TDSTestr ®, ECTestr ®, and SaltTestr ® Selection Guide Get Better Accuracy. Oakton Instruments offers the only TDS and conductivity Testrs with ±1% full-scale accuracy. This is the best accuracy available on any pocket-sized total dissolved solids or conductivity meter. This can make a tangible difference for your application. A Good Value. You also want a good value when it comes to pocket-sized instruments. Our drive for quality and durability for our TDSTestrs and ECTestrs is what inspires us to do the extra things that may not even be readily apparent. From our use of custom thermoplastic housing materials that offer superior chemical and temperature durability, to our self-diagnostic error messages to help you immediately troubleshoot calibrations, batteries and sensors. Our application-specific microprocessors deliver superior instrument reliability. All of these attributes combine to give you a superior product that delivers long-term value. Lots of Options. Oakton Instruments also gives you options offered by no one else. We offer pocket-sized TDS and EC Testrs that measure across many ranges from the economical EcoTestrs to the versatile multiparameter 35-Series. We also offer a series of testers that include built-in sample cup sensors, and selectable °C/°F temperature readout, a specially designed tester for sodium chloride solutions, and a series of traditional “dip and read” meters. More for Your Money. Better accuracy and a higher-quality product featuring more options. You get it all with the Oakton TDSTestrs, ECTestrs, and SaltTestr. Hydroponics Water Treatment Laboratory Aquaculture Conductivity/TDS calibration pouches and solutions are available. See page 45 to order. Use this chart to find the best Testr for your application Meter See pages Parameters/ models Electrode Accuracy Display Calibration Permanently fixed, stainless steel Up to ±1% full scale One-line LCD Replaceable, stainless steel Up to ±1% full scale Two-line LCD Up to 3-point manual or 2-point automatic Replaceable, stainless steel Up to ±1% full scale Two-line LCD Up to 2-point manual or 3-point manual/automatic Replaceable, combined pH and conductivity module Up to ±1% full scale Two-line LCD Up to 5-point pH; 3-point EC/TDS ...setting the standard again and again®