DIY gas chamber

RE: DIY gas chamber

Heather Bacon — Fri, 24 Jul 2020 09:48:08 GMT

Thank you, I am working in NZ at the moment. I would normally just buy one but can't seem to find one here with any of our equipment providers.

We see a lot of rats and birds. At the moment the vets just cover them with a large mask.....I figured a handmade gas chamber would be better than what they are currently doing

RE: DIY gas chamber

apache — Thu, 23 Jul 2020 23:03:02 GMT

JAK do one for £45. Buy that

RE: DIY gas chamber

Olivia Coulton — Thu, 23 Jul 2020 16:25:20 GMT

I wouldn't want to trust a hand made induction chamber without having iso monitors on to test how safe a handmade one is. You have to safeguard your colleagues and how do you know one is really safe unless you have tested it? I don't think induction chambers are actually that expensive so it would be worth investing in one plus with a handmade one can you really disinfect it properly without the materials perishing?

RE: DIY gas chamber

James Colver Cert. Ed, RVN — Thu, 23 Jul 2020 13:30:04 GMT

lol, my Grandma smoked 20 Lambert and Butlers a day and lived until she was 80 - never had any issues! Why do all of the commercially available induction chambers have an inlet and a larger diameter outlet..? Depending on the flow rate set by the person using it, FG enters the chamber at a faster rate than it can be scavenged - this is especially a concern with no active scavenge. We have a responsibility to minimise exposure to anaesthetic gases - if not for ourselves then for the people that we work with. In the olden days we used to soak some cotton wool in halothane, and put it in a container with a small furry. It worked. (Never had any issues!) ..but would this be acceptable practice now? The risks of WAG is mainly associated with chronic, long-term exposure (which explains why we never had any issues.. yet..) Veterinary practice has always been an industry where we have to make do, or be inventive - but for a Heath Robinson style induction chamber, here's an example of where we should do it properly or not at all.

RE: DIY gas chamber

Fiona Leathers — Wed, 22 Jul 2020 21:49:30 GMT

We used a large plastic sweetie jar (if you're old enough, you'll remember buying sweets by the quarter!) It has a hole in the lid with a blue ET connector glued onto it and the breathing system fits on as normal.

Works well, easy to wash & cheap as chips!

RE: DIY gas chamber

Emmacampbell — Wed, 22 Jul 2020 09:58:55 GMT

This is the same method we use. The t piece fits nice and snuggly into the bottle cap end. Never had any issues.

RE: DIY gas chamber

Emmacampbell — Wed, 22 Jul 2020 09:55:50 GMT

Yes , we do as that. Was just a quick description.

RE: DIY gas chamber

Emmacampbell — Wed, 22 Jul 2020 09:54:31 GMT

It works well, we used that method just the other day. Helpful for rats especially.

RE: DIY gas chamber

Sal the 1st — Tue, 21 Jul 2020 21:49:50 GMT

when using a trimmed down bottle I don't have a separate exhaust, I don't on our sandwich box type either - I just use a T piece as a circuit which is connected to the scavenger. If you use a portex endo tube connector make the hole in your sandwich box big enough to put the end that would normally fit in the tube through then from the inside of the box or bottle (ie making a hole through the bottle lid to put your connector through) push a rubber o ring onto the connector which will not only hold it in place but will provide a leak proof seal

RE: DIY gas chamber

James Colver Cert. Ed, RVN — Tue, 21 Jul 2020 19:53:21 GMT

See if you can find those connectors in the right size, it'll make the job much easier :) Also make sure that you flush it through thoroughly before you open the lid :)

RE: DIY gas chamber

Heather Bacon — Tue, 21 Jul 2020 19:49:02 GMT

Thank you, yes am going to be making an exhaust outlet too. I did wonder if it would make much difference if we only have passive scavenging at hand? But I guess it is currently better than the mask that a lot of the vets are using

I did think of drilling 2 holes and placing some sort of rubber seal/doughnut around the hole edges, then hopefully the circuit and scavenging ends would be able to squidge in nicely with no escaping gas?

RE: DIY gas chamber

James Colver Cert. Ed, RVN — Tue, 21 Jul 2020 17:17:16 GMT

Here you go - you need to find connectors like these, of correct diameter to suit circuit and scavenge (I recall having to sand around the inside of the connectors that I got to get a good tight push-fit) https://www.amazon.co.uk/VDL-PVC-383-1-Tank-Diameter-32/dp/B006SYKTH6/ref=sr_1_56?dchild=1&keywords=plastic+flange+connector&qid=1595351680&sr=8-56

RE: DIY gas chamber

James Colver Cert. Ed, RVN — Tue, 21 Jul 2020 17:07:55 GMT

I have made a few from tupperware containers and various connectors - importantly though, you MUST have an exhaust outlet (the bottle idea described doesn't sound like it does - there are all sorts of issues with this) and the exhaust outlet MUST have larger diameter than the fresh gas inlet.

RE: DIY gas chamber

Sal the 1st — Tue, 21 Jul 2020 14:01:48 GMT

lol - not as bad as the question I was asked by a work experience once ' whats the biggest body you have had in your freezer?' - I looked him up and down a couple of times and he skidaddled to go and annoy somebody else

RE: DIY gas chamber

Arlo Guthrie — Tue, 21 Jul 2020 11:45:39 GMT

There's a forum thread title to get people to read , Heather Bacon

RE: DIY gas chamber

Emmacampbell — Tue, 21 Jul 2020 10:20:49 GMT

We sometimes use a 2lt juice bottle. Cut the bottom off the end then turn the bottom the other way to use as a stopper once the animal is in . The top of the bottle can be attacthed to the circuit.