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Vee Gee STX-3

$105.99 Vee Gee STX-3 Salinity Refractometer ATC ppt SG Reef Sea Marine Water

$ 10599 Save $ 34
$21.49 Hanna HI 721-25 Checker Iron Reagent - (25) Tests HI721 FREE S&H

$21.49 Hanna HI 721-25 Checker Iron Reagent - (25) Tests HI721 FREE S&H

$ 2149
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Nitrate Checker

$345 HI96786 Nitrate Checker Photometer, Hanna Instruments

$ 34500
Sea Side Aquatics Refractometer

$39.99 Sea Side Aquatics Refractometer Measures Salinity Saltwater Aquarium

$ 3999
Salinity Refractometer

$44.99 Ocean Salinity Refractometer for Aquarium Sea Reef Water Heavy Duty, Dual Scale

$ 4499
$47.00 Hanna HI 721 Checker Iron Photometer Meter HI721 FREE S&H

$47.00 Hanna HI 721 Checker Iron Photometer Meter HI721 FREE S&H

$ 4700
HI729

$47.00 Hanna HI729 Fluoride Low Range Checker HC, Photometer 0.00 to 2.00ppm

$ 4700
Red Sea Refractometer

$49.99 Red Sea Seawater Salinity Refractometer

$ 4999 Save $ 15
STX-3 Refractometer

$84.99 BOSS S-10ATC Professional Salinity Refractometer Aquarium Sea Water Dual Scale

$ 8499 Save $ 57
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HI775-26

(2) Hanna HI 775-26 Checker Fresh Water Alkalinity Reagent - (50) Tests

$ 5650
ATAGO Master-S/Mill alpha 0.0-100.0PPT, Salinity 1.000-1.070 SG, ATC, Water Res.

ATAGO Master-S/Mill alpha 0.0-100.0PPT, Salinity 1.000-1.070 SG, ATC, Water Res.

$ 32400
ATAGO Master-S/Mill M 0.0-100.0PPT, Salinity 1.000-1.070 SG

ATAGO Master-S/Mill M 0.0-100.0PPT, Salinity 1.000-1.070 SG

$ 29799
BEST DEAL! Salinity Salt Refractometer 4 Aquarium, Hydrometer SOFTCASE -

BEST DEAL! Salinity Salt Refractometer 4 Aquarium, Hydrometer SOFTCASE -

$ 2260
Hanna HI713

Combo Pack! Hanna HI 713 Phosphate Photometer HI713 + 50 Reagents (HI713-25) Extra

$ 8150
Combo Pack! Hanna HI 713 Phosphate Photometer HI713 - 100 Extra Reagents (HI713-25)

Combo Pack! Hanna HI 713 Phosphate Photometer HI713 - 100 Extra Reagents (HI713-25)

$ 7825
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HI700

Hanna HI 700 Checker HC Ammonia Photometer HI700 FRESH WATER

$ 4700
Hanna HI 700-25 Checker HC Ammonia Photometer Reagents HI700 FRESH WATER

Hanna HI 700-25 Checker HC Ammonia Photometer Reagents HI700 FRESH WATER

$ 1799
HI701

Hanna HI 701 Checker Free Chlorine Photometer HI701

$ 4900
Hanna HI 701-25 Checker Free Chlorine Reagents HI701

Hanna HI 701-25 Checker Free Chlorine Reagents HI701

$ 1149
Hanna HI 711-25 Checker Total Chlorine Reagents HI711

Hanna HI 711-25 Checker Total Chlorine Reagents HI711

$ 1099