• Jenway offer a wide variety of pH Meters available as either portable instruments or laboratory instruments. The portable pH instruments are available from either the Enterprise range (Models 350, 370 and 430), or from part of the Premier Portable range. A brief summary of the pH Meters available is outlined below, but further details can be found by following the link to the instruments individual page. A 3 decimal place, 3 point calibration research grade Laboratory pH/Ion Meter, the Model 3345 is also available. Capable of reading between -2 and 16.00pH at 0.01pH intervals, the instrument features a back-lit LCD display, auto buffer recognition and manual temperature compensation over the range 0 to 100ºC.

• The portable Model 370 is a general purpose pH, mV and Temperature meter housed in a slim-line case. The Model 370 can measure between -2 and 16.00pH, -1999 and +1999mV, and -10 to +105ºC. This instrument also features a back-lit LCD display, auto buffer recognition and automatic temperature compensation over the range 0 to 100ºC.

• The Model 430 pH, Conductivity/TDS and Temperature meter provides a portable means of determining the pH, conductivity or TDS of a wide range of industrial or environmental samples. The instrument features an innovative new combined pH and conductivity probe assembly with an integral ATC sensor.

• The Model 3150 pH Meter is part of the Premier Portable range. Designed to readily withstand the rigours of portable analysis, the Model 3150 pH Meter can measure pH, mV and temperature in a simple and professional manner, even by novice users. Fully menu driven, the Model 3150 pH Meter displays readings on a large, clear seven segment Liquid Crystal Display. Up to 100 readings can be manually stored in non-volatile memory which can be recalled at any time for reference. The Model 3150 pH Meter can measure -2 to +16.00pH, -1999 to +1999mV, and -10 to +105ºC (+14 to +220ºF).

• The Model 3205 pH/Ion Meter, also part of the Premier Portable range, offers all of the features of the Model 3150 detailed above. The Model 3205 pH/Ion Meter, however, also offers a dedicated ion analysis mode giving an unprecedented opportunity for field measurement in a wide variety of ions. Concentration may be displayed in integer or exponential format, in any of six concentration units (activity, %, ppm, mg/l, moles or none).

• The Model 3505 pH Meter is one of three new laboratory pH Meters available. At the lower end of the specification and price table, the Model 3505 pH Meter can measure between -2.00 and 16.00pH, -1999 and +1999mV, and -10 to +105ºC. Power is supplied by either a 9V PP3/MN1604 battery, or 9V AC Power Supply Unit. Readings are displayed on a 3.5 digit Liquid Crystal Display.

• The Model 3510 pH Meter is the mid-range laboratory pH Meter. Measuring between -2.000 and 19.999pH, -1999 and +1999mV, -10 and +105ºC, and +14 to +221ºF, the Model 3510 pH Meter can store up to 32 results for review at a later date. Temperature compensation is automatic between 0 and 100ºC, and calibration is user selectable - 1, 2 or 3 point. The Model 3510 pH Meter is powered by a 9V AC Power Supply Unit.

• The Model 3520 pH Meter is the top-range laboratory pH Meter offered by Jenway. With a reading range the same as the Model 3510 pH Meter detailed above, the Model 3520 pH Meter contains a 24 hour clock for accurate time-stamping of readings. To ensure Good Laboratory Practice (GLP), the instrument also features a calibration data status display and a calibration reminder facility can be set with an interval of between 1 and 999 hours from last calibration. The Model 3520 also features security code protected user data and 1, 2 or 3 point calibration to DIN 19 266, JIS Z 8802 or NIST standards.

• The new GLP compliant Model 3540, a combined pH / Conductivity Meter is also available. The Model 3540 features simultaneous measurement of both pH and Conductivity with no electrical interference between sensors.

• A comprehensive range of accessories and consumable items are also available to suit all models.

pH METERS - MAIN SPECIFICATION OVERVIEW

Below is a brief summary of the key specification differences between the pH Meters available. Full specification details can be found by following the link to the instruments individual page.

Model	350	370	430	3150	3205	3505	3510	3520
Style	Portable	Portable	Portable	Portable	Portable	Laboratory	Laboratory	Laboratory
Display	Back-lit LCD	Back-lit LCD	Back-lit LCD	Custom segment LCD	114 x 128 graphics LCD	25mm LCD	Back-lit custom LCD	Back-lit 1/8 VGA monochrome LCD
pH
Range (pH)	-2 to +16	-2 to +16	0 to 14	-2 to +16	-2 to +16	-2 to +16	-2 to +19.999	-2 to +20.000
Resolution (pH)	0.01	0.01	0.01	0.01	0.01	0.01	0.001 0.01 0.1	0.001 0.01 0.1
Accuracy (pH)	±0.02	±0.02	±0.02	±0.02	±0.02	±0.02	±0.003	±0.003
mV
Range (mV)	-	0 - ±1999	-	0 - ±1999	0 - ±1999	0 - ±1999	0 - ±1999	0 - ±1999
Resolution (mV)	-	1	-	1	1	1	0.1	0.1 / 1.0
Accuracy (mV)	-	±1	-	±1	±1	±1	±0.2	±0.2
Temperature
Range (ºC) (ºF)	-	-10 to 105 +14 to +221	-9.9 to 99.9 +14 to +212	-10 to +105 +14 to +220	-10 to +105 +14 to +220	-10 to +105 -	-10 to +105 +14 to +221	-10 to +105 +14 to +221
Resolution (ºC) (ºF)	-	0.1 1	0.1 1	0.1 1	0.1 1	0.1 -	0.1 1	0.1 1
Accuracy (ºC) (ºF)	-	±0.5 ±1	±0.5 ±1	±0.5 ±1	±0.5 ±1	±0.5 -	±0.5 ±1	±0.5 ±1
Power	2 AA Cells	2 AA Cells	2 AA Cells	3 AA Cells	3 AA Cells	9V Battery or external PSU	9V AC PSU	9V AC PSU
Real time clock	-	-	-	-	Yes	-	-	Yes
Datalogging	-	-	-	-	100 results	-	32 results	512 results
Dimensions	175 x 75 x 35mm	175 x 75 x 35mm	175 x 75 x 35mm	200 x 80 x 60mm	200 x 80 x 60mm	210 x 250 x 55mm	210 x 250 x 55mm	210 x 250 x 55mm
Weight	250g	250g	250g	370g	370g	850g	850g	850g

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