Biotic Index Data Sheet
Order Code: 5882-DATA-6
Water resistant data sheets for recording data after sorting and identifying freshwater aquatic macroinvertebrates to Order and some Families level. Includes instructions and formulas for calculating the Pollution Tolerance Index (PTI) Score and Pollution Tolerance Index Rating. Write on, wipe off and re-use. For field or indoor use. English and Spanish. Set of six.
