SIngle mode - Lab Manager€¦ · Mettler Toledo T50 Mettler Toledo T70 Mettler Toledo T90...
Transcript of SIngle mode - Lab Manager€¦ · Mettler Toledo T50 Mettler Toledo T70 Mettler Toledo T90...
Lab Manager's Independent guIde to purchasIng a tItratormay 2011 Copyright © lab manager magazine®
Author: John Buie
titration, a common laboratory method of quantitative chemical
analysis used to determine the unknown concentration of a
known reactant, is today usually performed by a dedicated
titrator. Different types of titrators are available depending on the
specific analysis required. the first consideration when purchasing
a laboratory titrator is to decide what type of analysis is required.
IntroductIon:
Radiometer AnalyticalTitraLab 980
Mettler ToledoT50
Mettler ToledoT70
Mettler ToledoT90
Hiranuma/JM ScienceCOM-300A
A Potentiometric plus KF
Some titrators are equipped to perform both potentiometric and Karl Fischer titrations.
Radiometer AnalyticalTitraLab 870
Hiranuma/JM ScienceCOM-1700
B Conductivity plus potentiometric
Some titrators are equipped to perform both potentiometric and conductivity titrations.
comBIned mode
in some circumstances, particularly where different types of analyses are required from time to time and no single analysis is performed routinely, a combined titrator may be the ideal solution.
Radiometer AnalyticalTitraLab 960
Radiometer AnalyticalTitraLab 854
Radiometer AnalyticalTitraLab 965
Radiometer AnalyticalTitraLab 856
Radiometer AnalyticalTitraLab 845
Radiometer AnalyticalTitraLab 840
Radiometer AnalyticalTitraLab 865
Hiranuma/JM ScienceCOM-300A
Hanna InstrumentsHI 84431
Mettler ToledoDL15
Hanna InstrumentsHI 84100
• Alkalinity
Some titrators are designed specifically to measure alkalinity.
• Alkalinity and acidity
Some titrators are designed to measure both acidity and alkalinity.
B Potentiometricin a potentiometric titration, no indicator is used.
instead, the voltage across the analyte (typically an electrolyte solution) is measured.
d Acid/basethe acidity or alkalinity of a solution may be determined using a classic acid/base titration.
e Other modestitrators can also be designed to analyze single elements such as sulfur or chlorine.
c Stat titrationph-stat titration is applicable to any bioreaction
involving ph variations. the main application of ph-stat titration has traditionally been nitrification monitoring, however it may also be used to monitor any reaction involving the production or consumption of protons, hydroxyl ions, or inorganic carbon chemical species.
most titrators offer one type of analysis, whether it is Karl Fischer, potentiometric or another type. these titrators are suitable for most purposes in which the same types of analyses are performed multiple times.
SIngle mode
• Mono burette
titrators with a single burette are adequate for many standard laboratory applications.
• Mono burette
titrators with a single burette are adequate for many standard laboratory applications.
• Bi burette
more than one burette may be useful for certain analyses (back titration, for example) or when rapid turnover is required.
• Bi burette
more than one burette may be useful for certain analyses (back titration, for example) or when rapid turnover is required.
• Acidity
Some titrators are designed specifically to measure acidity.
Hanna InstrumentsHI 84429
GR ScientificAquamax TAN
Hanna InstrumentsHI 84432
Hanna InstrumentsHI 84430
Hanna InstrumentsHI 84102
• Compact titrator
in situations where space is limited, a compact titrator can be the ideal choice.
• Standard titrator
Standard titrators tend to have greater functionality and sample capacity than compact versions and may be more appropriate when space is not an issue.
COSA InstrumentsCA-200
Metrohm852
Hiranuma/JM ScienceAQV-2200C
Analytik JenaPocket titrator
Analytik JenaAQUA 40.00
Metrohm831
Mettler ToledoC30
Hiranuma/JM ScienceAQ-300
COSA InstrumentsCA-21
Metrohm851
GR ScientificAquamax KF Coulometric
Hiranuma/JM ScienceAQ-2200
Hiranuma/JM ScienceAQ-300
Hitachi High-TechAQ-300
Mettler ToledoC20
Denver Instruments260
SI AnalyticsTitroLine KF trace
Metrohm756
Hitachi High-TechAQ-2200
• Compact titrator
in situations where space is limited, a compact titrator can be the ideal choice.
