Extech ExStik Waterproof pH Pen Model PH100 3.20 X 8.15 X 11.20 Handles up to 500 cubic

Handles up to 500 cubic feet of living space

Time-lapse

S/N 3920XT13 TO S/N 3920XT20

Balanced Habitat Design: Supports baitfish protection and sportfish ambush zones in a single kit

Individual controls on base and each panel

Extech ExStik Waterproof pH Pen Model PH100 3.20 X 8.15 X 11.20 Handles up to 500 cubicExtech ExStik Waterproof pH Pen Model PH100 DESCRIPTION This multi application pH pen features a large, 3 1 2 digit digital display with a bar graph which fluctuates to show changes in a particular reading. Fifteen readings can be stored and recalled, and the last calibrated value is saved. The pen also displays temperature. Other features include data validation indicators that show the reading is stabilized, data hold for current reading, automatic