5" Big Blue Fit: Universal drop-in replacement for all standard Big Blue 20-inch filter housings — no adapters required

TDS Range: 0 – 8560 ppm (0

Wide operating temperature range (34°F to 145°F)

Multi-Scale EC Display — reads conductivity in EC

gradual adjustments without sudden pH swings that can stress aquatic life or damage equipment

Hanna Instruments Pool Line Free Chlorine Checker HC Reagents - HI7014-25 professional meter 5" Big Blue Fit: UniversalHI7014 25 Pool Line Free Chlorine Checker HC (Handheld Colorimeter) Reagents are high quality reagents for use with the HI7014 Pool Line Free Chlorine Checker HC. They are manufactured in our state of the art facility and clearly marked with the lot number and expiration date on each packet for traceability. Pre made reagents for ease of use Prepared with high purity chemicals Marked with expiration date and lot number for traceability HI7014 25 Pool