• Standard titrator
Standard titrators tend to have greater functionality and sample capacity than compact versions and may be more appropriate when space is not an issue.
A Karl FischerKarl Fischer titration is a classic titration method in analytical chemistry used to determine trace amounts of water in a sample. it can be used for determining the water content in fluids, solids, pasty
substances, oils and gases. Karl Fischer titration can use either a coulometric or volumetric technique and is highly accurate with a high selectivity for water.
2 Coulometric in coulometric Karl Fischer titration, the titrant is generated electrochemically in the titration
cell. the coulometric method measures water levels much lower than the volumetric method.
3 Volumetric and coulometric if both volumetric and coulometric titrations are required on a regular basis, the preferred
option may be to select a single titrator that can operate in both modes.
Mettler ToledoV20
COSA InstrumentsKF-21
Hiranuma/JM ScienceAQV-300
Mettler ToledoV30
• Standard titrator
Standard titrators tend to have greater functionality and sample capacity than compact versions and may be more appropriate when space is not an issue.
Metrohm870 Titrino Plus
Hanna InstrumentsHI 903
Hiranuma/JM ScienceAQV-2200
Hitachi High-TechAQV-2200
Radiometer AnalyticalTitraLab 580
Radiometer AnalyticalTitraLab 585
• Compact titrator
in situations where space is limited, a compact titrator can be the ideal choice.
1 Volumetricin volumetric Karl Fischer titration, the titrant is added directly to the sample via a burette.
the moisture content of the sample is determined from the titration volume.
SI AnalyticsTitroLine KF
Hiranuma/JM ScienceAQV-2200
Hitachi High-TechAQV-300
Metrohm890KF Titrando
GR ScientificAquamax KF Volumetric
Metrohm901 Titrando
• Mono burette
titrators with a single burette are adequate for many standard laboratory applications.
• >1 burette
more than one burette may be useful for certain analyses (back titration, for example) or when rapid turnover is required.
Hiranuma/JM ScienceCOM-300A
Hiranuma/JM ScienceCOM-300A
Hiranuma/JM ScienceCOM-300A
Hiranuma/JM ScienceCOM-300A
Hiranuma/JM ScienceCOMM-300A
Hiranuma/JM ScienceCOM-300A
Hiranuma/JM ScienceCOM-300A
Hiranuma/JM ScienceCOM-300A
Hiranuma/JM ScienceCOM-1700
• No Karl Fischer option
titrators used in the analysis of food and drink, for example, may be required to analyze a whole range of factors including chloride, acid and water content. these titrators can be considered 'multi-parameter' systems.
B StandardStandard titrators tend to have greater functionality and sample capacity than compact versions and may be more
appropriate when space is not an issue.
A Compactin situations where space is limited, a compact titrator can be the ideal choice.
multI-pArAmeter SyStem
Mettler ToledoDL22
JASCOATS-429
MantechRapidDuo
Hanna InstrumentsHI 902
SI AnalyticsTitroLine Easy
MantechPC-Titrate
MantechTitraSip SA
Hanna InstrumentsHI 901
MantechQC-Titrate
Mettler ToledoG20
SI AnalyticsTitroLine alpha plus
Cosa InstrumentsGT-100
• Karl Fischer option
Some multiparameters also include the option for KF titration, either through an integral unit or through an optional add-on.
• Specifically for food and drink analysis
Some titrators are specially designed to include the parameters required for the analysis of food and drink, including wine; for example, analysis of salt, water, acid and fat.
• Comprehensive analysis (excluding KF)
Some titrators include a full range of sophisticated analyses including any combination of titration and ion analysis, conductivity analysis, turbidity analysis, color analysis and spectrophotometric analysis for a fully comprehensive system.
Hiranuma/JM ScienceCOM-300A
Hiranuma/JM ScienceCOM-300A
Hiranuma/JM ScienceCOM-300A
Hiranuma/JM ScienceCOM-300A
Hiranuma/JM ScienceCOM-1700
Hiranuma/JM ScienceCOM-1700
STARTHERE