APERA TN400 Turbidity Meter Measuring Method ISO 7027 compliant nephelometric Method（90°）

APERA pH20 Tester Kit Measuring range -0.0 to 14.00 pH Resolution 0.1 pH Relative accuracy ±0.1 Points of calibration 1-3 pts

APERA EC20 Conductivity Tester Kit Conductivity measuring range 0…2000µS – 0…20mS Resolution Automatic scale Relative accuracy ±1 % F.S.

APERA TDS20 Tester Kit Points of calibration1-2 pts Measuring range 0-100.0ppm 0-1000ppm 0-10.00ppt Resolution 0.1/1ppm 0.01ppt Relative accuracy ±1 % F.

APERA Salt20 Salinity Tester Kit Points of calibration1 pt Measuring range 0-10.00 ppt Resolution 0.01 ppt Relative accuracy ±1 % F.S.

APERA pH60 Tester Kit pH measuring range -2.00 to 16.00 pH Resolution 0.01 Relative accuracy ±0.01 Points of calibration 1…3

APERA pH60S Tester Kit (with Spear sensor) pH measuring range -2.00 to 16.00 pH Resolution 0.01 Relative accuracy ±0.01 Points of calibration 1…3

APERA EC60 Conductivity Tester Kit Conductivity measuring range 0…200µS- 0…2000µS- 0…20mS Resolution Automatic scale

APERA PC60 Tester Kit (Multi-parameters: pH Conductivity TDS Salinity Temp) Conductivity measuring range 0…200µS- 0…2000µS- 0…20mS

APERA Optical DO850 meter (Dissolved Oxygen) Measuring Range 0-200%; 0-20.0mg/L Resolution 1% 0.1mg/L (ppm)

APERA PC8500 Handheld Kit (Multi-parameters: pH Conductivity TDS Salinity Temp) pH Range (-2.00 ~ 16.00) pH Resolution 0.1/0.01 pH Accuracy ?0.01 pH ?1 digit Temperature compensation (0 ~ 100) ?C (manual or automatic)

APERA PH850 Handheld Kit pHRange (0.00~14.00) pH Resolution 0.1/0.01 pH Accuracy 0.01 pH ?1 digit Temperature compensation (0~100)C (manual or automati