the container that they come in is small but has a tight lid so the strips won’t fall out or get contaminated. They worked well for my fresh water tank #rank-boosterreview #sponsored #luffypetcollection SunGrow Betta pH Test Strips - Just dip & read: Ensure Maximum comfort for fish & invertebrates: No complicated setup required https://www.amazon.ca/dp/B06X91SDM6/ref=cm_sw_r_cp_api_uZ3IAbAB06214