How to Choose the Right Liquid Analysis Solution for Industrial Applications
Selecting the right liquid analysis solution is critical for industrial process efficiency, product quality, and regulatory compliance. With multiple parameters...
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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 Analysis 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 Analysis 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
Reliable Instruments. Solutions That Fit Your Application.
Instrava is focused on delivering reliable industrial solutions through carefully curated products, application-driven optimization, and flexible customization. We select proven instruments from trusted manufacturers to ensure consistent quality, optimize solutions based on real working conditions to solve practical challenges, and provide tailored configurations to meet specific application needs.
By combining selection expertise with application understanding, Instrava helps customers reduce risk, improve efficiency, and achieve dependable results in complex industrial environments.
What is the principle behind 5-point pH calibration?
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.
What is the acceptable electrode slope range in laboratory standards?
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.
How should electrode offset values be interpreted?
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.
How does the system support GLP compliance?
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.
What is the purpose of firmware upgrade functionality in laboratory instruments?
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.
When is multi-reading mode (auto, timed, continuous) recommended?
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
Built on Consistency, Not Claims
Focused on Industrial Applications
We specialize in industrial analysis and detection, with a clear understanding of real-world operating environments and requirements.
Strict Product Selection Criteria
Every instrument is evaluated based on performance, stability, and application suitability—not just specifications or pricing.
Reliable Supply & Quality Consistency
We work with trusted manufacturers to ensure stable supply, consistent quality, and dependable delivery.
Practical, Experience-Based Support
Our recommendations are grounded in application understanding, helping customers avoid common issues and achieve reliable results.
Instrava is built to reduce uncertainty—so every decision you make is clearer, safer, and more reliable.
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