Benchtop pH Meter

PH50

The PH50 Series Benchtop pH Meters are advanced analytical instruments designed for high-precision pH measurement in laboratories and industrial settings. Equipped with digital electrode technology and an intelligent calibration system, they deliver rapid, stable, and reliable results across diverse fields:

Healthcare: Pharmaceutical quality control, biomedical research.
Environmental: Wastewater analysis, soil testing, acid rain detection.
Academic & Industrial: Chemical production, food processing, geological exploration.

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Description
Accessories

Brand: WATENV
Commodity name: Benchtop pH Meter
系列: PH50

Features

Displays calibration, measurement, and data stabilization indicators, along with temperature values and electrode slope parameters.

Supports backlight function, factory reset, manual temperature compensation, and continuous measurement mode.

Enables automatic recognition of NIST, USA, and EURO calibration standards with up to 5-point calibration capability.

Provides stable measurement mode and data lock functionality.(PH50-3/4/5)

Incorporates auto-shutdown and automatic temperature compensation features. (PH50-3/4/5)

Facilitates data storage, deletion, review, printing, and transmission. Supports mV resolution switching (PH50-3/4/5).

Technical Parameters

Model	PH50-1	PH50-2	PH50-3	PH50-4	PH50-5
Voltage	AC 100~240V DC 9V
Display	4 inches LCD		6 inches LCD
Protection Rating	IP54
pH Range	0.00~14.00	0.00~14.00	-2.00~18.00	-2.00~18.00	-2.00～20.000
pH Repeatability	0.05	0.01	0.01	0.01	0.005
pH Error of Indication (Electronics units)	±0.05pH	±0.01pH	±0.01pH	±0.01pH	±0.002pH
pH Error of Indication (Instrument)	±0.1pH	±0.02pH	±0.02pH	±0.02pH	±0.01pH
mV Range	-1599mV～ 1599mV	-1800mV～ 1800mV	-1999mV～ 1999mV	-1999mV～ 1999mV	-2000mV～ 2000mV
mV Resolution	1	1	1	1	0.01
mV Error of Indication (Electronics units)	±1%FS	±0.1%FS	±0.1%FS	±0.1%FS	±0.03%FS
Temperature Compensation	Manual	Manual	Manual	Automatic/Manual
Temperature Compensation Range	0.00～60.0℃			0.00～60.0℃/ -5.0～110.0℃	0.00～60.0℃/ -5.0～110.0℃
Auto-Shut Off Function	/	/	Y	Y	Y
Calibration Points	1-2	1-2	1-3	1-3	1-5
Auto-Buffer Recognition	NIST: 4.00pH, 6.86pH, 9.18pH USA: 4.01pH, 7.00pH, 10.01pH EURO: 4.01pH, 7.01pH, 9.21pH				NIST: 1.68, 4.00, 6.86, 9.18, 12.46 USA: 1.68, 4.01, 7.00, 10.01, 12.46 EURO: 1.68, 4.01, 7.01, 9.21, 12.46
Data Storage Function	/	/	50 sets of data storage, review, and deletion		500 sets of data storage, review, and deletion
Standard Electrode	E-201-C	E-201-C	E-201-C	E-301-C	E-301-C
Net Weight (kg)	~1	~1	~1	~1	~1
Dimensions (L×W×H)(mm)	193.6×189.2×74.8

pH Electrode Combination	E-201-C	E-301-C
pH Measurement range	0~14ph	0~14ph
Junction Type	Single Salt Bridge	Single Salt Bridge
Reference System	Ag/AgCl	Ag/AgCl
Reference Junction Type	Non-refillable	Non-refillable
Connector Type	BNC (Q9)	BNC (Q9)
Cable Length	1 meter	1 meter
Operating Temperature	5~60℃	5~60℃
Electrode Storage Solution	3 mol/L KCl	3 mol/L KCl
Sensing Membrane	Spherical glass bulb	Spherical glass bulb
Combination	Reference + sensing	Reference + sensing + temperature probe
Temperature Electrode	/	2.5mm audio jack connector
Dimensions	12mm*160mm	12mm*160mm
Weight	0.060kg	0.078kg

pH Electrode Glass	6502	6503
pH Measurement Range	2–12	0–14
Junction Type	Ceramic	Ceramic
Electrode Body Material	Glass	Glass
Reference System	Ag/AgCl	Ag/AgCl
Reference Junction Type	Double junction, Refillable	Double junction, Refillable
Connector Type	Q9	Q9
Cable Length	1 meter	1 meter
Operating Temperature	5–90°C	5–90°C
Electrode Storage Solution	3 mol/L KCl	3 mol/L KCl
Sensing Membrane	Spherical glass bulb	Spherical glass bulb
Combination	Reference + sensing	Reference + sensing
Dimensions	φ12 × 165 mm	φ12 × 165 mm
Weight	0.1 kg	0.1 kg

Electrode Selection Guide

pH Electrode Glass	6502	6503
General Laboratory Use	Y	Y
Strong Acids/Bases or High-Corrosion Environments	×	Y
Low-Conductivity Solutions	Y	×
Pure Water	Y	×
Biochemical samples	×	×
Tris-containing solutions	×	×
Soil Water, Wastewater	×	Y
Viscous, Emulsion, or Oily Substances (emulsions, food products, cosmetics, pigments, paints)	×	Y

(Note: Y = Suitable, × = Unsuitable)

ORP Electrode	5001
Body Material	Plastic
Sensor Design	Needle-Type PlatinumTip
Reference System	Plastic Fiber, Single Junction, Non-Refillable
Connector Type	Q9
Cable Length	1 Meter
Operating Temperature	5–60°C
Electrode Storage Solution	3mol/L KCl Solution
Electrode Features	General-Purpose
Dimensions	Φ12×160mm
Weight	0.1kg

Conductivity Electrode	DJS-0.1	DJS-1 (Platinum Black)	DJS-10 (Platinum Black)
Application	Ultra-pure water, pure water	Environmental water, routine water	High-electrolyte solutions
Housing Material	Glass	Glass	Glass
Cell Constant (K)	0.1±0.02	1±0.2	10±2
Measurement Range	0.055～300µS/cm	50～2000µS/cm	2～100mS/cm
Dimensions (mm)	φ12×155	φ12×155	φ12×155
Weight (kg)	0.1	0.1	0.1

Temperature Electrode	T-10K
Material	Stainless steel
Temperature Coefficient	10K
Measurement Range	0-100℃
Dimensions	φ12×155 mm
Weight	0.1kg

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Portable pH Meter