TitraLab 845
Routine Potentiometric Titration Workstation (Bi burette)

With the new multi-technique TitraLab 845 bi-burette titration workstation you can benefit from superior quality results at the touch of a button. Ideal for routine applications, its use is simpler than ever before. The TitraLab 845 represents today the best value for money on the market for routine potentiometric titrations.

• Total acidity in milk
• Salt content in butter
• Acidity in cheese
• Chloride in milk, butter, other dairy products
• Routine measurement of CIP Acid and Base strength

Salt in Butter The silver nitrate reacts with the chloride ion according to (Ag+, NO3-) + Cl- → AgCl (precipitate) + NO3- Then 1 mole of AgNO3 corresponds to 1 mole of chloride. The titrant concentration is generally 0.1M. The results are expressed as a % of salt (NaCl with a molecular weight of 58.453 g/mol). Results for three determinations on salted butter, generally expressed as a % of sodium chloride ion (MW = 58.453 g/mol) Mean: 1.995% Standard deviation: 0.0018% Rel. standard deviation: 0.09% (Butter with a salt content of 2%)  Results for three determinations on butter (with a 10 ml burette), generally expressed as a % of sodium chloride ion (MW = 58.453 g/mol) Mean: 0.036% Standard deviation: 0.0003% Rel. standard deviation: 0.8%

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Acidity of Cheese The acidity of cheese is determined by end point titration using 0.1 eq/l NaOH. The end point value is generally fixed at pH 8.4 and the result is expressed in % of lactic acid, which has a MW of 90.08 g/mol. Results for 5 determinations, expressed as % of lactic acid (CH3-CHOH-COOH with a MW of 90.08 g/mol) Mean: 0.97% Standard deviation: 0.01% Rel. standard deviation: 1%

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TitraLab 845 Technical Specifications

Methods
• End point titration: 1 to 2 preset end points.
• Inflection point titration: Auto determination of 1 to 4 inflection points, programmable IP acceptation windows.
• IP detection using 1st & 2nd derivative curve.
• Titration stops at: pH, mV, ml, IP number.
• Titrant addition techniques: incremental dynamic, incremental monotonic and continuous dynamic.
• Titrant calibration.
• pH electrode calibration: up to 5 points using IUPAC standards or 4-7-10 Series buffers with error recognition.
• Direct pH/mV measurements: with recording on stable reading.
• Back titration with manual (TIM840) or automatic (TIM845) reagent addition.
• Sequencing of up to 3 consecutive methods within a sample changer series.
• Coupling of 2 methods in one beaker.
 
Measuring Range
• -9 to 23 pH
• ±2000 mV
• -10°C to +100°C
 
Resolution
• 0.001 pH
• 0.1mV
• 0.1°C

TitraLab 845 Full Specification