i have been looking for a easy way to dose daily to my tank, till i get another dosing pump. since measuring things out is a pain from the bottle... found this while in walgreens Walgreens*Oral Syringe | Walgreens the white part fits into your bottle. the syringe measures up to 10ml place the the syringe into the top of the white part, tip the bottle draw up 10ml.... than each day you pull the syringe out and dose the 1 or 2 or what ever ml you want to dose. place the syringe with left over fluid back into the top of the white holder. this creates a seal. and is ready to grab to dose again the next day. since you only dosed 1 or 2 ml it still holds the rest, so no tipping just grab the syringe and dose, than place back on the top of bottle till syringe is empty. when the syringe is empty after a few days of use, tip again fill syringe and repeat tip: wet the white part to get a good seal when inserting into the bottle the first time.