Chemtrix Colorimeter

A general discussion and Q & A forum.
Post Reply
User avatar
J
Posts: 673
Joined: 13 Jun 2006, 10:00
Job Title: Lab Assistant
School: High
State/Location: NSW

Chemtrix Colorimeter

Post by J » 05 Apr 2019, 09:24

Hi to the Brains Trust.
Yes I'm back at my old school but that's a story for another day.

Can anyone help me with this colorimeter please?
I hope I have attached the photo properly.
I have followed the instructions a couple of times using fresh solutions each time but I cannot get it to read 100% transmission, so I don't even get as far as using the different dilutions.
I will try to attach the instructions in another post.

Thanks
J
You do not have the required permissions to view the files attached to this post.

User avatar
J
Posts: 673
Joined: 13 Jun 2006, 10:00
Job Title: Lab Assistant
School: High
State/Location: NSW

Re: Chemtrix Colorimeter

Post by J » 05 Apr 2019, 09:26

Here are the instructions.
J
You do not have the required permissions to view the files attached to this post.

bigmack
Posts: 358
Joined: 15 Dec 2015, 10:49
Job Title: Lab Assistant
State/Location: NSW

Re: Chemtrix Colorimeter

Post by bigmack » 08 Apr 2019, 09:24

Welcome back Julie. Bet they are very happy to have you back in Dorrigo .

Sorry don't have that same colorimeter but I was wondering if maybe your tubes have gone opaque with age ?
I noticed this in the instructions
NOTE
WHEN HANDLING CELLS AVOID FINGER MARKS ON THE LOWER PORTION OF THE CELL SINCE THIS
Will AFFECT THE LIGHT PATH.
If you completely remove the tube can you adjust for 100% ?

can you get 100% on any other wavelength .

Has a mudwasp crawled in and blocked up the light path ?

Its pretty simple inside , A beam of light shines through to a light sensor so unless there is something blocking the light path , it should work . If it all appears clean then its possible that there is a fault in the electronics

User avatar
J
Posts: 673
Joined: 13 Jun 2006, 10:00
Job Title: Lab Assistant
School: High
State/Location: NSW

Re: Chemtrix Colorimeter

Post by J » 09 Apr 2019, 09:28

Thanks, Richard. It's good to be back (most of the time).
I made sure the tube is totally clean and no blemishes but didn't think to check the light path. There is no mudwasp in there :crazy: and you can definitely see the light source but even with nothing in there I can't get 100%.
I'll give the surfaces a good clean and see if that helps.

bigmack
Posts: 358
Joined: 15 Dec 2015, 10:49
Job Title: Lab Assistant
State/Location: NSW

Re: Chemtrix Colorimeter

Post by bigmack » 09 Apr 2019, 09:58

good luck Julie . It's starting so sound like maybe the electronics has failed .

Only other thing that comes to mind is if its been dropped . You know how sometimes if a Voltmeter gets dropped , it won't read full scale anymore because the little springs at each end of the meter get tangled . You can pull the meter apart and often give the spring a little poke and a flick and it spings back to its right position .

User avatar
J
Posts: 673
Joined: 13 Jun 2006, 10:00
Job Title: Lab Assistant
School: High
State/Location: NSW

Re: Chemtrix Colorimeter

Post by J » 09 Apr 2019, 09:59

No luck :banghead2:
I removed the pack panel and cleaned inside and still nowhere even approaching 100%.
I think it's a dead duck. :redcard: :boring:

Post Reply