridge in the Chem Prep room for years but recently I have been part of discussions that say this should never be the case, it should be stored in the 5.1 cupboard.
This is not exactly a cool place, as the SDS suggests, so I'm confused as to what to do.
Bacteria in yoghurt: Are yoghurt strains of bacteria suitable for use in schools? Are they safe to use in the biology practical “What causes Yogurtness”?
Barium nitrate solutions: Is a 0.1M solution of barium nitrate permissible for years 7-10 in NSW Department of Education Schools? It is not clear in the CSIS chemical search. What percentage is a 1M solution of barium nitrate and is it a saturated solution? Can I make up a 0.5M solution of barium nitrate?
Decommissioning a science area: Our school is building a new science area and will be decommissioning the existing science rooms. What advice can you provide on this process please?
Potassium iodide status and EUDs: Can you confirm whether potassium iodide is allowed in WA schools and can you explain what an EUD is?
Disposing of wire gauze mats with ceramic centres: I have some of these and have checked with the supplier in relation to the possiblity of containing Tremolite. I have obtained a report from the supplier stating that their mats do not contain Tremolite but at this time there are no accredited NATA procedure to test for Tremolite by scanning electron mirosope.
Consequently we would like to dispose of ours and was wondering what the best way is ?
I have bagged them and placed them in the chem store. I hope that you can offer some advice.
Phenanthroline: My Chemistry teacher would like to use Phenanthroline for senior chemistry EEI’s. The MSDS lists this chemical as Acute hazard category 1, and Acute toxicity oral category 3. Could you tell me if this chemical is ok to use in schools?
Laboratory technician office location: Can anyone help? I'm trying to find out if there are any reg's regarding office space for lab techs and whether lab techs can be "housed" in the prep room where chemicals are stored. Should a laboratory technician’s office space be in the preparation room?
Storage of offal: Is it acceptable to store offal, such as plucks, hearts, kidneys, etc., in a freezer for long periods (months) for future use? If so, and the freezer is located in a prep room (i.e. not accessible by students and used only for science purposes) is there any requirement to have this locked?
Authored 2017-03-06
GHS Hazard category ratings: Can some one please explain the rating on the chemicals in the SDS please? For example the Hydrochloric Acid 25 - 36% Hazard Identification : skin corrosion/irritation: category 1B, for Specific Target Organ Toxicity Single Exposure: category 3 and Corrosive to Metals: category 1.
Is the lower number less of a hazard or more of a hazard?
