To replace the very popular Jenway 370 handheld pH meter, two new models have recently been released.
The Jenway 550 and 570 models offer the same portable, flexible and low cost handheld meters we expect, with some new additional features such as the waterproof version now available.
We’ve taken a look at the two new models and what they offer below.
The 550 is the general purpose portable meter option, suited to most everyday uses in the lab or around a site.
It has 2 point calibration, automatic buffer recognition and the standard BNC electrode connection which allows flexibility to choose from within Jenway’s own pH electrode range, or others.
Temperature compensation is automatic, with a separate temperature probe, or can be set to manual.
The lightweight unit is splashproof and has an LCD screen to display temperature and pH simultaneously.
The 570 model offers some additional features and a waterproof housing, making it suited to outdoor use or tasks where
splashing liquids is a greater risk.
It retains the same 2 point calibration, automatic buffer recognition, BNC connection and automatic temperature compensation which the 550 model offers.
The additional features it offers are the display of mV as well as pH and temperature and an IP 66/67 rated waterproof housing.
Comparison of features
|Model||Jenway 550||Jenway 570|
|Shown on screen||pH and temperature||pH, temperature and mV|
|Waterproof?||No (IP 65)||Yes (IP 66/67)|
|pH range (dependent on electrode)||0 to 14||-2 to 16|
|pH accuracy (dependent on electrode)||±0.05||±0.02|
|mV range||N/A||-1000 to +1000 mV|
|mV resolution||N/A||1 mV|
|mV accuracy||N/A||± 1 mV|
|Automatic Temperature Compensation|
(dependent on electrode)
|0 to 60 °C||0 to 100 °C|
|Number of calibration points||2||2|
|Automatic buffer recognition||Yes||Yes|
|Automatic shut off||10 minutes||10 minutes|
|Battery life (hours)||5,000||2,500|
|Connection for pH electrode||BNC||BNC|
|Connection for Temperature probe||3.5mm jack||waterproof Lumberg screw-lock|
Overall the new Jenway handheld pH meters present a good affordable option for an entry level portable pH meter.
The BNC electrode connection allows you flexibility to choose specialist probes if needed, and the option to choose from a lab meter or the waterproof version gives even greater choice.