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  • Apex Conductivity/Salinity Calibration Solution 53000 uS - Neptune Systems
    Apex Conductivity/Salinity Calibration Solution 53000 uS - Neptune Systems $2.95
  • Seawater 35 ppt Refractometer Salinity Calibration Solution - 60 ML - Aquacraft
    Seawater 35 ppt Refractometer Salinity Calibration Solution - 60 ML - Aquacraft $6.99
  • Salinity Refractometer w/ Calibration Fluid - Generic
    Salinity Refractometer w/ Calibration Fluid - Generic $24.95
  • HI98319 Salinity & Temperature Tester - Hanna
    HI98319 Salinity & Temperature Tester - Hanna $69.00
  • Digital Seawater Refractometer MA887 - Milwaukee
    Digital Seawater Refractometer MA887 - Milwaukee $114.00
  • Digital Seawater Refractometer MA887 w/Protective Case - Milwaukee
    Digital Seawater Refractometer MA887 w/Protective Case - Milwaukee $136.00
  • Seawater Refractometer - Red Sea
    Seawater Refractometer - Red Sea $59.99
  • Apex Lab Grade Salinity Probe - Neptune Systems
    Apex Lab Grade Salinity Probe - Neptune Systems $124.95
  • Apex PM2 - Salinity, Temperature, I/O Expansion Module - Neptune Systems
    Apex PM2 - Salinity, Temperature, I/O Expansion Module - Neptune Systems $84.95
  • Salinity Refractometer Calibration Fluid, 53.0mS/1.026SG - American Marine
    Salinity Refractometer Calibration Fluid, 53.0mS/1.026SG - American Marine $8.99
  • AccuraSea Refractometer Calibration Solution (250 ml) - Two Little Fishes
    AccuraSea Refractometer Calibration Solution (250 ml) - Two Little Fishes $11.04
  • Apex Conductivity/Salinity Calibration Solution 53000 uS (5 Pack) - Neptune Systems
    Apex Conductivity/Salinity Calibration Solution 53000 uS (5 Pack) - Neptune Systems $14.95
  • ATC Seawater Refractometer - DD Aquarium Solutions
    ATC Seawater Refractometer - DD Aquarium Solutions $54.99
  • Refractometer Calibration Standard (60 ml) - Brightwell
    Refractometer Calibration Standard (60 ml) - Brightwell $7.99
  • PINPOINT Salinity Monitor Complete Package - American Marine
    PINPOINT Salinity Monitor Complete Package - American Marine $129.95
  • PINPOINT Salinity Monitor - American Marine
    PINPOINT Salinity Monitor - American Marine $119.95
  • LED Lighted Salinity Refractometer w/ Calibration Fluid
    LED Lighted Salinity Refractometer w/ Calibration Fluid $34.95