mixing gum arabic solution from chunks

phritz phantom · Jan 27, 2009

i just received my first order of raw gum arabic in chunks. i found recommendations for the solution from 33% to 100% solution. so, i figured, a 50% solution can't be wrong.
i put 50gr of ground up gum arabic in 100ml of distilled water. now the volume that comes out is 150ml, not 100ml. because of the gum.
is that a 50% or a 33% solution what i mixed there?

PhotoJim · Jan 27, 2009

That's 33 1/3%.

To make a given solution, you have to mix the chemical into less water than your target amount (about 60-65% in this case I suspect). Mix it up as well as you can, then add water to volume.

phritz phantom · Jan 27, 2009

ah, ok. i wasn't sure about that.
thanks, i thought 50ml of water would be to little. i'll try to work with the 33% solution for now.
thanks for the help.

Photo Engineer · Jan 27, 2009

And, you cannot make a 100% solution of any solid in a liquid.

PE

phritz phantom · Jan 27, 2009

yes, of course you're right, PE. the gram per 100ml lingo got me confused.

mixing gum arabic solution from chunks

phritz phantom

PhotoJim

phritz phantom

Photo Engineer

phritz phantom

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