Density meters for manual sample supply

Set 1 / Set 2

Density meter DS7800 with manual sample feed

Density meter DS7800 with manual sample feed

Key features
Applications
Standards
Samples
Key features

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
Applications

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

Standards

Compliance with national and international standards

A big advantage of normalized measurements is the comparability of the measurement results. Many international standards and guidelines recommend density meters for specific measuring tasks as suitable measuring instruments. The requirements for the measuring devices, such as measuring accuracy and measuring temperature, are dependent on the respective measuring task and defined in each standard. We have compiled for you an overview of all known standards and guidelines, which refer to the density measurement.

  • American Society for Testing and Materials (ASTM)
  • Hazard Analysis and Critical Control Points (HACCP)
  • International Organization of Legal Metrology (OIML)
  • National Institute of Standards and Technology (NIST)
  • International Commission on Uniform Methods of Sugar Analysis (ICUMSA)
  • European Pharmacopoeia (Ph. Eur.)
  • United States Pharmacopeia (USP)

 

A PDF overview of these standards is available for download at the following link:

Density Meters Standards (PDF, 206 KB)

Any questions?

Get in contact with us, we will assist you in choosing the right density meter for you.

Samples

Density measurement of liquids, emulsions and pastes

Thanks to the chemical-resistant sample carrying parts made of borosilicate glass and PTFE, our density meters are suitable for almost all liquids, emulsions and pastes.

The sample is administered manually via syringe, semi-automatically via peristaltic pump or fully automatically via autosampler. High-viscosity samples are usually supplied by syringe, low to light viscous can also be supplied by means of peristaltic pump and autosampler. For every method of operation and every kind of sample, we have suitable density meter sets available that contain all the necessary accessories, from tubing sets to filling spouts and adapters to splash guards for the manual supply of aggressive substances.

In the following table we have compiled an overview of typical samples from our customers. Most samples were measured with an accuracy of 3 decimal places and at 20 ° C, deviations are indicated. The listed readings are not specifications.

Samples Density (PDF, 142 KB)

Any questions?
Get in contact with us, we will gladly assist you in selecting a suitable density meter for you.

Model specifications

 DS7700DS7800
MAIN SPECIFICATIONS
SCALESDensity [g/cm³]
Relative Density
Brix [%Brix]
Concentration of alcohol [vol%]
Concentration of sulphuric acid [wt%]
User-defined
MEASUREMENT RANGE0–3 g/cm³
ACCURACY±0.001 g/cm³±0.0001 g/cm³
MEASUREMENT PERIODTypically 1–3 minutes including temperature control
SAMPLE VOLUME IN CASE OF MANUAL INJECTION0.9 ml
AMBIENT TEMPERATURE10–40 °C
TEMPERATURE RANGE10–40 °C
ACCURACY OF TEMPERATURE CONTROL±0.02 °C
METHODSA practically unlimited number of methods can be set
ADJUSTMENTAutomatic (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

A strong performance package

A.KRÜSS density meters set new standards in many respects. They deliver fast and reliable measurements, intuitive operation, seamless data logging, flexible data export and compliance with global standards. These and many more features make for a comfortable user experience.

 

Intuitive operation

  • State-of-the-art touch-screen display
  • Uniform operation of all A.KRÜSS laboratory devices
  • Secondary scale for displaying a second measured value
  • Freely assignable shortcut keys for the most important functions
  • Easy, menu-driven adjustment
  • A selection of six languages (de, en, es, fr, it, pt)
 

Fast reliable measurement

  • Drying unit with regenerable silica gel for a highprecision adjustment
  • Efficient Peltier temperature control
  • Measurement with manual measurement time input or optimised measurement time thanks to automatic stability recognition
  • Preview of measured values updated every second
 

Easy filling and cleaning

  • Sample supply via syringe, peristaltic pump or autosampler
  • Including drop collector, splash guard optional
  • Reliable filling check via inspection glass
  • Chemical-resistant materials
  • Freely configurable cleaning procedures
  • Semi-automatic or fully automatic drying
 

Unlimited number of methods

  • Create any number of methods and analyse each sample using the desired parameters
  • Method parameters: scales, temperature, sample supply, limit values, comment and many more
  • Measurement modes: single, continuous or interval measurement
  • Predefined scales (density, relative density, Brix, concentration of alcohol and sulphuric acid)
  • Any number of freely definable scales with conversions based on tables or formulas
 

Inteligent unser administration

  • Can be activated or deactivated depending on the requirements
  • Two authorisation levels
  • Optional setup of user profiles
  • Customised settings for different users or work groups
 

Complete documentation of measured values

  • Complete recording of all measured data as well as system and method settings in a tamper-proof data storage
  • Documentation of all measured values of the last 999 measurements with consecutive numbering
 

Flexible data export

  • Print-out on serial ASCII printer
  • Print-out on network printer in PDF or GS format
  • Print-out as PDF on USB flash drive or to network share
  • Export in HTML or CSV format on USB flash drive or to network share
  • Can be connected to a keyboard, mouse, barcode scanner or external PC in order to use the KrüssLab software
  • Easy integration into existing networks (DHCP Client) or a LIMS
 

Denity meter solutions for any need

  • DS7700 with an accuracy of ±0.001 g/cm³ and
    DS7800 with an accuracy of ±0.0001 g/cm³
  • Set 1 for manual sample supply
  • Set 2 for manual sample supply, also of aggressive samples
  • Set 3 for semi-automatic sample supply
  • Set 4 for fully automatic sample supply
  • Set 5 for fully automatic sample supply, also of aggressive samples
 

Compliance with global standards

  • GMP/GLP
  • 21 CFR Part 11
  • Pharmacopoeias (USP, BP, JP, Ph. Eur.)
  • FDA, ISO, HACCP, OIML, ASTM, ICUMSA, NIST
 

Service

Our service is unbeatable

As a customer you are at the center of our service, and for your satisfaction we give our best every day. Quality is always our top priority. Whether commissioning, calibration, maintenance or repair: with our certified service and repair services, you can rely on the first-class expertise of our specialists.

Our certified services
 

Any Questions?

We will be glad to help.

+49 40 514 317-0

sales@kruess.com

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