The YSI ProDSS (digital sampling system) is a portable water quality multiparameter instrument for the measurement of several critical parameters - dissolved oxygen (optical), turbidity, pH, ORP, conductivity, specific conductance, salinity, TDS, resistivity, TSS, ammonium, ammonia, chloride,…

Replaceable cap membrane Removable stirring mechanism Interchangeable design Simplifies measurement operations Use with standard 300 mL BOD bottles; no need for external stirring devices. Improved membrane life assures measurement consistency and speeds maintenance. Probe accuracy…

The TitroLine® 5000 is the first choice if you are looking for a very easy-to-use automatic titrator for any application. Specialized training or a deeper knowledge of automatic titration is not necessary to get precise and quick results. That and much more is exactly what the TitroLine®…

Zobell Solution is used for calibrating ORP/Redox on several YSI instruments. A convenient temperature chart with corresponding ORP values is included for simple calibration value inputs. Concentrated powder makes 125, 250, or 500mL of calibration standard.

With its performance spectrum, the TitroLine® 7000 is the ideal automatic titrator for any a wide range of titration applications. Thanks to the high-resolution and precise pH/ mV and “dead-stop” measuring interface, it is possible to determine a variety of parameters quickly,…

BOD Analyst Program for WINDOWS Conforms to Standard Methods Saves time and reduces errors Automates BOD calculations Insures data integrity Eliminates need for initial measurements of each sample dilution and derives theDO values based on the measurement of only…

An evolution of the Professional Series water quality meters, the ProSolo DIGITAL handheld replaces the ProODO as YSI’s most advanced optical dissolved oxygen field meter. Paired with the latest optical DO and temperature (ODO/T) probe, the ProSolo benefits from years of expertise in…

Calibrate your equipment for maximum accuracy Reagent-grade secondary standards Traceable to NIST standards 1,000, 10,000, 50,000 and 100,000 µmhos/cm Each bottle includes detailed instructions and a table of corrections at temperatures between 20 and 30°C. Packaged…

Automatic Titrator for the coulometric KF-Titration The TitroLine® 7500 KF trace is a compact, easy-to-use coulometric titrator for water determination according to Karl Fischer (KF) with a typical operating range of 1 ppm - 5% water. General features High visibility,…

Enhance your lab’s accuracy with YSI TITRONIC® 300 Manual Titrator. These titrators feature a motor-driven piston burette for precise titrations and dosing of dispensable liquids. Adjustable dosing rate, filling rate and adjustable filling between each dose step makes these units…

Handheld dissolved oxygen instrument for the lab or field! 3-year instrument; 2-year cable warranty User-replaceable cables and sensors. Choose polarographic or galvanic for the field or a self-stirring BOD probe for the lab One Touch Cal allows easy DO calibrations within 3 seconds…

The 556 MPS handheld instrument has been discontinued. YSI will continue to support existing 556’s through 2020. The Professional Plus (Pro Plus) or ProDSS handheld instruments are suitable replacements. Versatile, multi-parameter hand-held instrument Measures…

The Pro DIGITAL ODO/T probe and cable assembly features integral optical dissolved oxygen and temperature sensors. Cable lengths are available up to 100 meters. The ODO/T probe assembly pairs with the ProSolo Handheld to form a complete sampling system. Please visit the ProSolo ODO/T Kits …

The TitroLine® 7750 is the universal automatic titrator for both potentiometric titration and volumetric KF titration. The TitroLine® 7750 combines the features of the potentiometric titrator TitroLine® 7000 and the volumetric Karl Fischer titrator TitroLine® 7500. General…

1198F06: TruLine ORP 50; ORP electrode no temperature, single-junction, refillable, glass shaft with 1-m cable, BNC connector. Dimensions = 120 mm length; 12 mm OD. 1198F07: TruLine ORP 51; ORP electrode no temperature, single-junction, gel electrolyte, epoxy shaft with 1-m cable, BNC…

The EcoSense® line of compact, handheld instruments provides the most accurate data in the most affordable format. The instruments feature an easy-to-use interface, one-hand operation, IP67 waterproof case, and low cost of ownership over the life of the product. The pH100A measures pH, mV/ORP…

Various pH buffers for pH probe calibration. Buffer cases are available with a single buffer type or with an assortment of buffers (2 pints of pH 4, 7, and 10 buffers).

We recommend that YSI-certified polymer-based standards are used for best results. YSI's polymer-based standards are prepared and labeled so they are traceable to the EPA's primary standard, Formazin Polymer standards from other vendors may not be properly adjusted to meet…

The EcoSense® line of compact, handheld instruments provides the most accurate data in the most affordable format. The instruments feature an easy-to-use interface, one-hand operation, IP67 waterproof case, and low cost of ownership over the life of the product. The EC300A simultaneously…

The DO200M dissolved oxygen instrument offers fast dissolved oxygen response times in wastewater, surface water, and aquaculture applications. Available sensors are EPA approved for wastewater compliance reporting of BOD, CBOD, and DO. Compared to the EcoSense® DO200A, the DO200M features…

Connects directly to the YSI 3100 and 3200 Calibrated to OIML recommendations 56 and 68 Cells allow automatic temperature compensation without the need of another probe. For use with 8 pin DIN connector. 3240M01 is of ABS plastic; all others are PYREX® 7740.

Automatic Titrator for the volumetric KF titration The TitroLine® 7500 KF is the universalist for the volumetric Karl Fischer titration with a wide operating range of a few ppm - 100% water content. The addition of the solvent and the extraction of the titrated sample are carried out by…

1194F87: For type: TT625, TT125, KB(L)8S, KB(L)20S 1185F59:  For type: KB(L)8S-BS, KB(L)20S-B 1181L06: For type: TT625, TT125, KB(L)8S, KB(L)20S

Measure pH, mV (ORP) and temperature accurately in the laboratory with the YSI pH 1310 or 1310P with built-in printer. The TruLab pH 1310 benchtop meter is the ideal laboratory instrument for reliable pH/mV measurements with automatic documentation for GLP compliance. The 1310 benchtop is an…

The YSI ProDSS ODO/CT probe is the first expansion of the ProDSS system. The ODO/CT probe and cable assembly features integral (i.e. built-in) optical dissolved oxygen, conductivity, and temperature sensors and is available in lengths up to 100 meters. It’s perfect for measuring DO in the…

Used with ISE TruLine electrodes.

Includes bottle of electrolyte, 1 sanding disc, and 6 screw-on cap membranes. 1.25 mL PE membranes.  Yellow cap. Response Time (T95 - from 0 to 100%) = 8 seconds Flow Dependence After 4 Minutes = 25% Required Flow Rate = 6 inches/second

Accurate, economical, handheld dissolved oxygen measurements using optical technology. The EcoSense® line of compact, handheld instruments provides the most accurate data in the most affordable format. The instruments feature an easy-to-use interface, one-hand operation, IP67 waterproof…

Waterproof, accurate, easy to use colorimeter The 900 colorimeter is a rugged, waterproof, single parameter instrument for the measurement of Total chlorine or Free chlorine. Whether you need to measure chlorine in wastewater, chlorine in groundwater, or in pools, this chlorine tester is…