Sometimes there are two that need to be mixed together. Yes you will need an empty ampule that holds 10ml. You will break one open and with a syringe add biostatic water which will dissolve the powder, then draw it back up into the syringe and insert into the empty ampule. Continue to add biostatic water until you have the 10ml and you are done.
Make sure you put another needle in the ampule for air to escape as you are filling it up.

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