eclair vermorel sprayer

[19mac79]

Hi, I recently purchased a eclair vermorel sprayer and though it looks like examples in photos, obviously, period photos of these 'things' aren't very clear. Does anyone have any information on which types/models of sprayer where used by the British army? How can you tell if one of these things is a ww1 period eg or a 1920s plus eg?

Any clear pics of ww1 period sprayers would be appreciated.

If anyone has any other pics of anti-gas/ati-contamination items, ie delousing sprayers etc I'd be very interested to see these. i know this is a bit of an odd ball subject but....

Cheers

Andy