Cheap source for 3-way syringe taps?

[ffutures]

I need to build a class set of respirometer apparatus for A-level biology. Most of it is relatively straightforward, rubber bungs and capillary tubes etc, but I also need a lot of three-way syringe taps - basically, a little T-junction which allows you shut off one of the three arms. They used to be relatively cheap, I think about 25p the last time I wanted some, but I've only got a couple left and they are now £2.00 or more each from the licensed bandits we call educational laboratory suppliers. I'll need 30+ so if possible I want to get them cheap. Does anyone know of a source?

Comments

[slashaddict13.livejournal.com]

I didn't see anything like what you're looking for in a quick peruse but this might be a good source for future needs. I know you're in the UK and I don't know what shippng costs are like but they do have really good prices that might make up for it.

American Science & Surplus
http://www.sciplus.com/

[ffutures.livejournal.com]

Unfortunately they don't ship outside the USA, or didn't the last time I checked.