国产无av码在线观看,一区二区人妻精品无码a片,日韩精品色情av无码一区,国产成在线观看免费视频成本人,国产成在线观看免费视频成本人

TDS Meters

  • TDSscan10L Pocket TDS Tester

    Single-range pocket TDS tester, 1 point calibration, suitable for measuring total dissolved solids in pure water, range 0.5 to 100.0 ppm.

  • TDSscan10M Pocket TDS Tester

    Single-range pocket TDS tester, 1 point calibration, suitable for measuring total dissolved solids in clean water, range 5 to 1000 ppm.

  • TDSscan10H Pocket TDS Tester

    Single-range pocket TDS tester, 1 point calibration, suitable for measuring total dissolved solids in natural water, range 0.05 to 10.00 ppt.

  • TDSscan20 Pocket TDS Tester

    Multi-range pocket TDS tester, 1 to 3 points calibration, selectable TDS conversion factor, setup menu contains 5 options, range 0 to 20 ppt.