Search found 7 matches

by Nat_ACT
02 Jun 2021, 10:16
Forum: Chemistry and Labware - General
Topic: Cleaning cuvettes
Replies: 4
Views: 3314

Re: Cleaning cuvettes

I used straight detergent, a couple of times then rinsed well and wiped our with a piece of microfibre cloth. Cleaned well, corners were tricky. I'll try napisan next time, just didn't have any on hand, will try that next time!
by Nat_ACT
30 Apr 2021, 14:40
Forum: Chemistry and Labware - General
Topic: Cleaning cuvettes
Replies: 4
Views: 3314

Cleaning cuvettes

A teacher has made an oil and water mixture and filtered it into a glass cuvette. I can't get it clean! I'd have thought that hot soapy water would work, but it hasn't done a thing and I'm wary of trying something else without advice in case I scratch it. I've never had to clean a cuvette - in my pr...
by Nat_ACT
29 Jan 2021, 14:04
Forum: Sourcing Materials & Eq Repairs
Topic: Cleaning Electrodes
Replies: 13
Views: 6542

Re: Cleaning Electrodes

Labbie wrote: 28 Jan 2021, 11:58 There are some very good tips in this thread, Nat, good luck
Thanks for that :D
by Nat_ACT
28 Jan 2021, 11:49
Forum: Chemistry and Labware - General
Topic: How can I clean volumetric flasks?
Replies: 15
Views: 7236

Re: How can I clean volumetric flasks?

CC wrote: 08 Jun 2017, 09:52Try some sand.
Thanks, the sand worked well.
by Nat_ACT
28 Jan 2021, 11:47
Forum: Sourcing Materials & Eq Repairs
Topic: Cleaning Electrodes
Replies: 13
Views: 6542

Clean Pb from Cu electrodes

I've got some Cu electrodes that were left in a beaker of water with Pb electrodes over the break. I've cleaned them up pretty well with carborundum paper but they could really do with more, especially around the bolts. I know I read on here about an easier way to do it but I can't find that again. ...
by Nat_ACT
30 May 2017, 12:50
Forum: Chemistry and Labware - General
Topic: How can I clean volumetric flasks?
Replies: 15
Views: 7236

How can I clean volumetric flasks?

Hi , I have 22 x 100ml and 250ml volumetric flasks that were used to see how yeast and sugar react to blow up a balloon. They were poorly rinsed by the students and now I can't get some residual yeast muck out of them :-( I have used detergent and hot water, shaken, soaked then shaken then rinsed - ...
by Nat_ACT
09 Feb 2017, 09:53
Forum: Safety with Chemicals
Topic: Shower testing frequency
Replies: 7
Views: 3548

Shower testing frequency

Hi,
Can someone please tell me how frequently I'm supposed to test the safety shower and eye wash?

I've been doing it weekly, as I was asked to, but it does seem to come around very quickly.
I feel all I do is test the shower and mop up!

Thanks :)