Reagents for HI 717 Checker HC ®, 40 Tests

Range 0.0 - 99.9 ppm NH3-N | Nessler Method | 0.1ppm resolution

Range 0:00 to 5:00 ppm | EPA Method 315 B | 0.01ppm resolution

Reagents for HI 755 Checker HC ®, 25 Tests

Range 0:00 to 2:50 ppm | ascorbic acid method | Resolution 0.01ppm