HI7041x Refilling Solution for Polarographic Probe

Range 0:00 to 7:00 g / L | Photometric Method | Resolution 0.01g / L

Range 0:00 to 3:50 ppm | USEPA Method 330.5 / DPD | Resolution 0.01ppm

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