HANNA 781 Mini-Photometer Nitrate Checker (up to 50 mg/L with dilution)

Features :

• Range: 0.50 to 5.00 mg/L (NO3-N) 5.0 to 50.0 mg/L (calculated) with dilution
• Resolution: 0.01 mg/L 
• Accuracy: ±0.25 mg/L , ±2% of reading , ±2.5 mg/L , ±5% of calculated reading with dilution
• Method: colorimetric
• Light source: LED at 525 nm
• Light detector: silicon photocell
• Power supply: 1 x 1.5 V AAA battery
• Auto power off: after 10 minutes of non-use
• Dimensions: 86 x 61 x 37.5 mm
• Weight: 64 g