GroLine Waterproof pH Tester with 0.01 Resolution - HI98118
Portable pH/EC/TDS/Temperature Meter, EC range: 0 to 6000 µS/cm, TDS range: 0 to 3000 ppm (mg/L) - HI9811-51
pHep Waterproof Pocket pH Tester with 0.1 pH Resolution - HI98107
Portable Total Hardness Photometer with CAL Check- Meter Only - HI97735
Ammonia HR Portable Photometer- Meter Only - HI97733
Nitrate Portable Photometer with CAL Check- Meter Only - HI97728
Phosphate LR Portable Photometer with CAL Check- Meter Only - HI97713
Ammonia MR Portable Photometer with CAL Check- Meter Only - HI97715
Hydrazine Portable Photometer-Meter Only - HI97704
Portable Lux Meter - HI97500
Copper HR Portable Photometer- Meter Only - HI97702
Digital Refractometer for Seawater Analysis - HI96822
Ammonia Low-Range Portable Photometer with CAL Check - Meter Only - HI97700
pH Analog Controller with Dual Output and Self-Diagnostic Test – HI8711
Panel-mounted pH Analog Indicator with Self Diagnostic Test – HI8510
pH Analog Controller with Self-Diagnostic Test – HI8710
Nutrient Analysis Photometer - HI83325-02
Environmental Analysis Photometer - HI83306-02
GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester - HI98131
Aquaculture Photometer - HI83303-02
Marine pH Checker HC – HI780
Freshwater Alkalinity Checker® HC - HI775
0.1° Resolution K-Type Thermocouple Thermometer with CAL Button - HI93531N
0.1° Resolution K-Type Thermocouple Thermometer with High/Low Limit Display - HI93531
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0.23 g/L Sodium Standard Solution (230 mL Bottle) - HI7087M
0.3 g/L NaCl Standard Solution (230 mL Bottle) - HI7085M
0.3 g/L NaCl Standard Solution (500 mL) - HI7085L
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