Pen Type pH Tester
Portable pen-type pH meter with replaceable electrode, automatic temperature compensation, and 0.01 pH resolution for field and laboratory pH measurements from 0.00-14.00 pH.
Louise Corscadden, PhD
Director of Science · ConductScience
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Key Specifications
Full details →- Model fit
- Configured during quote
- SKU family
- CS-LH-PH-033
- Sizing
- 7.68 x 3.74 x 1.89 cm
- Ordering
- Online checkout and quote request available
- Category
- pH Meters
- Build notes
- Confirm accessories, station layout, and support needs before purchase
The PH-033 Pen Type pH Tester provides accurate pH measurements from 0.00 to 14.00 pH units with ±0.1 pH accuracy and 0.01 pH resolution. This handheld instrument features automatic temperature compensation across 0-50°C through an integrated temperature sensor in the probe assembly. The replaceable electrode design allows for field maintenance and compatibility with standard pH electrodes sharing the same connector type.
The compact pen-style form factor (195×95×48mm, 98g) enables portable pH monitoring in laboratory, field, and process environments. Single-point calibration streamlines setup procedures while maintaining measurement reliability within the specified accuracy range. The instrument operates effectively in temperatures from 0-50°C with relative humidity below 95%.
How It Works
The PH-033 operates on electrochemical principles using a glass electrode that develops a potential proportional to hydrogen ion activity in solution. The replaceable pH electrode generates a voltage response that correlates with solution pH according to electrochemical theory. Temperature compensation is achieved through a dedicated temperature sensor integrated into the probe assembly, automatically adjusting measurements across the 0-50°C operating range.
The instrument processes the electrode signal through internal electronics to display pH values with 0.01 pH resolution. Single-point calibration establishes the measurement reference using a known pH standard. The replaceable electrode design allows users to maintain measurement capability by installing new electrodes when the existing sensor reaches end-of-life or requires replacement for different measurement conditions.
Features & Benefits
Measuring range
- 0.00-14.00 pH
Research Domain
- Analytical Chemistry
- Environmental Monitoring
- Food Science
- Industrial Hygiene
- Microbiology
- Pharmaceutical QC
Model
- PH-033
Calibration
- 1 point
ATC
- 0-50 ºC
Working condition
- 0-50°C, RH<95%
Automation Level
- manual
Brand
- ConductScience
Accuracy
- ±0.1 pH
Dimensions
- 195*95*48mm
Weight
- 98g
Weight
- 0.42 kg
Dimensions
- L: 7.68 mm
- W: 3.74 mm
- H: 1.89 mm
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Electrode Replaceability | User-replaceable electrode design with standard connector compatibility | Many entry-level pH pens have fixed electrodes requiring complete unit replacement | Reduces long-term operational costs and enables field maintenance without instrument downtime |
| Temperature Compensation | Automatic compensation from 0-50°C with integrated sensor | Basic models often require manual temperature corrections | Eliminates calculation errors and improves measurement reliability across varying conditions |
| pH Resolution | 0.01 pH resolution | Entry-level instruments commonly offer 0.1 pH resolution | Provides more detailed pH characterization for quality control and analytical applications |
| Measurement Range | 0.00-14.00 pH full scale coverage | Some portable meters have limited ranges excluding extreme pH values | Accommodates the complete pH spectrum for universal application flexibility |
The PH-033 combines replaceable electrode technology with automatic temperature compensation and 0.01 pH resolution in a compact pen format. The instrument provides accurate pH measurements across the full 0-14 pH range with user-serviceable components for extended operational life.
Practical Tips
Perform calibration at temperatures close to your sample measurement temperature when possible.
Why: Minimizes temperature-related measurement errors despite automatic compensation.
Store electrode in appropriate storage solution between measurements, not distilled water.
Why: Prevents electrode dehydration and maintains response characteristics for accurate measurements.
Allow sufficient immersion depth and wait for reading stabilization before recording values.
Why: Ensures complete electrode response and eliminates transient measurement artifacts.
Rinse electrode thoroughly between samples to prevent cross-contamination.
Why: Eliminates carryover effects that can bias subsequent measurements.
Check electrode response in fresh calibration buffer if readings appear erratic.
Why: Verifies electrode condition and measurement system performance independently of sample characteristics.
Protect instrument from excessive moisture exposure during field measurements.
Why: Maintains electronic integrity within the specified RH<95% operating condition.
Setup Guide
What’s in the Box
- PH-033 pen-type pH meter (typical)
- pH electrode assembly (typical)
- Protective electrode cap (typical)
- User manual (typical)
- Calibration buffer solution (typical)
Warranty
ConductScience provides standard one-year manufacturer warranty covering defects in materials and workmanship. Technical support is available for calibration procedures, maintenance guidance, and troubleshooting assistance.
Compliance
References
Background reading relevant to this product:
What is the measurement accuracy and how does temperature affect readings?
The PH-033 provides ±0.1 pH accuracy with automatic temperature compensation from 0-50°C. The integrated temperature sensor eliminates the need for manual temperature corrections.
Can I replace the electrode myself, and what electrodes are compatible?
Yes, the electrode is user-replaceable by unscrewing from the meter body. The instrument accepts virtually any electrode with the same connector type as the original.
How often should I calibrate the instrument?
Calibration frequency depends on application requirements and measurement accuracy needs. For critical applications, daily calibration is recommended. The single-point calibration procedure is streamlined for routine use.
What is the response time and stability of measurements?
Response time varies with sample characteristics but typically stabilizes within 30-60 seconds. The 0.01 pH resolution provides stable readings suitable for quality control applications.
Can this meter be used for continuous monitoring applications?
The PH-033 is designed for spot measurements rather than continuous monitoring. For extended measurement periods, consider electrode storage and drift characteristics.
What maintenance is required for optimal performance?
Regular electrode conditioning, proper storage in appropriate solutions, and periodic calibration verification maintain optimal performance. The replaceable electrode design facilitates maintenance.
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