Density Meters for manual sample supply. The right decision for low sample volumes.
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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
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.
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)
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.
Melting Point Meter for Semi-Automatic Measurements. The M3000 provides fast and easy examination of powdery substances with a melting point up to 360°C.
Melting point meter for automatic measurements. The M5000 provides fast, easy and automatic examination of powdery substances with a melting point up to 400 °C.
Density meters for manual sample supply Set 1 / Set 2. The right decision for low sample volumes.
Density meters for semi-automatic sample supply Set 3. High efficiency and special suitability for hazardous substances.
Density Meters DS7800 for Full-Automatic Sample Supply(Set 4 / Set 5). Fully automatic execution of the entire measuring process.
Digital Refractometers without Temperature Control. Specialists for sugar containing solution.
Digital Refractometers with Peltier Temperature Control. Allrounder for measuring all liquid and pastes.
Digital Refractometers with Automation. An optional solution for high sample volume.
Abbe Refractometer Analog(AR4) – Refractive index and % Brix can be measured and read via an eyepiece.