With the Hanna Low Range Phosphate Colorimeter Checker, you won't have to worry about the subjectivity of color charts. The Hanna colorimeter eliminates the effort of matching to a color chart by delivering a direct phosphate result digitally.

It comes with the reagent. You can buy more Low Range Phosphate Colorimeter Checker Reagent.

• Includes: 1x Hanna HI713 Checker; 2x Testing Cuvettes; 6x HI713 Reagents; 1x Instruction Card
• Range: 0.00 to 2.50 ppm (mg/L). Resolution: 0.01 ppm (mg/L). Precision: ±0.04 ppm (mg/L) ±4% of reading @ 25°C
• Battery - 1.5V AAA (included)
• Auto-Off - After 10 minutes of non-use
• Dimensions - 3.2" x 2.4" x 1.5"
• Simple, one-button operation makes getting your phosphate results a snap.
• Quickly get your results without using a color chart.
• Compatible with fresh or saltwater.

Note: We can not ship this Test Kit expedited or to Hawaii, Alaska or Puerto Rico