Name: Benchtop pH Meter
Brand: YEKGLOBAL
SKU: 25
Availability: InStock

Question 1

What is a benchtop pH meter and what applications is it used for?

Accepted Answer

A benchtop pH meter is a high-precision analytical instrument measuring pH, mV, and temperature with ±0.01 pH accuracy, designed for fixed laboratory installation. Used in water quality analysis, food and beverage QC, pharmaceutical formulation, soil analysis, chemical synthesis monitoring, and environmental sampling. GLP data output, automatic buffer calibration, and ATC are standard features on modern instruments.

Question 2

What are the technical specifications of the benchtop pH meter?

Accepted Answer

The YEKLAB benchtop pH meter covers 0.00-14.00 pH with ±0.01 pH accuracy. mV range is -1999 to +1999 mV; temperature range is 0-100°C with automatic temperature compensation (ATC). 1, 2, or 3-point automatic calibration is supported; a large LCD displays pH/mV and temperature simultaneously. USB/RS232 connectivity and GLP data output are included as standard.

Question 3

How is a pH meter calibrated and how often should it be calibrated?

Accepted Answer

Calibration uses NIST-traceable certified buffer solutions (pH 4.01, 6.86, 9.18); modern meters auto-recognize buffer values. For routine QC, a 2-point calibration daily or every 4-8 hours is sufficient; 3-point calibration is applied for wide pH range work. Opened buffer solutions should be used within 1-3 months; degraded or contaminated buffers must not be used.

Question 4

What electrode types are available and how should the right one be selected?

Accepted Answer

Combination glass electrodes are standard for routine applications; gel-filled models are maintenance-free and practical. Refillable KCl electrodes offer a longer lifetime and stable potential. Special electrodes are available for high temperature (>60°C), food penetration, or non-aqueous media; electrode selection directly affects measurement performance.

Question 5

How should a pH electrode be maintained and stored?

Accepted Answer

Between uses, the electrode should be kept in a pH 4 or 7 buffer + 3% KCl storage solution; it must never be left dry or in pure water. Before calibration, equilibrate the electrode at room temperature for 30 minutes and rinse with deionized water. Prolonged contact with strong acids/bases and mechanical damage shorten electrode life.

Question 6

What are common errors in pH measurement and how can they be prevented?

Accepted Answer

Frequent errors: not calibrating daily (drift), storing the electrode in pure water (destroys reference potential), disabling temperature compensation, and measuring without stirring the sample. To prevent increased error in acidic or basic regions, 2-3 point calibration should be used; slow response or drift usually indicates the electrolyte needs renewal or the electrode should be replaced.

Benchtop pH Meter

Product Description

High Precision pH Measurement

Multi-functional Measurement

Advanced Calibration

Applications

Technical Specifications

Product Information

Frequently Asked Questions About Benchtop pH Meter