Delft Solids Solutions is a testing laboratory for analysis of porous and nonporous solids, powders and gases. Specialised in: particle characterization, pore size distribution, porosity measurement, adsorption isotherm, BET surface area, particle size distribution, particle size analysis, surface characterization, chemical analysis, chemical composition, neutron activation analysis, dynamic light scattering, lab test, droplet size, elemental analysis, chemical laboratory.

<body> <h2 align="center"><a href="1.html">particle characterization</a> <a href="2.html">pore size distribution,</a> <a href="3.html">porosity measurement,</a> <a href="4.html">adsorption isotherm,</a> <a href="5.html">BET surface area,</a> <a href="6.html">particle size distribution,</a> <a href="7.html">particle size analysis,</a> <a href="8.html">surface characterization,</a> <a href="9.html">chemical analysis</a>, <a href="10.html">chemical   composition,</a> <a href="11.html">neutron activation analysis,</a> <a href="12.html">dynamic light scattering,</a> <a href="13.html">lab test,</a> <a href="14.html">droplet size,</a> <a href="15.html">elemental analysis,</a> <a href="16.html">chemical laboratory,</a> <a href="17.html">solids,laboratory</a></h2> <p> </p> <p><a href="http://www.solids-solutions.com/r-sizing.html">Sizing Particle and droplet size are basic features that influence the properties and performance of solids, emulsions and sprays.</a> Conductivity, flexibility, gloss, hardness, stability, strength and taste are some of the properties that can be influenced by particle size. Size and size distributions are important in various areas such as: atmospheric aerosol dispersion, ceramic and alloy properties, catalyst performance, crystal growth, contamination of soil and liquids, wastewater management, medicine and spray effectiveness, paint performance, emulsions stability and so on. Several light scattering and electrical techniques are available in our laboratory, as well as more conventional methods as sedimentation and microscopy. Disclaimer: Instrumental particle and droplet sizing techniques do not measure the geometrical size but give an equivalent spherical diameter depending on the technique </p> <p><a href="http://www.solids-solutions.com/r-composition.html">Composition Knowledge of the chemical composition of raw materials</a>, semi products, process streams and final products is essential for behavior, quality or for example health risk of each and every product or medium. Therefore man puts huge effort in trying to determine even the most untraceable elements. In particular for analysis of liquids and gases a wide variety of analyzers is available. Measuring the composition of solids without destruction appeared to be difficult. Apart from the traditional semi quantitative method of X-ray fluorescence, currently the more accurate and more 'multi-component' Instrumental Neutron Activation Analysis is available </p> <p><a href="http://www.solids-solutions.com/r-analyses.html">Analysis Sample analysis can be requested on this site</a>. Please fill in the appropriate analysis request form below and submit it to us. A copy of the form should be signed and enclosed with the samples for dispatch. Make sure the samples are well packed to prevent damage during transport. The postal address is given below: Delft Solids Solutions B.V. Kluyverweg 2A Innovation Centre 2629 HT Delft The Netherlands Delft Solids Solutions B.V. (not for delivery services) PO Box 1038 2600 BA Delft The Netherlands A customs declaration is required for samples from outside the European Union. For countries inside the European Union, a declaration is recommended. Templates of the customs declaration are available on this site. Should there be any questions concerning the sample dispatch or analysis, please do not hesitate to contact us. <mailto:info@solids-solutions.com> </p> <p><a href="http://www.solids-solutions.com/r-contact.html">How to contact us Delft Solids Solutions cooperates with partners such as the Delft University of Technology and employs academically educated and scientific experienced specialists who earned their well respected place in the Dutch scientific world (see our publications </a>- item references). visiting address postal address Delft Solids Solutions