Gas Bottle weight

Hello.
Can anyone tell me the Empty Weight of a 3.9 Kg steel Calor Propane bottle?
Similarly the weight of a full bottle.
I exchanged bottles at a roadside garage but I was suspicious of the weight and asked for a different bottle and sure enough it was heavier, so I took it.
I have a suitcase spring scale which should do.
Someone told me the colour change strips are a waste of time.
Thanks.
Viv

The empty weight is stamped on the aluminium collar under the valve.

Peter Brown wrote:The empty weight is stamped on the aluminium collar under the valve.

Perversely the empty weight is marked on the collar in lbs  and ozs.  I seem to recall that it is also stamped on the collar around the base of the cylinder but I don't have a 3.9kg cylinder to check that.  I think that was in kg but not sure - and it won't be accurate if the valve assembly has ever been changed - bestto stick to the ally collar under the valve and do the conversion (divide by 2.2 is near enough to turn lbs into kg)

Vivienne Last wrote:
Someone told me the colour change strips are a waste of time.

I've used those strips.....and yes, in my opinion a waste of time and money!

PB

Hi, I have just weighed 3 full 3.9 bottles and they all weigh 9 kg.

Thanks for replies.
I've checked the aluminium collar and there are various figures on it.
One is 13.04 which if Lbs & Oz would seem to be 5.9 Kg. at 2.2Lbs to the Kg.
Doing the sums and using Mike's 9Kg full and subtracting 3.9Kg of gas, leaves 5.1 empty.
At variance with my 5.9Kg.
Not much I agree.
Any further comments/experience welcome.
Viv

Further to my last, has anyone experience of changing to the lightweight bottles, availability, fittings etc.
I heard there were problems with them.
Viv

Vivienne Last wrote:Further to my last, has anyone experience of changing to the lightweight bottles, availability, fittings etc.
I heard there were problems with them.
Viv

The Calorlite are 6Kg bottles and NOTICEABLY lighter to lug around than normal steel 6kg bottels. But they are more expensive to swap than steel 6Kg but less per Kg of gas than 3.9Kg bottles (I think).
I am VERY happy with them. They did have a recall but I would guess thatthey have all been rectified by now.  A Calorlite has been rectified if there is a small punched hole in the collar.  Also the recall only applied to cylinders made within a certain range of dates (see Calor website for details)

Thanks for responses.
I would like to know if the hose attachment for the 3.9 Kg is a direct fit to the lightweight one.
Viv

Yes, they do fit.     I took my old steel bottle to my local dealer and asked if they would exchange it for a calorite - no problem.    From memory, there was a small surcharge.    There is a big difference for ease of handling and they have a reasonably accurate gauge on  them.  
Cheers