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Bagged pH standard buffer with pH values of 4.01, 6.86 and 9.18 for 250 ml standard solution

Standard portable Dissolved Oxygen Meter, 1 or 2 point calibrated, automatic end point lock, 9 function parameters can be customized in the setting menu, the meter is suitable for measurement of dissolved oxygen concentration and percentage saturation of samples, Measurement accuracy: 0.2mg/L.

Economical portable Dissolved Oxygen Meter, 1 or 2 point calibrated, can set the salinity and atmospheric pressure coefficient, the instrument is suitable for measurement of dissolved oxygen concentration and percentage saturation of samples, Measurement accuracy: 0.5mg/L.

Standard Portable Water Quality Sclerometer, 5-point button calibrated, optional Water Hardness Unit, the meter is suitable for measurement of calcium and magnesium ion concentration of samples, measurement accuracy: 1% F.S.

Economical industrial online Dissolved Oxygen Meter, 1 or 2 point calibrated, 4 to 20mA signal output, the meter is suitable for water treatment or aquaculture industry to monitor the oxygen concentration or saturation of water quality.

Economical laboratory Dissolved Oxygen Meter, 1 or 2 point calibrated, 6 function parameters can be customized in the setting menu, the meter is suitable for teaching applications, Measurement accuracy: 0.5mg/L.

Economical pen ORP meter with relative and absolute mV measurement modes, the meter is suitable for measurement of Oxidation-reducton potential of samples, measurement accuracy: 2mV.

Economical pen Dissolved Oxygen Meter, 1 or 2 point calibrated, automatic temperature compensation, the meter is suitable for measurement of dissolved oxygen concentration and percentage saturation of samples, measurement accuracy 0.5mg/L.

Multipurpose pen ORP meter, equipped with standard BNC connector, can connect all kinds of oxidation reduction electrode, the instrument is widely used in the environment and industrial fields, measurement accuracy: 2mV.

High-performance wireless Bluetooth Dissolved Oxygen Meter, suitable for Android smartphones or tablets, the meter has dissolved oxygen concentration, BOD, OUR and SOUR Measurement mode, Measurement accuracy: 0.2mg/L.

High-performance wireless Bluetooth Water Hardness Meter, suitable for Android smartphones or tablets, 5-point button calibrated, 12 function parameters can be customized in the settings menu, Measurement accuracy: 1% F.S.

● Dissolve oxygen concentration range: 0.0~20.0mg/L, accuracy : +/- 0.5mg/L ●% saturation range: 0~200%, accuracy : +/- 2.0% ● 1 or 2 point calibrate, automatic temperature compensation, optional salinity and atmospheric pressure coefficient, ● Automatic terminal lock, automatic shutdown, 100 sets of data storage, USB Communication interface

Bagged pH standard buffer with pH values of 4.01, 7.00 and 10.01 for 250 ml standard solution

General TDS standard solution, TDS value 71.8 ppm, capacity 480 ml

General TDS standard solution, TDS value 744.7 ppm, capacity 480 ml

General TDS standard solution, TDS value 7447ppm, capacity 480ml

Equipped with British original electrodes, based on Android Operating system, 2 to 5 point calibrated, setting menu can customize 12 function parameters, Measurement accuracy: 1% F.S.

Measure the relative and absolute mV value of the sample, based on the Android Operating system, 1 point offset calibrated, the setting menu can customize 10 function parameters, Measurement accuracy 0.2mV.