B.V. Kluyverweg 2A Innovation Centre 2629 HT Delft The Netherlands (not for delivery services) Delft Solids Solutions B.V. PO Box 1038 2600 BA Delft The Netherlands Phone: +31 (0) 15 26 825 16 Fax: +31 (0) 15 26 825 30 If you have any questions about our company, analyses we provide or any other observations, feel free to contact us. <mailto:info@solids-solutions.com> E-mail is merely meant for business to business information exchange. For information about instruments and techniques, please consult the manufacturers and relevant books. Appropriate contact addresses and literature are available on our website. </p> <p><a href="http://www.solids-solutions.com/r-light-scanning-techniques.html">light scanning techniques</a> </p> <p><a href="http://www.solids-solutions.com/r-photon-correlation-spectroscopy.html">Photon Correlation Spectroscopy </a>In photon correlation spectroscopy (PCS) or quasi-elastic light scattering (QELS) the Brownian motion (movement in random direction) of sub-micron particles is measured as a function of time. A laser beam is diffracted by particles in suspension. The diffusion of particles causes rapid fluctuations in scattering intensity around a mean value at a certain angle (varying from 10 to 90°). These intensity fluctuations depend on particle size. The calculated correlation function results in a diffusion coefficient for a given temperature and viscosity which can be converted to particle size. The technique is used for determination of average particle size in a range between 3 and 3000 nm. The measurements are performed on a Coulter N4 or an ALV 5000. The report consists of a table with average and mode effective hydrodynamic diameter and polydispersity index, which is a measure for the width of the distribution.</p> <p><a href="http://www.solids-solutions.com/r-eletrical-senzing-zone.html">Electrical sensing zone </a>In electrical sensing zone an electrolyte solution is used to disperse particles. A tube with a narrow aperture is submerged in the solution and two electrodes are placed on both sides of the aperture. Electrolyte and particles travel through the aperture and the resistance proportional to the particle volume is measured. Each individual particle is counted and categorized in the appropriate size class. The technique is used for characterizing and counting narrow distributions within the range of 0.6 to 1200 µm. Particles in low concentration solutions, powders and biological material can be analyzed. The measurements are performed on a Coulter Multisizer II. The report consists of a graph showing the cumulative and differential volume or number distributions and statistics as the mode, mean and median diameter, skew ness and kurtosis, standard deviation etc.</p> <p><a href="http://www.solids-solutions.com/r-SEM-scanning-electron-microsopy.html">Scanning electron microscopy</a> In scanning electron microscopy (SEM) a source of electrons is focused into a fine probe that is rastered over the surface of the specimen. The sample is coated with a thin gold layer and bombarded with electrons to visualize the surface, which is constantly scanned and reconstructed. A detector collects a part of the emitted electrons and an image is built by signal modulation and amplification which looks just like the object. Magnifications up to 20.000 times can be used. The technique is often used when visualization of a sample is required in order to detect size and shape effects or to create a better understanding of the material behavior. The measurements are performed on a Philips SEM XL20; the report consists of pictures and a brief evaluation of the analysis.</p> <p><a href="http://www.solids-solutions.com/r-gravitational-sedimentation.html">Gravitational sedimentation </a>In gravitational sedimentation (originally the pipette method) the settling rate of particles in liquid is measured and related to the mass by use of the Stokes law. Nowadays the settling rate is determined by measuring x-ray transmission in the liquid at specific heights and time intervals and a size distribution based on difference in mass is calculated. The technique is suitable for any material containing elements with Z > 12 and is popular for determination of clay fractions in soil samples. The sizing range, determined by laminar flow, is