"Complete Meter Stick Optics Bench"
Advanced Benchtop pH/ORP Meter
High-precision benchtop pH and ORP meter with advanced data logging and diagnostics.
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LaMotte 1762 DO Replacement Sensor Kit
Keep your DO meter performing like new. Ensure accurate, reliable results for every classroom experiment.
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Hanna Instruments GroLine HALO2 Wireless Soil pH Tester
Wireless soil pH tester connects to smart devices for real time monitoring and data collection in agricultural applications.
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Hanna Instruments GroLine pH Tester
Compact digital pH tester designed for quick and accurate measurement of nutrient solutions in hydroponic and plant science applications.
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Hanna Instruments GroLine Waterproof Pocket pH/EC/TDS/Temperature Tester
All-in-one handheld tester for monitoring pH, nutrients, and water quality in hydroponic and agricultural systems.
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Hanna Instruments GroLine Waterproof Portable pH/EC/TDS Meter
Portable multi-parameter meter for measuring pH, conductivity, and dissolved solids in agricultural and hydroponic systems.
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Hanna Instruments Soil Test™ Direct Soil EC Tester
Direct soil conductivity tester for measuring salinity and nutrient levels without sample preparation.
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Milk, Cheese, and Meat - Wireless pH Testers
Measure pH across a range of food products with wireless testers designed for milk, cheese, and meat analysis in food science and agricultural studies.
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LaMotte® Dissolved Oxygen TRACER
Measure oxygen concentration and percent saturation
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LaMotte® Salinity/TDS/Temperature TRACER
The electronic salt tester measures the Sodium Chloride level in salt water pools with a range from 0 to 9,999 ppm. TDS is measured from 0 to 9,999 ppm and Temperature from 32.0° to 149°F.
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Polarographic Portable Dissolved Oxygen Meter
This dissolved oxygen meter is a rugged, portable, waterproof dissolved oxygen (DO) meter designed to provide reliable measurements under harsh environmental conditions.
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Vernier® Salinity Sensor
Easily and precisely measure the total dissolved salt content in ocean or brackish water.
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Portable Waterproof pH/EC/TDS Meter, Low Range
Designed to bring simplicity to environmental testing, this pH/EC/TDS Meter is designed specifically for use in manufacturing and environmental testing protocols. The specialized electrode combines 3 sensors in a single rugged probe body featuring a polypropylene body, integrated temperature sensor, and cloth junction.
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Oakton® Waterproof pHTestr3+
The double junction electrode is ideal for dirty water, heavy metals, sulfides, tris buffers, and organics. The tester also features a pH and temperature readout toggle, automatic temperature compensation, and a replaceable sensor.
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Pocket pH Meter with Case
Portable for easy, convenient carrying into the field, this pocket-sized meter features a digital display and is equipped with automatic temperature compensation.
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Conductivity/Total Dissolved Solids Tester, HI98311, Hanna Instruments
This tester is an advanced, waterproof conductivity and TDS (ppm) tester for quick and easy measurements while on the go. This lightweight, waterproof conductivity tester offers accurate conductivity (0 to 3999 µs/cm), TDS (0 to 2000 ppm), and temperature measurements in a single, portable, pocket device. No more switching between meters for your routine measurements.

