DT-100/DT-110

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DT-100/DT-110

Particle size measurement of concentrated dispersions in their original state

DT-100 and DT-110 are particle size measuring devices that work on the basis of acoustic spectrometry or sound attenuation spectrometry (ISO 20998-1). In principle, the dispersion to be characterized between an ultrasonic sender and detector is measured in 180° transmission with regard to ultrasonic attenuation within a sound frequency spectrum of 1-100 MHz. The particle size distribution is then calculated from the measured attenuation spectrum.

A special feature of the DT acoustic spectrometers is the multigap technique, i.e. the spectrum is measured at several sender-detector distances in order to obtain more accurate measurement data and also to cover the widest possible concentration range (0.1 – 60 vol.%). DT-100/DT-110 are therefore predestined for characterizing originally concentrated suspensions, emulsions or even pastes.

DT-100 has a rigid measuring chamber that is resistant to almost all solvents and requires a minimum sample volume of 15 ml (in the case of a sample that is stable over the measuring cycle, i.e. no stirring or pumping is required). If the sample tends to destabilize, either the device’s integrated magnetic stirrer or, for higher viscosity systems, a peristaltic pump with a correspondingly larger sample volume (> 70 ml) can be used.

DT-110 is the small-volume version of the DT-100: equipped with a flexible silicone measuring cell that is easy to remove, it only requires a volume of approx. 5 ml for stable samples. The use of a peristaltic pump (volume approx. 20-25 ml) is also possible for unstable systems. In addition, the measuring cell is very easy to fill and clean and is therefore ideal for paste-like systems such as battery or color slurries.

Specifications/Features/Advantages

  • Particle size analyzer based on acoustic attenuation spectroscopy (ISO 20998-1)
  • Characterization of suspensions and emulsions; aqueous, polar and non-polar solvents
  • Extended measuring range: 1 nm – 1000 μm
  • Measurement of the undiluted, original sample (0.1 – 60 % by volume)
  • No calibration required
  • Frequency range: 1 to 100 MHz, variable transmitter-detector distance (multigap method)
  • Can be equipped with additional probes for temperature, pH, electrical conductivity and titration
  • DT-100: enables sample transport/movement with magnetic stirrer or peristaltic pump, minimum sample volume (stable dispersions) > 15 – 20 ml
  • DT-110: enables sample delivery/movement with magnetic stirrer or peristaltic pump, minimum sample volume (stable dispersions) > 3 ml
DT-100

Acoustic attenuation, Particle size

DT-110

Acoustic attenuation, Particle size

Measured and calculated parameters
Particle size [µm]0.001 – 1000 0.001 – 1000
pH0.5-13.5 ± 0.10.5-13.5 ± 0.1
Electric conductivity [S/m]110-11-101 ± 1% OP10-11-101 ± 1% OP
Temperature [°C]20-100 ± 0.1%0-100 ± 0.1%
Sound speed [m/sec]500-3000 ± 0.1%500-3000 ± 0.1%
Frequency range [MHz]1 – 1001 – 100
porosity [%]1-99 OP1-99 OP
Measurement time
For particle size [min]1 – 101 – 10
Sample requirements
Sample volume [ml]≥ 15≥ 5
Concentration [vol.-%]0.1 – 600.1 – 60
Temperature [°C]7 – 507 – 50
Viscosity of medium and colloid [cp]≤ 20000≤ 20000

1only in combination with DT-700

2 Temperature probe can measure up to 100°C, permissible dispersion temperature in the device ≥ 7°C and ≤ 50°C

Literature, 3P-Articles and Norms

/1/ ISO 20998-1 Measurement and characterization of particles by acoustic methods.
/2/ A. Dukhin, P. Goetz: Characterization of Liquids, Nano- and Microparticulates, and Porous Bodies using Ultrasound. 2nd Edition. Oxford: Elsevier, 2010.
/3/ Broschure DT Series: Particle size and zeta potential using acoustic and electroacoustic Spectrometry
/4/ PARTICLE WORLD 19; p. 18 – 19; “Characterization of liquids, dispersions, emulsions and porous materials using ultrasound”.

Accesories

Der Autotitrator passend zu DT-100/110/300/310/1202 und /1210 ist ein ideales Tool zur Bestimmung der Partikelgröße und/oder des Zetapotentials als Funktion des pH-Wertes oder einer definierten Menge Additiv. Er ist ausgestattet mit zwei Hochpräzisions-Titrationspumpen, die softwaregesteuert ein vorher definiertes Titrationsprotokoll durchführen. Es sind sowohl niedrig- als auch hochviskose (> 3000 cp) Titranten einsetzbar.

Titrator
  • Setting pH value curves or defined ml addition
  • Intelligent routine
  • Chemically resistant probe for low-viscosity dispersions and highly filled suspensions
  • Low and high viscosity titrants (>3000 cp)

This probe suitable for DT-100/110/300/310/330/1202 and /1210 is perfect for automatically measuring the electrical conductivity of aqueous liquids and dispersions. It is connected directly to the control box of the measuring device and controlled via its software (no stand-alone measuring device).

  • For aqueous systems in the range of 10 – 10-4 S/m electrical conductivity
  • Robust stainless-steel probe

This stand-alone measuring probe is perfectly suited for the automatic measurement of the electrical conductivity of organic liquids and dispersions. It is available as a stand-alone measuring device (DT-700).

Conductivity meter DT-700
  • For organic, liquid systems in the range of 10-4 – 10-11 S/m electrical conductivity
  • Robust stainless steel slit electrode with removable outer electrode for easy cleaning

This unit suitable for DT-100/110/1202/1210 consists of a manually operated peristaltic pump, lifting platform, tubing suitable for the suspension and three-way stopcock. It is ideally suited for particle size measurement of sedimenting or highly viscous samples, also in conjunction with titration experiments, to ensure optimum mixing.

  • For particle size measurement of sedimenting or higher viscous samples

This option suitable for DT-100/110/1202/1210 consists of either an oven (RT – 50°C) or refrigerator (approx. 7°C – RT) to measure the sample at the desired temperature (approx. 7° – 50°C) with regard to particle size distribution.

  • For temperature-dependent particle size measurement (ca. 7 – 50°C)

Other particle size measurement devices

DT-1202Acoustic attenuation spectroscopy 5 nm – 1,000 µm
Bettersizer S3 SerieLaser diffraction and dynamic image analysis 0.01 – 3,500 µm
Bettersizer 2600Laser diffraction 0.02 – 2,600 µm
Bettersizer STLaser diffraction 0.1 – 1,000 µm
BeNano SerieDynamic Light Scattering 0.3 nm – 15 µm
BeVision D2Dynamic image analysis 2 µm – 10,000 µm
Contact

Service hotline (Germany)
+49 8134 9324 0

Contact us via Email
info@3P-instruments.com