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» Saltwater Aquarium Supplies » Testing Equipment

» 26 items found
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Price: $25-$55
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Search Suggestions: refractometer | Thermometer | ph probe | temperature controller | pinpoint | hydrometer | probe | Aquarium Refractometer | neptune | Refractometers
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Marine Depot Aquarium Refractometer

Marine Depot Aquarium Refractometer

The Refractometer is a must have for all hobbyists. The proper salinity is crucial for the survival and health of your fish and corals. This high quality refractometer is extremely accurate and easy to use and calibrate. Calibrat...

Avg. Customer Review (81) reviews

Hydrometers & Refractometers: See all items

Related Searches: refractometer | hydrometer | refractometers | refract
Our Price: $49.99
Item Code: MD2101
American Marine Pinpoint pH Probe

American Marine Pinpoint pH Probe

PINPOINT ™ pH Replacement Probe is designed especially with your purpose in mind. It features long, continuous duty expectancy, fast response and, most importantly, is non-toxic to your system. Each probe features a 10 foot ca...

Avg. Customer Review (12) reviews

Replacement Probes: See all items

Related Searches: ph probe | pinpoint | probe | ph
Our Price: $49.99
Item Code: AM1411
Neptune Systems pH Probe

Neptune Systems pH Probe

Precision of +/- .01 10` coax cable Sealed Ag/AgCI reference. Standard BNC connector

Avg. Customer Review (4) reviews

Replacement Probes: See all items

Related Searches: ph probe | probe | neptune | ph
Price Range:
$44.99 to $68.99
American Marine Pinpoint Wireless Thermometer (includes one sensor)

American Marine Pinpoint Wireless Thermometer (includes one sensor)

American Marines Wireless Thermometer Utilizing a radio wave signal, the remote sensor(s) will measure the temperature at the waterproof probe tip and send the information to the PINPOINT Temperature Display Monitor, which will d...

Avg. Customer Review (20) reviews

Thermometers: See all items

Related Searches: thermometer | pinpoint | thermometers | pinpoint ph monitor
Our Price: $36.99
Item Code: AM1131
Rainbow Lifegard Big Digital Temperature Alert

Rainbow Lifegard Big Digital Temperature Alert

Large face digital thermometer with alert feature. Display both aquarium water temperature and room temperature in degrees Fahrenheit. Has 4 alert features. Alarm will sound and LED flashes: high temp alert only, low temp alert on...

Avg. Customer Review (13) reviews

Thermometers: See all items

Related Searches: thermometer | thermometers | digital thermometer | temperature
Our Price: $34.99
Item Code: RB1313
Neptune Systems ORP Probe

Neptune Systems ORP Probe

10` coax cable Platinum band electrode. Standard BNC connector

Avg. Customer Review (1) reviews

Replacement Probes: See all items

Related Searches: orp probe | orp | orp probe orp | ns
Price Range:
$54.99 to $78.99
Neptune Systems Temperature Probe For AquaController Jr, AquaController 3 and PX1000 ONLY

Neptune Systems Temperature Probe For AquaController Jr, AquaController 3 and PX1000 ONLY

Temperature probe for Neptune Systems: ACJr, AC3 and PX1000 Only

Avg. Customer Review (9) reviews

Replacement Probes: See all items

Related Searches: temperature probe | px1000 | temp probe | aquacontroller
Our Price: $29.99
Item Code: NS5155
Hanna Instruments pH Calibration Solution, 20 ml Sachet (25pcs)

Hanna Instruments pH Calibration Solution, 20 ml Sachet (25pcs)

HANNA instruments` buffer solutions are prepared according to precise formulas and are standardized with a pH meter calibrated according to the NIST standards. The 20 mL sachets are single-dose whereas, for more demanding applica...

Avg. Customer Review (1) reviews

Calibration Solution: See all items

Related Searches: ph up | calibration fluid | ph calibration | hanna calibration
Our Price: $25.99
Hanna Instruments Phosphate LR Reagent, 100 Tests

Hanna Instruments Phosphate LR Reagent, 100 Tests

Reagents for phosphate LR, ascorbic acid method Range: 0.00 to 2.50 mg/L

Avg. Customer Review (2) reviews

Calibration Solution: See all items

Related Searches: magnesium test kit | hanna | calcium test | phosphate reactors
Our Price: $25.99
Item Code: HN1311
Neptune Systems Dual 120V Socket Expansion

Neptune Systems Dual 120V Socket Expansion

The Socket Expansion box is a small power strip with controllable 2 outlets used to reduce the power load on a direct connect (DC) box. Since power is supplied from a different circuit, the Direct Connect box`s power budget is not...

Avg. Customer Review (2) reviews

Monitors & Controllers: See all items

Related Searches: neptune | ns | neptune breakout | socket expansion
Our Price: $39.99
Item Code: NS3381
Digital Aquatics Expansion Socket for ReefKeeper Controller

Digital Aquatics Expansion Socket for ReefKeeper Controller

Expansion Socket The Digital Aquatics Expansion Socket allows you to control high current devices without affecting your ReefKeeper power budget

Avg. Customer Review (7) reviews

Monitors & Controllers: See all items

Related Searches: reefkeeper | expansion socket | reefkeeper 2 | test
Our Price: $44.99
Item Code: DA1313
Neptune Systems I/O Break Out Box for Aquacontroller 3 / 3 Pro

Neptune Systems I/O Break Out Box for Aquacontroller 3 / 3 Pro

Easily add float switches, water on the floor sensors, etc. to the AquaController 3 or AquaController 3 Pro. Simply plug the Breakout box`s minidin 8 cable into the AquaController I/O port, and then attach the float switch, or wat...

Avg. Customer Review (2) reviews

Monitors & Controllers: See all items

Related Searches: neptune | aquacontroller | ns | controller
Our Price: $39.99
Item Code: NS5413
Octopus pH & ORP Calibration Kit

Octopus pH & ORP Calibration Kit

pH & ORP Calibration Kit Frequent cleaning and calibration is critical to maintain the precise accuracy of any electrode. This calibration kit includes everything necessary to calibrate both the pH and ORP probes: pH 4.00 buf...

Avg. Customer Review (2) reviews

Calibration Solution: See all items

Related Searches: orp probe orp | orp | orp calibration | calibration fluid
Our Price: $34.99
Item Code: OP3211
Neptune Systems Temperature Probe - Standard

Neptune Systems Temperature Probe - Standard

Precision of +/- 0.1F 6` cable. High quality probe w/ 6` cable Encapsulated thermistor 2.5mm Phono Jack Connector Note: Neptune Systems Temperature Probe for Aquacontroller 2 Only

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Replacement Probes: See all items

Related Searches: temperature probe | ns | neptune | probe
Our Price: $44.99
Item Code: NS5151
Hanna Instruments Replacement Electrode for HI98121, HI 98127, HI 98128, HI98129, HI98130

Hanna Instruments Replacement Electrode for HI98121, HI 98127, HI 98128, HI98129, HI98130

Spare electrode for HI 98121, HI 98127, HI 98128, HI 98129 and HI 98130

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Replacement Probes: See all items

Related Searches: hi98121 | ph probe | hanna | hi98129
Our Price: $49.99
Item Code: HN1211
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