Search found 225 matches

by remlap12
30 Jul 2020, 12:32
Forum: Recipes and Pracs
Topic: Melting Phenolphthalein Agar
Replies: 7
Views: 599

Re: Melting Phenolphthalein Agar

thanks kimmy, that one has gone into my recipe book too!!
by remlap12
21 Jul 2020, 13:10
Forum: Recipes and Pracs
Topic: Melting Phenolphthalein Agar
Replies: 7
Views: 599

Re: Melting Phenolphthalein Agar

shellythenewlabby wrote:
21 Jul 2020, 12:57
mtg wrote:
21 Jul 2020, 11:32
Good to know. What strength Phenolphthalein did you use and how much? I find it's so hard to get the right colour so it doesn't fade. usually make it too pink.
I usually use the crystals and it works well
I'll try that next time! 8-)
by remlap12
21 Jul 2020, 12:53
Forum: Recipes and Pracs
Topic: Melting Phenolphthalein Agar
Replies: 7
Views: 599

Re: Melting Phenolphthalein Agar

Good to know. What strength Phenolphthalein did you use and how much? I find it's so hard to get the right colour so it doesn't fade. usually make it too pink. I actually can't tell you the strength, the bottle I have here was made up prior to me being here! It's almost gone now......time to make u...
by remlap12
29 Jun 2020, 09:47
Forum: Recipes and Pracs
Topic: Potassium Iodide
Replies: 6
Views: 412

Re: Potassium Iodide

Thanks for the replies, everyone!
by remlap12
25 Jun 2020, 13:29
Forum: Recipes and Pracs
Topic: Potassium Iodide
Replies: 6
Views: 412

Re: Potassium Iodide

Thanks Marama T :D
by remlap12
25 Jun 2020, 12:17
Forum: Recipes and Pracs
Topic: Potassium Iodide
Replies: 6
Views: 412

Potassium Iodide

Hi all, I have a question about the colour of Potassium Iodide. I have a small amount in a bottle, made up some time ago, that is a strong yellow colour. I needed to make some up today, it is clear. The older solution says saturated, the one I made today is 2M. What colour should it be ??? TIA Helen.
by remlap12
16 Jun 2020, 14:15
Forum: Recipes and Pracs
Topic: Melting Phenolphthalein Agar
Replies: 7
Views: 599

Melting Phenolphthalein Agar

Hi all, Has anyone melted their already set / pre used phenolphthalein agar and then reset it? I did, for the first time today.................I did learn a lesson! I thought slow heat on the hot plate would be the best option.....WRONG!! :redcard: After a long time, with not much happening, I then ...
by remlap12
13 May 2020, 13:29
Forum: Forum Support Desk
Topic: Accessing Chemtalk
Replies: 2
Views: 1115

Re: Accessing Chemtalk

No Lyn, but I'll try that now :-)
by remlap12
13 May 2020, 10:38
Forum: Forum Support Desk
Topic: Accessing Chemtalk
Replies: 2
Views: 1115

Accessing Chemtalk

Hi all,

It's probably just my computer's problem..... but is anyone else having trouble getting on to this site through their favourites, or however else you normally log on?
I'm having to go through google each time?????

:? :rolleyes: :-?
by remlap12
19 Mar 2020, 08:36
Forum: Miscellaneous
Topic: Removing rubber stopper from small conical flask
Replies: 5
Views: 4033

Re: Removing rubber stopper from small conical flask

A while ago I had a rock stuck in a perfectly good measuring cylinder ( by a student )
I did try a few remedies, one was soaking it in an acid to try to eat away the rock..............but alas, I had to throw it out!
by remlap12
02 Mar 2020, 08:58
Forum: Sourcing Materials & Eq Repairs
Topic: Bovine eyes
Replies: 11
Views: 3353

Re: Bovine eyes

o.k. thanks Shell1!
by remlap12
27 Feb 2020, 13:32
Forum: Recipes and Pracs
Topic: Potassium Dichromate Indicator
Replies: 2
Views: 1721

Re: Potassium Dichromate Indicator

Thanks Merilyn!
by remlap12
27 Feb 2020, 13:15
Forum: Recipes and Pracs
Topic: Potassium Dichromate Indicator
Replies: 2
Views: 1721

Potassium Dichromate Indicator

Hi all,
I've been asked for Potassium Dichromate Indicator for a salinity prac for Marine Studies.
It looks like nasty stuff..............should I make up a 0.1M solution for it?

TIA
by remlap12
24 Feb 2020, 11:43
Forum: Sourcing Materials & Eq Repairs
Topic: Bovine eyes
Replies: 11
Views: 3353

Re: Bovine eyes

wow bigmack! That's fantastic! I might have to do some further investigating, thanks!
by remlap12
20 Feb 2020, 11:03
Forum: Sourcing Materials & Eq Repairs
Topic: Bovine eyes
Replies: 11
Views: 3353

Re: Bovine eyes

I have tried a couple of butchers but I'm going to keep trying others, you never know..............