1️⃣💧/🌊

#parts per million #dilution #ratio #proportion #one in a million #trace amount #water quality

🤏/🌍

#parts per billion #trace amount #tiny fraction #ratio #billionth

••🤏

#specks #small points #abstract bits #minimal pieces #particles #trace amount

✨%

#speck of percent #barely there #insignificant amount #poucent #trace amount #minimal presence

🧪🫖

#chemical residue #precipitate #lab remains #experiment leftovers #trace amount #scientific sediment