Model AM-22 Refill

Model AM-22 Refill Allows You Continuous Use of Your Water Pollution Kit

Model AM-22 Refill contains 50 tests (nitrate-nitrogen contains 40 tests), manual, report forms and handbooks: “A Study of Water Quality,” “Our Environment Battles Water Pollution,” and “Investigating Water Problems.” For use with Model AM-22 Water Pollution Kit (No. 221540).