from 1 to 300 µm. The measurements are performed on a Micromeritics Sedigraph 5100 and the report consists of a graph showing the cumulative and differential mass distribution and statistics as the mode, mean and median diameter, standard deviation etc. </p> <p><a href="http://www.solids-solutions.com/r-phase-doppler-velocimetry.html">Phase Doppler Velocimetry </a>In laser Doppler velocimetry particles are radiated by two laser beams and the phase shift of the scattered light signals is measured. Two laser beams are split into four beams of equal intensity. The beams are focused and made to intersect. The scattered light from particles passing through the beams at their intersection is mixed at the photo detector surface and gives a difference signal. Since the rays enter the particle at different angles, the optical paths to a common arbitrary point on the detector differ; the light waves are shifted relatively to each other. Two detectors allow determination of particle size. The technique is used for determination of droplet size and velocity distribution in sprays and nozzles from 0.5 to 90 µm. The measurements are performed on a TSI Phase Doppler Particle Analyzer and the report consists of size and velocity distribution results. </p> <p><a href="http://www.solids-solutions.com/r-laser-diffration.html">Laser diffraction </a>In laser diffraction (static light scattering) the scattering pattern, obtained from illumination of dispersed particles with a laser beam, contains information about particle size. The interaction between particles and light is mainly dependent on particle size, shape, surface roughness and refractive indices of material and dispersing medium. For a specific material, the scattering pattern of a particle is unique for its size. Deconvolution of the sample scattering pattern with an optical model such as Mie or Fraunhofer results in the particle size distribution. The technique is especially applicable to samples with a broad or bimodal distribution and for information on size trends in series of samples. Materials can be characterized in the range of 0.04 to 2000 µm and dispersion can be made in water, organic liquid as well as air. The measurements are performed on a Malvern Mastersizer, Coulter LS 230 or a Cilas 1064. The report consists of a graph showing the cumulative and differential volume distributions and statistics as the mode, mean and median diameter, skewness and kurtosis, standard deviation etc.</p> <p><a href="http://www.solids-solutions.com/r-sieve-analysis.html">Sieve analysis</a> In sieve analysis a powder is separated into specified size fractions. Both mechanical sieving and sonic sieving are available. The separation range is from 37 µm to 10 mm. The measurements are performed on ATM, Retsch or Stork Veco sieves. The results are given in sieve fractions and cumulative mass distribution. </p> <p><a href="http://www.solids-solutions.com/porosity.html">http://www.solids-solutions.com/porosity.html</a> </p> <p><a href="http://www.solids-solutions.com/sizing.html">http://www.solids-solutions.com/sizing.html</a></p> <p><a href="http://www.solids-solutions.com/composition.html">http://www.solids-solutions.com/composition.html</a> </p> <p><a href="http://www.solids-solutions.com/analysis.html">http://www.solids-solutions.com/analysis.html</a> </p> <p><a href="http://www.solids-solutions.com/references.html">http://www.solids-solutions.com/references.html</a> </p> <p>particle characterization, pore size distribution, porosity measurement, adsorption isotherm, BET surface area, particle size distribution, particle size analysis, surface characterization, chemical analysis, chemical composition, neutron activation analysis, dynamic light scattering, lab test, droplet size, elemental analysis, chemical laboratory. </p> <p>Delft Solids Solutions is located in Delft and is a testing laboratory for measurement and analysis and characterization of porosity, pore size, pore size distribution, specific surface area, pore volume, particle size, particle size distribution, sprays, and chemical composition and chemical analysis of solid materials (solids), liquids and gases. The analysis of the texture of solid materials and porosity of solid samples is determined by different surface science techniques and surface