What is this tube for?

[eldar]

What is this fo. ? Looks like a glass tube with a cap on one end, and has a council sticker on it.

Clipped to a bit of wood, and cable tied to a road sign. Appeared about 5 days ago, seems to be the only one.

No cables or other equipment...

[hogfisch]

Looks like a diffusion tube to me. Typically used to sample atmospheric NO2 pollution (although from a data quality perspective, they are usually deployed at least in duplicate)

[Spare tyre]

Pollution survey type thing

Kidnap it and take it to the alps, that’ll learn them

[eldar]

hogfisch said:

Looks like a diffusion tube to me. Typically used to sample atmospheric NO2 pollution (although from a data quality perspective, they are usually deployed at least in duplicate)

Genius, thanks. Exactly what it is. There are another couple, apparently.

Probably due to a mega warehouse/road/rail interchange is built a mile or so away.

[ApOrbital]

Mumsnet beaker.

[gazza285]

ApOrbital said:

Mumsnet beaker.

I’d forgotten all about that...

[PBCD]

eldar said:

...has a council sticker on it.

cable tying tubes to road signs: council.

[talksthetorque]

It's a PH neck strainer.

Here you go.

[eldar]

Thanks. It started up the in the correct orientation, then tripped over somewhere.