Australia's Science Forum

Hi I put in a good squirt of 6M sulfuric acid, and rinse well with distilled water after. MariaC

PS make sure the acid has mixed well in the water or nothing happens for ages.....

A new CSIS, Ive been hearing that for years! Can it really be that hard, most of it is fine, its only the chemicals that have changed class, and new GHS storage rules that need up dating.

MariaC

Our data harvest bought new approx two years ago, never worked on battery always had to be plugged into mains, finally got Serrata to agree it wasn't right, but have been waiting over six months for repair!! At least Serrata have lent me one whilst ours is MIA, still in the UK we believe. Im also lo...

I still get mine from the butcher, I have to order ahead but they still cost $5- per eye as they have to pay a guy just to come in and remove the eyes at the abattoir. MariaC

Chemwatch IS the problem! LOL
MariaC

Should it really be this hard??????

MariaC

Hi Guys, Looking at a GOnDO meter, does combined pH, conductivity, TDS, temp, salinity and sells for around $200 Has anyone had any experience with these? feedback sought before purchase!

MariaC

Good to hear from you smiley! remember its the system not us that was rude! Hope you are traveling well. MariaC

My understanding is we have to have one on every door that may be used to access the room the laser is being used in, MariaC

Ive never had problems with this prac, is your agar old? and do you use a thermometer to check the temp when it boils? I wait til mine gets to around 96 degrees, keeping a lid over it whilst stirring helps otherwise it takes forever to really get hot. Also make sure it is cool enough before adding N...

Hi All,

We have two dishwashers, SORRY! Our Bosch is only a year old and has broken already, and guess what no spare parts in Australia so not recommended! I have big red signs on mine that say no crockery, Ive tried to add but not sure how to do so fingers crossed!
MariaC

Thanks Dime! So the tubes were the same size? Do you know what brand the old one was, ours is VERY OLD a Kagaku kyorisha, did you get the new one from serrata?

Cheers MariaC

Hi Guys,
Our vacuum scale stand is missing its first tube, 0.03mg Hg does any one know off a supplier who sells the tubes individually? Ta muchly MariaC

Love it!

MariaC

:D Hi All, I've looked at lots of posts on this site re fume cupboard testing, but am wondering does anyone out there have the standards relevant to this, and has anyone actually seen that this has to be done yearly in a school setting? We have three cupboards, service $870- plus GST, one has never ...

:D Hi Guys, when you do this prac do you weigh the flask before and after fermentation to record loss due to CO2? We try this every year and the mass always increases :crazy: not sure why, maybe the limewater gets refluxed up the tube when we take it off the heat and it all cools down. Any tips/ suc...

Thanks everyone, its the old ones we want, I'll see what I can find! MariaC

Hi just wondering if any one has purchased aluminum pulleys lately, we want to but they all seem to be plastic. Any ideas?

MariaC

Thanks for all the replies! I didn't think the desiccator would work with that amount of fluid but Ill give it a try and let you know the results MariaC

:w00t: Hi Guys, Has anyone had any success in drying out chemicals such as Magnesium nitrate that have deliquescent ie absorbed moisture to the point of being liquid :crazy: I must have a very damp storeroom, and have a number of chemicals that making any solution of known concentration is impossibl...