HI7041x Refilling Solution for Polarographic Probe

Range 0 - 150 ppm | ferrous sulfate method | Resolution 1ppm

Range 0:00 to 3:00 ppm NH3-N | Nessler Method | 0.01ppm resolution

Range 0-999 ppb | ASTM Method D1687-92 diphenylcarbonate | Resolution 1 ppb