Amino acid method ±1.0 ppm ±5% of reading accuracy Large, easy to read digits Auto shut off. Weighing a mere 64 g (2.25 oz.), the Checker HC easily fits into the palm of your hand or pocket Use for quick and accurate on the spot analysis Single button operation: zero and measure Operated by a single AAA battery. Designed to work with HANNA’s reagents Uses 10 mL glass cuvettes
