pH values can be measured with the aid of electrochemical measurements and proton-sensitive electrodes (e.g. glass electrodes). By combining a glass electrode with a reference electrode in one housing, a single-rod glass electrode, which is appropriate for acid-base titrations, is created. The titration curves allow an exact determination of the equivalence point in titrations of strong and weak acids and bases.


  • Drop counter optimizes the experimental procedure
  • Simplified implementation: all pre-settings already prepared
  • Extensive automation of the experiment allows concentration on the learning objectives


  1. Determine the titration curves of different neutralisation reactions.
  2. Determine the titration curve of an ampholyte (glycine).
  3. Determine the buffering capacity of various aqueous acetic acid/sodium acetate mixtures at different total concentrations.

What you can learn about

  • Strong and weak electrolytes
  • Hydrolysis
  • Dissociation of water
  • Amphoteric electrolytes
  • Isoelectric point
  • Law of mass action
  • Indicators
  • Glass electrode
  • Activity coefficient
  • Buffering capacity
  • Henderson-Hasselbalch equation

Necessary accessories

  • Precision balance 6200g/0.01g

Software provided. Computer not included.


Scope of Supply
Device NameItem no.Qty
curricuLAB measureLAB, multi-user license14580-611,00
Buffer solution, pH 4.62 100030280-701,00
Beaker, Borosilicate, tall form, 100 ml46026-001,00
Retort stand, h = 750 mm37694-001,00
Volumetric pipette, 25 ml36580-005,00
Sodium acetate, anhydr. 2531612-251,00
Acetic acid, 1 M sol., 100048127-701,00
Holder for sensors with support rod12680-002,00
Rubber caps, 10 pcs39275-031,00
Volumetric flask 1000ml, IGJ24/2936552-004,00
Funnel, glass, top dia. 80 mm34459-003,00
Buffer solution, pH 9 100030289-701,00
Beaker, Borosilicate, tall form, 250 ml46027-001,00
Right angle boss-head clamp37697-003,00
Volumetric pipette, 50 ml36581-005,00
Spoon, special steel33398-001,00
Caustic soda solution, 1.0 m,48329-701,00
Immersion probe NiCr-Ni, teflon, 300 °C13615-051,00
Weighing dishes, square shape, 84 x 84 x 24 mm, 25 pcs.45019-251,00
Graduated pipette, 1 ml36595-001,00
Volumetric pipette, 1 ml36575-001,00
Magnetic stirrer without heating, 3 ltr., 230 V35761-991,00
Water, distilled 5 l31246-812,00
Cobra4 Sensor-Unit Chemistry12630-001,00
Universal clamp37715-001,00
Pipette dish36589-001,00
Volumetric flask 250 ml, IGJ14/2336550-007,00
Wash bottle, plastic, 500 ml33931-001,00
Hydrochloric acid, 1.0 mol/l,48454-701,00
Ortho-phosphoric acid 85% 25030190-251,00
Beaker, Borosilicate, tall form, 50 ml46025-003,00
Graduated pipette 10 ml36600-001,00
Volumetric pipette, 2 ml36576-001,00
Beaker, DURAN®, tall form, 150 ml36003-0016,00
Glycocoll /glycine/ 1031341-101,00
Magnetic stirring bar 30 mm, cylindrical46299-021,00
Burette clamp, roller mount., 2 pl.37720-001,00
Pasteur pipettes, 250 pcs36590-001,00
Volumetric flask 500 ml, IGJ19/2636551-001,00
Funnel, glass, top dia. 50 mm34457-002,00
pH-electrode, plastic body, gel, BNC46265-151,00

Downloads and Documents

Document  Filesize
p3061660e.pdfExperiment guide, English925.77 KB