This is a great value for beginners.
https://www.amazon.com/General-Hydroponics-Pipettes-Measuring-hydroponic/dp/B07DKG8PM2/ref=sr_1_fkmr1_1?ie=UTF8&qid=1539720970&sr=8-1-fkmr1&keywords=General+Hydroponics++PH+up+powder?tag=greenrel-20