Search found 74 matches

by Marama T
09 Mar 2021, 07:04
Forum: Sourcing Materials & Eq Repairs
Topic: Sourcing of frozen cane toads
Replies: 14
Views: 898

Re: Sourcing of frozen cane toads

You lucky thing - I love frogs too. Fortunately for me, I see a lot of frogs around here. Gorgeous!!
by Marama T
25 Feb 2021, 05:43
Forum: Sourcing Materials & Eq Repairs
Topic: Sourcing of frozen cane toads
Replies: 14
Views: 898

Re: Sourcing of frozen cane toads

I live in the Northern Rivers NSW, and we're inundated with the bloody things. Catch them in a trap (half-full bucket of water) or by hand, put them in the fridge overnight to send them into aestivation then whack them in the freezer to kill them. My record is 20 in one night, which just shows what ...
by Marama T
10 Feb 2021, 08:26
Forum: Chemistry and Labware - General
Topic: 0.0001M HCI
Replies: 3
Views: 422

Re: 0.0001M HCI

by Marama T
10 Feb 2021, 06:18
Forum: Chemistry and Labware - General
Topic: 0.0001M HCI
Replies: 3
Views: 422

Re: 0.0001M HCI

No is the short answer. 0.0001M HCl is a much more dilute concentration than 0.1M. How much do you need to end up with? I'll do the calculations and let you know. For example, if you need 100mL of 0.0001M HCL, take 1mL of 0.1M HCl and add to 9mL distilled water to create 10mL of 0.01M HCl. Do this t...
by Marama T
02 Feb 2021, 09:12
Forum: Chemistry and Labware - General
Topic: How can I clean volumetric flasks?
Replies: 15
Views: 3802

Re: How can I clean volumetric flasks?

Yeah swish it around quite forcefully. Sugar also works (it doesn't dissolve in the metho and the sharp edges abrade the residue).
by Marama T
02 Feb 2021, 06:32
Forum: Chemistry and Labware - General
Topic: How can I clean volumetric flasks?
Replies: 15
Views: 3802

Re: How can I clean volumetric flasks?

Sand and metho. Or dishwashing powder (for dishwashers) and vinegar.
by Marama T
11 Nov 2020, 11:39
Forum: Sourcing Materials & Eq Repairs
Topic: Trolleys
Replies: 2
Views: 496

Re: Trolleys

Wow, that's great. Shows it's wise to shop around.
by Marama T
10 Nov 2020, 11:06
Forum: The Lab Tech Position
Topic: How do I describe what I do?
Replies: 49
Views: 17363

Re: How do I describe what I do?

Make sure you write down a big chunk of time for "doing pointless stuff requested by the principal".
by Marama T
10 Nov 2020, 10:55
Forum: Forum Support Desk
Topic: Photo files too big for chemtalk
Replies: 8
Views: 1209

Re: Photo files too big for chemtalk

I'm still getting the "file too large" error message too...
by Marama T
05 Nov 2020, 11:22
Forum: Forum Support Desk
Topic: Photo files too big for chemtalk
Replies: 8
Views: 1209

Photo files too big for chemtalk

Hi there. Photos from my iPhone SE 2020 are "too big" to be posted to this site. Can this be fixed?
by Marama T
05 Nov 2020, 10:27
Forum: The Lab Tech Position
Topic: Science Assistant Training
Replies: 9
Views: 5847

Re: Science Assistant Training

Do you have access to RiskAssess regarding chemical disposal? If not, don't put mercury, cobalt, copper, lead, or zinc compounds down the sink. Also keep for specialist disposal chromate/dichromate and fluoride compounds and all halogenated and non-halogenated organic chemicals. Keep them in separat...
by Marama T
04 Aug 2020, 12:52
Forum: Recipes and Pracs
Topic: iron standard solutions
Replies: 6
Views: 1323

Re: iron standard solutions

Oh yes! My mistake. It should be 0.0050 x 5, not 500. Thank you, Wayne. That'll teach me for doing calculations first thing in the morning.
by Marama T
04 Aug 2020, 08:02
Forum: Recipes and Pracs
Topic: iron standard solutions
Replies: 6
Views: 1323

Re: iron standard solutions

Hi Kathryn. I think you work this out as follows. I will assume the percentage is weight of solute/weight of solution. Start with your desired volume of solution. If you need 500mL of each, for example, each solution will weigh 500g. Then multiply the weight of the solution by the percentage require...
by Marama T
22 Jul 2020, 08:30
Forum: Biology, Physics...
Topic: sterilising and stench
Replies: 6
Views: 1957

Re: sterilising and stench

Hi Beaker. This is normal. When I sterilise agar plates in the pressure cooker, I don't use a bag and the plates turn into a sodden, twisted mass of plastic and melted agar, and I've never experienced issues with getting gunk through the cooker valves. (Love your name, by the way. I used to watch th...
by Marama T
02 Jul 2020, 12:04
Forum: Sourcing Materials & Eq Repairs
Topic: Plastic trays
Replies: 9
Views: 2142

Re: Plastic trays

Link to some photography trays (Australian company too) https://www.photoresource.com.au/DARKRO ... s/2210.htm
by Marama T
25 Jun 2020, 12:51
Forum: Recipes and Pracs
Topic: Potassium Iodide
Replies: 6
Views: 1655

Re: Potassium Iodide

Hi Helen. I've got saturated KI in the chem store, which is quite yellow, and some 1M, which is clear. So your 2M stuff should probably be clear.
by Marama T
24 Jun 2020, 09:39
Forum: Chemistry and Labware - General
Topic: Cleaning carbon rods
Replies: 5
Views: 2007

Re: Cleaning carbon rods

Ha! Brilliant, bigmack. I knew there had to be a way.
by Marama T
24 Jun 2020, 09:17
Forum: Biology, Physics...
Topic: Safe disposal of Pasteur's experiment flasks
Replies: 2
Views: 1290

Re: Safe disposal of Pasteur's experiment flasks

That's excellent, bigmack, THANKS!