Tracer Test Kit Refractometers Hydrometers Pocketester
Lamotte Tracer
Salinity Test Kit Salinity Refractometers Salinity Hydrometers Salt Pocketester
YSI Pro30 Meter



Precision specific gravity hydrometer for salinity measurement. Glass with scale graduated in divisions of 0.0005 from 1.000 to 1.070 Specific Gravity. Each unit is checked against NIST certified standard. Includes table to convert reading to salinity in parts per thousand (ppt). Length 13" (330 mm), scale length 5.5" (140 mm). Use with hydrometer cylinder (E35002) and thermometer.

Hydrometer Cylinder:

Precision molded clear plastic (PMP) 500 ml cylinder with broad base for extra stability and easy-to-read, molded 1 ml graduations. Clear, durable polymethyl-pentene cylinder is never slippery, even when wet.

#6602-7: Salinity Hydrometer $34.00
#E35002: Hydrometer Cylinder $35.75

instant ocean hydrometer

Easy to use and inexpensive. Range of 0-40% ppt (1.000-1.030 sg). Accurate to 1.5 ppt. Direct reading in ppt and specific gravity.

#HYD10: Instant Ocean Hydrometer Discontinued

instant ocean hydrometer

Fluval Sea Hydrometer provides an accurate and convenient method of measuring specific gravity and salt level in marine aquariums. Regular testing is strongly recommended as stable salinity levels are essential for the health of marine fish and invertebrates. Compact and easy to use, the hydrometer can be permanently installed inside the tank for continuous readings. Its slim, low-profile design camouflages well inside the tank and will not diminish the aesthetics of the aquarium. It can also be used as a portable device, allowing you to take samples simply by submerging it in the water. It features large, easy-to-read markings with ideal salinity range clearly marked in green for clarity.

#FHYD10: Fluvial Sea Hydrometer $12.99

salt tester

The Salt PockeTester measures the Sodium Chloride level from 0 to 10,000 ppm (10.00 ppt). It is packaged in a rugged carrying case and a special calibration standard is included. Easy calibration trimmer is located inside the battery compartment to prevent accidental tampering. Sensor element is 316 SS and replaceable. Batteries included.

#5-0078-01: Salt PockeTester $169.00
#5-0084: Salt PockeTester Replacement Electrode $85.00

salt tracer

• Autoranging meter offers 3 ranges to measure pure water to salinity solutions using the same conductivity cell
• Instructions included for measuring TDS in soil.
• 4 selectable units: S or mS (Conductivity), ppm/ppt (TDS), mg/L or gL (TDS), and ppm/ppt (Salinity S)
• Range:
      Conductivity - 0-199.9 S/2-19.99 mS
      TDS - 0-999 ppm/1.0-99.9 ppt
      Salinity - 0-999 ppm S/1.00-9.99 ppt S
• Power: Four LR-44 batteries
• Memory stores and recalls 15 readings
• Large 3- digit (2000 count) digital display
• Data Hold, Auto shut-off and low battery indication
• Automatic Temperature Compensation
• Simultaneous display of Conductivity or TDS and Temperature
• Measures Temperature from 32 to 149F (0 to 65°C)
• Self calibration on power up
• Waterproof design
• Complete with meter and Conductivity cell, protective sensor cap, and neck-strap
• Optional weighted base holds plastic cup and meter
• Includes Meter, Probe and Sample Cup

#1749: TRACER EC/TDS/SALT Meter $137.00
#1765: Replacement Electrode for 1749 $77.00
#1746: Weighted Stand with 5 ample Cups $31.00


This Salinity test kit is supplied with a direct reading titrator, reagents, and step-by-step instructions. All are supplied in a compact carrying case. Measures salinity from 0-20 ppt in 0.4 ppt increments. Reagents for 50 tests.

#7459-02: LaMotte Salinity Test Kit $93.00
#R-7459-01: Replacement Salinity Reagent Set $57.00

ysi Pro30

The YSI Pro30 field conductivity meter simultaneously measures conductivity, specific conductance, salinity, total dissolved solids (TDS) and temperature. User-replaceable cables and convenient Quick Cal features make it extremely user-friendly. The instrument also features Mil-spec (military spec) quarter-turn locking connectors, an IP-67 waterproof rating with a rubber over molded case, and 1-meter drop test rating.

The super-stable 4-electrode conductivity cell is built directly into the cable bulkhead providing years of accurate data. The conductivity cells are designed for rugged field performance and are easily cleaned with a small conductivity brush.

Other features include:
• Quick Cal routine allows calibrations with the push of a button; remembers previous calibration values and walk user through the routine
• Stores 50 data sets
• Graphic, backlit display and glow in the dark keypad
• Available with 1, 4, 10, 20, or 30-meter cables (4-meter and longer cables include cable management kit)
• View display with polarized sunglasses on
• Multiple languages include English, Spanish, French and German
• User-replaceable cables utilizing a robust MS connector that locks in place with a quarter turn rotation
• Conductivity cell is part of the cable bulkhead and is a proven, field-worthy electrode
• 3-year instrument; 2-year cable warranty

Order instrument and cables separately below.

YSI-PRO30: YSI PRO30 Meter Body $740.00
YSIPRO-30-4: YSI Pro Series Conductivity Cable, 4m $432.00
YSIPRO-30-10: YSI Pro Series Conductivity Cable, 10m $505.00
YSIPRO-30-10: YSI Pro Series Conductivity Cable, 20m $565.00