Pyxis SP-505 and SP-600 Handheld Water Multimeters

The Pyxis SP-505 and SP-600 are multi-parameter handheld meters that measure several water parameters in the field from one hand-held body. Both combine electrochemical (pH/ORP, conductivity) and optical (DPD chlorine colorimetry) measurement in a cuvette-less platform. The difference between them is the parameter set: the SP-505 includes a turbidity channel, while the SP-600 measures conductivity over a wider range (up to 200,000 µS/cm) and also gives TDS and resistivity. In Turkey, Mikron Proses (Üsküdar, Istanbul) provides application consulting on selecting the right model for your parameter set.

Parameter set · Model selection → Send us your requirement

For an overview of portable instruments, see the guide on handheld water analyzers. For the same brand’s colorimeters and fluorometers, see the SP-800, SP-208 and SP-210 and handheld fluorometers pages.

SP-505: pH / ORP / conductivity / turbidity / chlorine

The SP-505 measures water parameters from one body: pH (0-14, automatic temperature compensation / ATC, ±0.01 pH precision), ORP (±1,500 mV, ±1 mV), conductivity (1-15,000 µS/cm, ATC, ±1% or ±1 µS/cm), turbidity (0-100 NTU, ±0.1 NTU, ISO-7027 method), free and total chlorine (by the DPD wet chemistry method, 0.00-10.00 ppm, ±0.01 ppm) and sample temperature (0-70 °C, ±0.1 °C). For the chlorine test, conventional DPD free and total powder pillows are used (Pyxis or a standard supplier).

SP-600: conductivity / TDS / resistivity / pH / ORP / chlorine

The SP-600 measures conductivity over a much wider range than the SP-505: 1-200,000 µS/cm (ATC, ±1% or ±0.2 µS/cm). At the same time it gives TDS (calculated by default with a factor of µS/cm × 0.67, customizable in the uPyxis app) and resistivity (10-30 Megohm, ±1%). The other measured parameters are pH (0.00-14.00, ATC, ±0.01 pH), ORP (±1,500 mV, ±1 mV), DPD free and total chlorine (0.00-10.00 ppm, ±0.01 ppm) and sample temperature (0-70 °C, ±0.1 °C).

Common platform: replaceable Bluetooth pH/ORP module

Both instruments share the same mechanical and electronic platform: a replaceable, waterproof pH/ORP module powered by a 3.7 V battery that communicates with the main body over Bluetooth 5.0. The module can be replaced in the field without disassembly, and the manufacturer states a typical module life of 18 months. The body has IP67 protection through a fully molded screen, and a built-in humidity sensor shows an alarm on the screen when moisture is detected in the electronics compartment. Both models measure 208 × 80 × 45 mm, weigh 520 g (without batteries) and run on (4) AA alkaline batteries; the typical battery life is 10,000 readings.

Data logging and the uPyxis connection

The SP-505 and SP-600 store up to 8 GB of time-stamped historical data internally and transfer it wirelessly to the uPyxis mobile or desktop app over Bluetooth 5.0. The screen has a LOCK-IN function that holds the result once the reading has stabilized, and the color LCD display is readable in direct sunlight.

Which model for which application

The SP-505 covers six parameters with one instrument where turbidity measurement is also needed. The SP-600 is the choice where conductivity, TDS and resistivity come to the front. Tell us the parameter set at your site, and we can assess together which model meets your requirement.