Using a graduated cylinder is an easy way to measure volume to ensure that they are both equal. I would avoid guestimating off the gauge on the bottle. My graduated cylinder measures in ml instead of fl.oz. so you may need to do a conversion.
1 fl.oz. = 29.562ml
Hooray! High school chemistry finally had a purpose and it only took me 14 years to find it...
1 fl.oz. = 29.562ml
Hooray! High school chemistry finally had a purpose and it only took me 14 years to find it...