Automatic Potentiometric Titrator LPTT-T2020

Introduction

Automatic Potentiometric Titrator features a titrating volume accuracy of 0.001 ml, ensuring precise metering of titrant for highly accurate analytical results. The titrator is equipped with advanced a chemically resistant tubing to provide durability with corrosive and sensitive reagents. It has a high mV resolution for improved accuracy in potentiometric titrations. Our automatic potentiometric titrator offers multiple titration modes, providing precise control over titration.

This potentiometric titrator is designed to meet the rigorous requirements of modern laboratory operations, ensuring high precision, reliability, and ease of use for various experimental applications.

Applications

Automatic Potentiometric Titrator is a laboratory instrument that automatically dispenses titrant. It is widely utilized in disease control, marine science, textile industry, petrochemical and environmental testing for monitoring water disinfection parameter.

Specifications

Measuring Range	2000.0 mV to +2000.0 mV -20.000 pH to +20.000 pH
Measurement Resolution	0.1 mV
Measurement Precision	0.1 mV ± 0.03%
Measurement Mode	: Measuring pH / mV/T : pH correction (multi-point) Setting end-point mode Equivalent titrating Dynamic titrating
pH Resolution	0.001 pH
pH Precision	0.003 pH
Titrating Volume Accuracy	0.001ml
Titrating Method	Acid-base titration, redox titration, precipitation titration, complexation titration, non-water titration
Titrating Cup Capacity	250 ml
Temperature Measurement Range	-5 to 120° C
Temperature Resolution	0.01° C
Temperature Measurement Accuracy	±0.1° C
Communication Mode	1 , 232 serial port, ethernet
Fluid Adding Unit	Built-in liquid-adding unit
Liquid-Adding Module Unit	Contains 2 sets of built-in titration liquid-adding channel.
Number of liquid-adding channels	8 channels
Burette Model	1ml, 5ml, 10ml, 25ml, 50ml (10ml standard)
Burette Resolution	1/48000
Time of Replenishing Liquid	10 sec
Control Unit	PC including software
Automatic Sampler	It is compatible with GT robot injection system for mass sample analysis.
Self -Checking Function	Power-on to automatically check the instrument status.
Calibration Function	Yes
Storage Space	> 300G (more than 10000 )
Preset Method	>300G (more than 10000 )
Pipelines	titration pipelines
Valve	Roof type spiral stirrer or magnetic stirring.
Microscale Detection Electrodes	Imported
Micro-Injection Pump	Imported

Features

Precision Dosing Pump

Multiple Titration Modes

Interchangeable Burette System

High-Resolution Display

Integrated Stirring Mechanism

FAQs

1. How do automatic potentiometric titrators correct for electrode drift and ensure a stable baseline?

Automatic potentiometric titrators routinely perform a baseline drift check by recording the potential over a set period before titration and applying software-based auto-zero adjustments to the signal. The instruments use internal algorithms to interpolate any slow potential drift and subtract it from the titration curve in real time. Prior to each run, an initial calibration step against a standard buffer or reference solution is executed to reset the baseline. Many systems also recommend conditioning the electrode in a mid-range buffer (e.g., pH 7.00) for 20–30 minutes between analyses to improve repeatability. Additionally, advanced models incorporate an agitation check to confirm stable mixing, which minimizes potential fluctuations due to sample inhomogeneity. Periodic automated cleaning cycles help remove buildup on the glass membrane or junction, preventing long-term drift. Users can view real-time drift data graphically to assess performance before critical measurements. Comprehensive documentation captures all drift corrections for audit trails.

2. What are the best practices for titrant and reagent standardization in ?

It supplies premium automatic potentiometric titrator . Titrants must be standardized gravimetrically against primary standards—such as potassium hydrogen phthalate for acid titrants—using analytical balances with 0.1 mg readability. Automated titrators often include a “titrant check” routine, which titrates a known concentration to verify molarity and adjusts the calculation parameters accordingly Freshly prepared titrants should be degassed or sonicated to remove dissolved gases that cause volume inaccuracies Record the standardization curve and slope in the device’s method settings to apply batch-specific corrections. For non-aqueous titrations, ensure the titrant solvent is dried over molecular sieves to reduce water content variability. Use volumetric flasks calibrated at the laboratory’s operating temperature to minimize thermal expansion errors. Replace titrant solutions monthly or per your lab’s stability study to avoid degradation. Ensure that burette assemblies are free of air bubbles by priming with titrant before each standardization cycle.

3. How does temperature fluctuation affect titration accuracy in Automatic potentiometric titrator , and how is it compensated?

It supplies premium automatic potentiometric titrator .Temperature variations alter electrode response and titrant density, leading to endpoint shifts if uncorrected. titrators include a built-in thermometer or probe to monitor sample temperature throughout the run. The software applies Nernstian compensation to pH measurements, adjusting the slope factor based on the measured temperature. For volumetric dosing, the pump calibration accounts for titrant viscosity changes with temperature, maintaining delivery accuracy. Users can enable automatic temperature compensation () in the method parameters to correct both potential and volume errors. It is recommended to allow the titrant and sample to equilibrate to lab temperature (±2 °C) prior to analysis Some systems log temperature profiles alongside titration curves for post-run quality checks. In highly controlled environments, an external water b.th can be integrated for tighter thermal regulation.

4. How do first and second derivative methods optimize endpoint detection in ?

It supplies premium automatic potentiometric titrator .Derivative titration methods calculate the slope (1st derivative) or curvature (2nd derivative) of the potential-volume curve to identify the sharpest change corresponding to the equivalence point. The 1st derivative is useful for single-endpoint titrations, where the inflection point yields maximum slope. The 2nd derivative flags multiple equivalence points or closely spaced endpoints by highlighting zero-crossings in the curvature plot. Users can set sensitivity thresholds to filter noise, avoiding false endpoints in low-signal titrations. Advanced software allows overlaying derivative curves in real time, enabling method developers to fine-tune dosing increments. Pre-titration smoothing algorithms (e.g., Savitzky–Golay filters) can be applied to raw data for cleaner derivative profiles. For complexometric titrations with gradual potential changes, derivative methods improve precision over fixed-pH endpoints. Documentation of derivative parameters ensures reproducibility across operators and shifts.

5. What are common error sources in complexometric and non-aqueous titrations and how can they be mitigated in ?

It supplies premium automatic potentiometric titrator . Complexometric titrations often suffer from metal-ion hydrolysis or slow complex formation, leading to endpoint overshoot if the dosing rate is too high. Slowing pump speed near the anticipated endpoint and using incremental dosing improves accuracy. Non-aqueous titrations can be affected by solvent moisture content; pre-dry solvents and titrants over molecular sieves for at least 24 hours. Use a non-aqueous reference electrode compatible with low-dielectric solvents to maintain stable potentials. Implement automatic solvent addition routines to keep the sample volume constant and minimize concentration drift. Complexometric buffers must be titrated for pH control; verify buffer capacity and adjust before sample analysis. Regularly inspect and replace sealing O-rings on burettes to prevent air ingress during slow titrations. Validate methods by performing spike-recovery tests to detect matrix interferences