Dropping and Softening Point Instrument | METTLER TOLEDO
Dropping Point Apparatus

Dropping Point Apparatus

Excellence Instruments for Automatic Dropping Point and Softening Point Determination

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Automatic Dropping Point and Softening Point Instruments

Designed for simplicity and accuracy, METTLER TOLEDO's Dropping Point Excellence Systems facilitates the measurement of the dropping point or softe...

Designed for simplicity and accuracy, METTLER TOLEDO's Dropping Point Excellence Systems facilitates the measurement of the dropping point or softening point of pitch, asphalt, resins, and many more materials. Manual determinations can be performed automatically, and videos and results are stored on the instrument or can be exported to a network.

Furthermore, ensure full compliance with the relevant international and national standards and norms, such as ASTM D3461, IP 396, and more.


Dropping point apparatus
Dropping point instrument
Softening point apparatus
Dropping point apparatus
Dropping point apparatus

Products and Specs

 
Products and Specs
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Temp. Range
Number of One Clicks™
Application Type
Data Export
Material No.: 30578107
See details
Temp. RangeRT – 400°C
Number of One Clicks™12 Per User
Application TypeDropping Point; Softening Point
Data Exportto SD Card, USB Stick or PC
Material No.: 30578109
See details
Temp. Range-20 – 400°C (external cooling required)
Number of One Clicks™12 Per User
Application TypeDropping Point; Softening Point
Data Exportto SD Card, USB Stick or PC
Comparison

Documentation

Product Brochures

Brochure – Dropping Point Excellence
With the innovative METTLER TOLEDO dropping point systems, you can determine dropping and softening points of pitch, asphalt, polymers, resins, waxes...

Datasheets

Datasheet – DP70 Dropping Point System
Optimized for testing a variety of samples, the DP70 offers One Click™ dropping and softening points.
Datasheet – DP90 Dropping Point System
With DP90, dropping point and softening point determinations at sub-ambient temperatures are now possible.

FAQ

What is a digital dropping point apparatus?

A digital melting dropping instrument uses a furnace and video camera to automatically detect the drop point and softening point event.

This measurement is done digitally, reducing operator influence considerably. Two samples can be measured simultaneously with a temperature accuracy of down to 0.2 °C and short heating and cooling times.

The layout of the furnace and the video image analysis respectively allow two samples to be measured simultaneously.

METTLER TOLEDO Excellence Dropping Point System DP70 and DP90 work both as an automated dropping point apparatus and as an automated softening point apparatus.

digital dropping point apparatus
digital dropping point apparatus

How does a digital dropping point apparatus work?

A METTLER TOLEDO dropping point system is represented in the schematic diagram below.  

This system is a combination of a furnace and a video camera.

Dropping point and softening point is determined by heating the sample. The furnace is used to control the temperature during an analysis. Temperature control and temperature recording is guaranteed by a digital platinum temperature sensor.

In the Dropping Point Excellence instruments from METTLER TOLEDO, a white balanced LED light is shining on the test assembly, which consists of the cup and holder inside the furnace. The reflection image is recorded by a video camera.

For the automated dropping point determination, the entire drop point test is video-recorded and image analysis is used to detect the first drop that escapes the sample cup when it passes through a virtual white rectangle located underneath the cup orifice. While detecting this, the furnace temperature is measured and recorded at a resolution of 0.1 °C.

For the automated softening point determination, the leading edge of the softened sample is marked with a stepping line in the video. Once the stepping line has passed a virtual line that is located 19 mm below the cup orifice the corresponding furnace temperature is measured and recorded at a resolution of 0.1 °C.

Automated dropping point determination:

  • Online, video based digital image analysis used in the DP70 and DP90
  • Evaluation area: rectangle in top half of picture
  • Detection occurs when drop has passed through the rectangle

Automated softening point determination:

  • Online, video based digital image analysis used in the DP70 and DP90
  • Evaluation area: rectangular area including stepping line at 19 mm
  • Detection occurs when stepping line reaches defined distance

This is what is needed for fully automatic dropping point and softening point determination.

What are common samples to be tested with dropping point systems?

Dropping point testers are used to determine the dropping and softening points of ointments, synthetic and natural resins, rosins, edible fats, greases, waxes, fatty acid esters, pitch, asphalt, tars, bitumen, and many more materials.

How do I measure the dropping point correctly at sub-ambient temperature?

Edible oils, fats and organic solvents can be solidified and measured at low temperatures. Substances often need to be cooled or frozen for a sufficient amount of time prior to the dropping point measurement. The METTLER TOLEDO Excellence Dropping Point System DP90 performs dropping point measurements down to -20 °C. Place the separate DP90 measurement cell, the furnace and the optical detection system, in a refrigerator or a freezer till the required temperature is attained.

The following workflow is recommended for dropping point measurements below ambient temperature. Note that "cooling device" (CD) refers to a freezer or refrigerator.

Does the METTLER TOLEDO dropping point apparatus support me being compliant to regulations such as ASTM, AOCS, IP and ISO?

The METTLER TOLEDO dropping point instruments fully comply with the following standards for dropping point and softening point determination:

  • ASTM D3104 for automatic softening point determination of pitches
  • ASTM D3461 for automatic softening point determination of bitumen, pitch and asphalt
  • ASTM D3954 for automatic dropping point tests of waxes
  • ASTM D6090 for automatic softening point determination of resins
  • AOCS Cc 18-80 for automatic dropping point detection of edible fats and edible oils
  • European Pharmacopeia Ph.Eur. 2.2.17 for drop point
  • IP 396 for automatic dropping point detection of lubricating grease
  • ISO 4625 for softening point determination of paints and varnishes
  • DIN EN 51920 for softening point determination of carbonaceous material

The international standards ASTM D3104, ASTM D3461, ASTM D3954, ASTM D6090 and AOCS Cc 18-80 are specifically based on automatic dropping point and softening point determination on METTLER TOLEDO instruments.

Free Application Notes for Melting Point
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