Thermal vs Vortex vs Differential Pressure: How to Choose the Right Flow Measurement Technology
Selecting a flow meter is rarely about accuracy alone. In industrial applications, the real challenges include: Variable flow rates Pressure...
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Liquid Analysis
Professional Digital Benchtop pH Meter with Pharmaceutical & Cosmetics Testing Use
Engineered for Advanced Laboratory Accuracy and Data Traceability
Instrava Benchtop pH Meters are designed for high-precision laboratory analysis where measurement accuracy, calibration flexibility, and data traceability are essential.
With 0.001 pH resolution, ±0.002 pH electronic accuracy, 1–5 point calibration with automatic buffer recognition, and full GLP-compliant data management, the system delivers research-grade analytical reliability.
The 7-inch high-definition color LCD, intelligent endpoint detection, automatic electrode diagnostics, and multi-mode reading functions provide a stable and professional measurement experience.
For laboratories, environmental agencies, research institutions, and industrial quality control departments, Instrava offers precision backed by structured data control.
Liquid Level Switch Description
Benchtop pH Meters Applicable Scenarios
Instrava Benchtop pH Meters are suitable for:
Research laboratories and universities
Pharmaceutical and medical laboratories
Environmental monitoring centers
Chemical process laboratories
Water quality compliance testing
Industrial product quality verification
The instrument supports high-accuracy measurement across complex and variable laboratory sample conditions.
Benchtop pH Meters Engineering Advantages
0.001-Level High Precision Measurement
pH range: -2.000 – 20.000 pH
Resolution selectable: 0.001 / 0.01 / 0.1 pH
Electronic unit error: ±0.002 pH
mV range: -2000.00 – 2000.00 mV
mV resolution selectable: 0.01 / 0.1 / 1 mV
Delivers laboratory-grade sensitivity and analytical flexibility.
Multi-Point Intelligent Calibration (1–5 Points)
Automatic standard buffer recognition
Selectable buffer groups: NIST, DIN, GB, USA, MERK
Custom buffer group support
Automatic electrode slope and offset diagnosis
Multi-point calibration enhances linearity and improves measurement accuracy across wide pH ranges.
Intelligent Reading Modes
Auto-read
Timed-read
Continuous-read
Auto-hold endpoint detection
Smart endpoint recognition ensures stable and repeatable data capture.
Advanced Temperature Compensation
Temperature range: -10.0 – 135.0°C
Automatic / Manual temperature compensation
Temperature unit selectable (°C / °F)
Electronic temperature error: ±0.1°C
Ensures accurate slope correction across varying laboratory conditions.
GLP-Compliant Data Management
Data storage: 500 sets
Supports viewing, deleting, filtering by time
Table and curve display modes
Data export via USB
Direct printing via RS-232
Designed for full traceability in regulated laboratory environments.
Professional Laboratory Interface
7-inch high-definition color LCD
Button operation with bilingual support
Startup self-diagnosis
Auto power-off
Power failure protection
Firmware upgrade support
Reset to factory settings
IP54-rated housing enhances reliability in laboratory conditions.
Complete Laboratory Configuration
Includes:
E-301-QC 3-in-1 pH composite electrode
NIST standard buffer solutions (4.01 / 7.00 / 10.01)
REX-5 electrode stand
Dust cover
Ready for immediate laboratory deployment.
Liquid Level Switch Parameter
Benchtop pH Meters Technical Specifications
Measurement Performance
| Parameter | Specification |
|---|---|
| pH Range | -2.000 – 20.000 pH |
| pH Resolution | 0.001 / 0.01 / 0.1 pH |
| Electronic pH Error | ±0.002 pH |
| mV Range | -2000.00 – 2000.00 mV |
| mV Resolution | 0.01 / 0.1 / 1 mV |
| mV Error | ±0.03% or ±0.1 mV |
| Temperature Range | -10.0 – 135.0°C |
| Temperature Resolution | 0.1°C |
| Temperature Electronic Error | ±0.1°C |
| Instrument Temp Error | ±0.3°C (0–60°C), ±1.0°C (others) |
Calibration & Data
| Parameter | Specification |
|---|---|
| Calibration Points | 1–5 points |
| Buffer Groups | NIST, DIN, GB, USA, MERK + Custom |
| Data Storage | 500 sets (GLP compliant) |
| Communication | USB / RS-232 |
| Print Support | Yes |
| Display | 7-inch HD color LCD |
| Protection Rating | IP54 |
Mechanical & Electrical
| Parameter | Specification |
|---|---|
| Power Supply | AC100–240V input, DC20V output adapter |
| Dimensions | 242 × 195 × 68 mm |
| Weight | Approx. 0.9 kg |
Designed for High-Integrity Laboratory Measurement
Instrava Benchtop pH Meters combine ultra-high resolution, intelligent calibration systems, electrode diagnostics, and GLP-compliant data management to meet the requirements of advanced laboratory environments.
