In order to effectively kill, control, and remove impurities in water using

Combine this single probe instrument with a cable and probe. All of the cables provide

The pH/CON 10 reads pH from 0 to 14, autoranging conductivity over four ranges up to 19.99 mS, and

Compact and affordable, the DO 200 provides quick, accurate dissolved oxygen and

Features include push-button calibration, a waterproof housing and a shock-resistant carrying

Offering the ultimate in versatility, the Professional Plus can accommodate any cable

Measure turbidity, color, and chlorine with this innovative meter! The Tri-Meter is ideal for

Measure pH or mV and temperature simultaneously with the economical pH 100 Meter

The T-100 features four-point push-button calibration for full-range accuracy and provides automatic

YSI’s unique pH signal amplifier allows this rugged meter to take measurements up to 50'

A valuable tool in regulatory monitoring, process water testing, and environmental water analysis in

This compact, handheld meter measures conductivity, specific conductance, salinity, and

This meter’s unique four wire cell allows accurate measurement of conductivity, salinity,

This fully portable turbidimeter is ideal for obtaining measurements in the field or

Connect a pH or ISE and a conductivity probe at the same time to simultaneously measure

Expanded range, resolution, and accuracy, plus increased memory and advanced communications! This

Other features include a field-replaceable low maintenance pH sensor, push-button

The dip and read method of this turbidity meter makes taking readings easy.

The YSI® 556 simultaneously measures dissolved oxygen, pH, conductivity, temperature, and ORP

Take measurements immediately – no warm up required! The independent 100% and zero adjustment

The YSI® Model 55 simultaneously displays temperature in degrees Celsius and dissolved

Measure free chlorine, total chlorine, and pH with this laboratory-grade, microprocessor-

Determines salinity, conductivity, dissolved oxygen, and temperature! The YSI® 85 is a

Measure pH, dissolved oxygen (mg/L, ppm or % saturation) and temperature (°C or °F selectable)

The rugged, waterproof YSI 550A measures dissolved oxygen and temperature