Analytical Equipment

5 Point Calibration pH Meter

The Advanced 5 Point Calibration pH Meter is a high precision microprocessor based analytical instrument designed for extremely accurate hydrogen ion activity measurements in various liquid solutions. Unlike standard meters, this system allows for a broad 5 point calibration curve using NIST or custom buffers, ensuring linear accuracy across the entire pH scale from acidic to basic ranges. Equipped with a large backlit LCD or touch screen interface, it provides simultaneous display of pH, temperature, and millivolts. The system features automatic temperature compensation and an integrated electrode stand for stable benchtop operation. This meter is engineered for professional laboratories that demand the highest levels of repeatability and compliance with international GLP standards, making it the superior choice for high end research and sensitive chemical analysis.

Primary Laboratory Uses

This instrument is primarily used for measuring the precise acidity or alkalinity of pharmaceutical formulations and chemical reagents. It is utilized in microbiology labs for pH adjustment of culture media to ensure optimal bacterial growth. Researchers also use it for complex titration experiments where minute changes in pH must be monitored. It is an essential tool for testing the stability of cosmetic products and high purity water samples in industrial settings.

Technological Significance

The significance of a 5 point calibration system lies in its ability to eliminate slope errors that occur with simple 2 point meters. By calibrating at five distinct points, the meter creates a more accurate mathematical model of the electrode performance, which is critical when measuring samples at extreme pH levels. This ensures that laboratory results are legally defensible and scientifically sound, providing the high resolution data required for modern molecular biology and advanced chemical engineering projects.

Wide Range Applications

Our pH meters are extensively applied in the Pharmaceutical industry for quality control and in the Food and Beverage sector for monitoring fermentation processes. They are vital for Environmental testing of wastewater and soil samples. Clinical labs use them for physiological fluid analysis while the Agriculture sector relies on them for nutrient solution monitoring in hydroponics and large scale soil testing facilities across the world.

Product Keywords

Microprocessor pH Tester Touch Screen pH Meter Benchtop pH Analyzer Digital Acid-Alkali Meter Precision pH Calibration GLP Compliant pH Meter Laboratory pH Electrode Automatic pH Compensator

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PH METER FAQ

Q1 WHY IS 5 POINT CALIBRATION BETTER THAN 2 POINT
A 5 point calibration ensures much higher linearity and accuracy across a wider pH range. It accounts for potential electrode variances at the extremes of the scale which a simple 2 point calibration might miss.
Q2 HOW OFTEN SHOULD I CALIBRATE MY PH METER
For professional laboratory results we recommend calibrating the meter daily or before each new set of critical measurements. If the samples are highly acidic or basic calibration should be performed more frequently.
Q3 WHAT IS AUTOMATIC TEMPERATURE COMPENSATION
ATC adjusts the pH measurement based on the temperature of the sample. Since pH values are temperature dependent this feature ensures that the reading displayed is accurate regardless of liquid warmth or coldness.
Q4 HOW SHOULD I STORE THE PH ELECTRODE
The electrode should always be kept moist. Store it in a specialized storage solution or a pH 4 buffer. Never store the electrode in distilled or deionized water as it will damage the sensing glass membrane.

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