From academic research to regulated industrial testing, the system ensures precision, repeatability, and traceable analytical control.
Instrava — Engineered for Laboratory-Grade Excellence.
Instrava OEM/ODM
Instrava Engineering & Customization Support
At Instrava, our instruments are developed with a strong focus on real industrial applications. Each product is designed to operate as a reliable component within measurement, control, and automation systems, rather than as a standalone device.
Our engineering team supports customers during product selection by evaluating process conditions, operating environments, and system requirements, ensuring stable and long-term performance in actual use.
In addition to standard configurations, Instrava offers flexible customization options, including measurement range, materials, output signals, communication interfaces, and installation methods. All custom solutions are engineered to meet industrial standards and application-specific demands.
We also support OEM projects and system integration, providing consistent product design, technical documentation, and long-term supply to ensure smooth integration and reliable operation throughout the project lifecycle.
Related Product Recommendations
Five-point calibration establishes multiple reference points across a wide pH range to refine electrode slope and offset correction.
Compared to two-point calibration, multi-point calibration improves linearity over extended ranges (e.g., -2.000 to 20.000 pH), particularly when measuring diverse sample matrices.
It is recommended for research applications requiring high accuracy across acidic, neutral, and alkaline conditions.
The theoretical Nernst slope at 25°C is approximately 59.16 mV per pH.
In practical laboratory conditions, acceptable electrode slope typically ranges between 95%–105% of theoretical value.
Significant deviation may indicate electrode aging, contamination, or reference junction issues. The built-in electrode diagnostics help identify slope and offset status before measurement.
Offset represents the potential deviation at pH 7.00.
A properly functioning electrode typically shows minimal offset (close to 0 mV).
Large offset values may suggest:
Reference contamination
Glass membrane degradation
Improper calibration procedure
Routine monitoring of slope and offset ensures analytical reliability.
GLP compliance is achieved through:
Storage of up to 500 measurement datasets
Time-stamped records
Calibration data retention
Data filtering and retrieval functions
Direct printing via RS-232
USB data transfer to PC systems
This structured data management enables traceability required in regulated research and pharmaceutical laboratories.
Firmware upgrade capability ensures:
Long-term compatibility with evolving laboratory standards
Feature optimization
Bug fixes and performance improvements
Extended instrument lifecycle
It protects laboratory investment and maintains compliance adaptability.
Auto-read mode is ideal for routine laboratory measurement requiring endpoint stability.
Timed-read mode supports standardized testing procedures.
Continuous-read mode is suitable for dynamic reaction monitoring or titration observation.
Selecting the appropriate reading mode improves repeatability and measurement consistency.
Why Choose Instrava
By choosing Instrava, you gain a partner with a deep understanding of industrial applications and the expertise to meet today’s operational challenges.
Our role extends beyond products—we support your success through dependable solutions and long-term commitment.
Engineering-Driven Innovation
Innovation at Instrava is guided by real industrial requirements. We continuously refine our technologies to address evolving operational challenges, ensuring practical and reliable performance in demanding environments.
Application-Specific Customization
We provide engineering-level customization to match specific process conditions. From measurement range and materials to output signals and installation options, our solutions are configured to fit real applications.
Proven Quality and Reliability
Quality and reliability are fundamental to every Instrava product. Manufactured under strict quality control and thoroughly tested, our instruments deliver accurate, stable, and long-term performance.
Global Capability with Local Support
Instrava combines global engineering expertise with responsive local support, ensuring our partners benefit from internationally aligned technology and timely regional service.
Comprehensive Product Portfolio
Our broad portfolio of measurement and control instruments enables us to address a wide range of industrial needs, providing integrated solutions from a single, reliable source.
Partner-Oriented Engineering Support
We work closely with our partners from technical consultation to after-sales support. Our focus is on delivering solutions that create lasting value and support long-term operational success.
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