Density Meter for Manual Sample Supply

A.KRÜSS density meters use the U-tube oscillator method and enable simple, fast and precise measurements of all flowable media. Due to the small footprint, an intelligent user interface as well as the conformity with many standards, our density meters are optimally tailored to a modern laboratory world.

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Density meters for manual sample supply

The right decision for low sample volumes

For manual sample delivery via syringe, we offer two different density meter sets: For low sample volumes and high viscosity samples, we recommend Set 1 and for highly viscous and aggressive samples Set 2. While the sample is added, you can check for air bubbles by looking through the inspection glass. A suitable medium is injected for the cleaning until all sample residues have been dissolved and removed. The drying unit will then remove all liquid residues.

  • Sample supply and cleaning via syringe
  • Intuitive operation via touch-screen display
  • Easy, menu-driven adjustment
  • Pre-defined scales such as density, relative density, brix, alcohol and sulfuric acid concentration
  • Compliance with GMP/GLP, 21 CFR Part 11, pharmakopoeias (USP, BP, JP, Ph. Eur.), FDA, ISO, HACCP, OIML, ASTM, ICUMSA, NIST

 

Typical applications

A comprehensive quality assurance covering the entire production
process is a must in any industrial sector. Density measurements are
frequently used for this purpose, especially in the pharmaceutical,
chemical, petrochemical as well as the food and beverage industry.
They allow the manufacturer to analyse raw materials, semi-finished
and finished products as well as the manufacturing steps in terms of a
number of factors.

Density can be used to identify substances, to determine their quality
or purity and to measure their concentration in binary or quasi-binary
mixtures. Substance conversions and reaction dynamics can also be
inferred from it. In combination with other methods such as
refractometry that measures the refractive index of substances, the
density measurement allows you to make precise statements about
the quality of each step of the production process.

Density meters based on the oscillating U-tube method are
characterized by high ease of use and are therefore used in particular
for continuous density measurement and for rapid routine
measurements with larger numbers of samples in laboratories.

More information about typical applications of density meters can be
found in our campus article about density meters Fields of application.

 

Model specifications

DS7700 DS7800
MEASUREMENT DATA
SCALES Density [g/cm³]
Relative Density
Brix [%Brix]
Concentration of alcohol [vol%]
Concentration of sulphuric acid [wt%]
User-defined
MEASUREMENT RANGE 0–3 g/cm³
MEASUREMENT ACCURACY ±0.001 g/cm³ ±0.0001 g/cm³
MEASUREMENT PERIOD Typically: 1–3 minutes including temperature control
SAMPLE VOLUME IN CASE OF MANUAL INJECTION 0.9 ml
AMBIENT TEMPERATURE 10–40 °C
TEMPERATURE RANGE 10–40 °C
ACCURACY OF TEMPERATURE CONTROL ±0.02 °C
METHODS A practically unlimited number of methods can be set
ADJUSTMENT Automatic (menu-driven), with dried air and distilled water
CONTENT SET 1
DS7700-1
DS7800-1
Drying unit with 2/2-way valve
Tygon tube set for use with Luer syringe: Air tube, waste tube, tube connections Luer
Luer nozzle
Luer syringes
PE waste container with lid
CONTENT SET 2
DS7700-2
DS7800-2
Drying unit with 2/2-way valve
Tygon tube set for use with Luer syringe: Air tube, waste tube, tube connections Luer
PTFE tube set for use with Luer syringe: Drain tube, waste tube, PEEK hollow screws
PTFE splash guard
Adaptor Olive/UNFa for sample discharge through Tygon tube via UNF nozzle
Luer, UNF nozzle
Luer syringes
PE waste container with lid

 


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