Automated tap density analyzers
The apparent bulk densities of powdered, granular of flaked materials are highly dependent on the manner in which the particles are packed together due to cohesion and shape effects. Furthermore, handling or vibration of particulate material causes the smaller particles to work their way into the spaces between the larger particles. The geometric space occupied by the powder decreases and its density increases.
Ultimately, no further natural particle packing takes place without the addition of pressure and maximum particle packing is achieved. Under controlled conditions of tapping rate, tap force drop and cylinder diameter, this condition of maximum packing efficiency is highly reproducible. Tap density measurement is formalized in a number of international standards to which both Autotap models conform.
The Autotap and Dual Autotap tapped density analyzers for powders are simple to use, automated devices which comply with a large number of internationally recognized standard methods. They provide a high level of test method control with a user-selectable, lockable number of taps. Tapping rate and drop height are fixed to provide consistent results from sample to sample. A large range of sample sizes can be accommodated with the use of a number of different graduated cylinder sizes. Single and dual station designs are available to fit your lab’s throughput needs.
Standards Suitability
ASTM B527 (metallic powders)
ASTM D4164 (formed catalysts)
ASTM D4781 (fine catalysts)
IDF 134 (dried milk)
ISO 787-11(pigments)
ISO 3953(metallic powders)
ISO 8460 (instant coffee)
ISO 8967(dried milk)
ISO 9161(uranium dioxide powder)
JIS K5101-12-2 (pigments)
JIS Z 2512(metallic powders)
MPIF 46(metal powders)
USP<616>method II
(preharmonization) (pharmaceutical powders)
USP<616>method I
(harmonized) (pharmaceutical powders)
JP 3.01 Part 2 Method 1
(harmonized) (pharmaceutical powders)
PH. EUR. 6.8 Method 1
(harmonized) (pharmaceutical powders)
Noise Reduction Cabinet
A sound-insulated enclosure is available that accommodates either Autotap model. The noise from tapping can be reduced by up to 15 dBA (actual improvement depends on local factors such as bench material and ceiling height). The doors can be locked for added safety and security.
| Model | Autotap | Dual Autotap 2 |
| Stations | 1 | 2 |
| Graduated cylinders | 1 x 250 cm³ | 2 x 250 cm³ |
| Graduated cylinder sizes | 5 cm3 to 500 cm3 (standard) |
| Drop height | 3 mm (0.125 in) | |
| Tapping rate | 260 per min | |
| Platform rotation | Automatic | |
| Physical | |
| Dimensions (H x W x D) | 175 mm* x 540 mm x 280 mm |
| Weight | 11 kg | 14 kg |
| *excluding cylinders | |
| | |
To get information about: «Autotap and Dual Autotap» contact us by phone (044) 229 15 31 or fill in the form.