Borden Resin UL-39, not sure of hardener ratio

[flanajb]

I was given 5 litres of Borden Resin UL-39 and Borden UH-21 Fast powder hardener. I am reading the data sheet and I don't understand the mixing ratio.

On the hardener data sheet it states 20 parts of hardener per 100 parts resin. Now the resin is a liquid and the hardener is a powder. So whilst I understand it is a 5:1 ratio, I don't get whether it is volume or weight.

Anyone familiar with this stuff who can help ?

Thanks

 

[9fingers]

A couple of mins googling threw up this http://www.hallmarkfraulo.co.uk/faqs

which says weigh the powder.

Bob

 

[flanajb]

A couple of mins googling threw up this http://www.hallmarkfraulo.co.uk/faqs

which says weigh the powder.

Bob

Thanks Bob