$75 - $100

AI235 5052 Compact Saltwater Salinity Pen by Apera

The Apera 5052 Saltwater Salinity Tester is designed for easy and reliable salinity measurements for aquariums, aquaculture, and environmental monitoring. Apera's unique platinum-coated sensor with automatic temperature compensation (ATC) ensures accuracy and precision of the measuring results in a wide range –an accuracy of ±1.5% of full range in 0 to 100 ppt (=100,000 ppm).

The dip-and-test is the easiest way to get reliable saltwater salinity readings (vs. hydrometers and refractometers). Sampling test is not required. Simply dip the meter into saltwater and get stable readings in 10 seconds. No need for rinsing between each test.

Say goodbye to frequent calibration. Calibrating the meter once every month will give you reliable results. The calibration solution is included in the kit.

The meter is designed with a single-button operation powered by 2*AAA batteries. Auto. Power-off and low-battery reminder functions are available.

Comes with a complete kit including the 5052 tester, 2 AAA Alkaline batteries, 50 MS/cm calibration solution, and a carrying case. 2-year warranty with the instrument and 6-month warranty with the sensor.

Note: The Apera 5052 tester measures practical salinity (NOT absolute salinity) converted from conductivity using The Practical Salinity Scale 1978 (PSS-78) and is standardized against the Normal Standard Seawater (S=35), which is accurately calibrated in conductivity ratio (K15). The PSS-78 is recommended by all oceanographic organizations as the scale in which to report salinity data.

• Dip and test - the easiest way to get reliable saltwater salinity readings (range: 0-100 ppt; accuracy:1.5% of full range)
• Apera's unique platinum-coated sensor with automatic temperature compensation (32 to 140°F) ensures accuracy and precision
• Standardized against the normal standard seawater (s = 35), accurately calibrated in conductivity ratio (K15) and in salinity
• Designed for saltwater aquariums, fish farms, and environmental monitoring
• Single-button easy operation. Calibration is only needed once a month

*Please note we can only ship RKI products to customers within the United States

18520-13 Type J Thermocouple Probe Quick Dis-connector, Dual with Std-Connector, 12" L, .250 Dia, Grounded Junction by Digi-Sense

The temperature range is for the probe tip only. The handle material may be affected if the probe is rated higher than the handle depending on exposure time, application, and handle material. ABS handles are rated to 220°F (104°C); PVC handles are rated to 200°F (93°C); Stainless Steel handles are rated at 450°F (232°C); Mini Connectors are rated to 392°F (200°C)

• Ideal for continuous monitoring
• Designed with 316 stainless steel sheath
• Response Time: 1.2 - 5 seconds or greater
• Includes a stand alone female connector for instalation to a thermocouple extension cable
• Each probe comes with a color coded ANSI dual standard connector: type J-black, type K-yellow, type T-blue, and type E-purple.
• Custom designs or changes to this product are available upon request

*Please note we can only ship RKI products to customers within the United States

90550-97 Dampen Back-Con Bimetal Thermometer 5" Dial 4" L Range 0-250F (-20-120C) by Digi-Sense

Accuracy is ±1% full-scale when stem is immersed 2" in liquids or 4" in gases (immerse models with a 2.5" stem length 2" in gases). Measured stem length from the top of the threads to the bottom tip of the stem. Stem dia is 0.25"; threaded connection is 1/2" NPT(M). All thermometers meet or exceed ASME B40.3 standards. Maximum environmental temperature for glass lens thermometers is 500°F (148°C).

• Dampened movement
• More economical than silicone gauges
• Greater temperature range than a silicone-filled gauges
• Anti-parallax dial for accurate readings
• Eliminate the risk of a leaking case and cross-contamination
• Rugged 304 stainless steel construction with a clear glass lens
• Recalibrate using the external reset screw
• Hermetically sealed per ASME B40.3 standard to prevent fogging and protect against tough environments