characterization techniques, as physical gas adsorption, chemical gas adsorption, mercury intrusion porosimetry and helium pycnometry. Surface characterization is an important tool to predict the behaviour of catalysts and adsorbents and medicines. Porosity of powders and porous solids can be measured by different techniques based on adsorption of inert gases. The porosity in powder and the porosity in porous solids are analyzed in the same way as porosity measurement in porous materials. Instruments: </p> <p> </p> <p><small><small>The following instruments are at our disposal: Surface Area and Porosity of Solids Quantachrome Autosorb-6B analyzers (2) / N2 adsorption Quantachrome Autosorb-1C analyzers (2) / CO or H2 chemisorption Quantachrome PentaPycnometer / He density Quantachrome NOVA 1200 analyzers (2) / CO2 adsorption Quantachrome Autosorb degassers (3) / vacuum pre-treatment Quantachrome NOVA flow degasser / Flow pre-treatment Micromeritics ASAP 2010 analyzers (2) / Low-pressure Ar adsorption or Kr Qsurf M3 / N2 adsorption flow CE Instruments Pascal 140 porosimeter / Low-pressure mercury intrusion CE Instruments Pascal 440 porosimeter / High-pressure mercury intrusion Particle Size of Solids Coulter LS230 / Forward light scattering + PIDS Malvern Mastersizer S / Forward light scattering Cilas 1064 / Forward light scattering Malvern 2600 / Forward light scattering Coulter N4 / Dynamic light scattering (PCS) ALV 5000/ Static and dynamic light scattering (PCS) Coulter Counter / Electrical sensing zone Micromeritics Sedigraph / Sedimentation PCO ccd imaging / Image Analysis Philips XL 20 / Scanning electron microscopy Particle Size of Sprays and Aerosols TSI PDPA / Phase Doppler velocimetry ..and more coming soon Chemical composition of gases VG Prima 600 / Mass Spectrometry Siemens SESAM 1 / FTIR Siemens MIPAN / Microwave spectrometry Chemical composition of solids Philips PW 1400 spectrometer / X-Ray Fluorescence HOR / Instrumental Neutron Activation Analysis PerkinElmer DSC7 / Differential Scanning Calorimetry PerkinElmer TGA7 / Thermogravimetry Porosity N2 Physical Gas Adsorption at 77 K (Flow Technique) Single point BET (0.30 p/p0) Multi-point BET (0.05-0.10-0.15-0.20-0.25 p/p0) Total pore volume (0.99 p/p0) 100 150 125 N2 Physical Gas Adsorption at 77 K (Volumetric Technique) Single point BET (0.30 p/p0) Multi-point BET (0.05-0.10-0.15-0.20-0.25 p/p0) Multi-point BET + pore volume (0.99 p/p0) 150 200 250 Adsorption isotherm, multi-point BET, total pore volume, BJH adsorption pore size distribution (2-200 nm) 375 Adsorption and desorption isotherm, multi-point BET, total pore volume, BJH desorption pore size distribution (2-200 nm) 400 Ar Low Pressure Physical Gas Adsorption at 87 K (Volumetric Technique) Adsorption isotherm (10-6 0.3 p/p0), SF micropore size distribution 0.5 2 nm 550 CO2 Physical Gas Adsorption (Volumetric Technique) Adsorption and desorption isotherm, micropore surface area and micropore volume (Dubinin-Radushkevic) 400 Kr Physical Gas Adsorption (Volumetric Technique) Multi-point BET (0.05-0.10-0.15-0.20-0.25 p/p0) 300 H2 or CO Chemical Gas Adsorption (Volumetric Technique) Dual adsorption isotherm (1-100 kPa), metal surface area, metal dispersion and average crystallite size 425 Mercury Intrusion Porosimetry Intrusion curve 0.1 400 MPa, porosity, apparent density, pore size distribution 4 nm 17 µm 275 Intrusion curve vacuum 0.1 MPa, porosity, apparent density, pore size distribution 17µm 120 µm 200 Intrusion curve vacuum 400 MPa, porosity, apparent density, pore size distribution 4 nm 120 µm 375 He Pycnometry Skeletal density 125 Sizing Laserdiffraction (dry, aqueous or organic fluid dispersion) Forward light scattering, size distribution 0.5 µm 2000 µm 275 Forward light scattering incl. backscattering information, size distribution 0.04 µm 2000 µm 300 Photon Correlation Spectroscopy (PCS) Particle size distribution 3 nm 3 µm 225 Phase Doppler Velocimetry Spray droplet velocity and size distribution 0.5 µm 90 µm p.o.a. Electrical Sensing Zone Coulter Counter narrow size distribution 0.6 µm 1200 µm 325 Scanning Electron Microscopy Surface and size scan incl. photographs 200 Image Analysis Distribution and size scan incl. photographs 200 Gravitational Sedimentation Sedigraph size distribution 1 µm 300 µm 200 Sieve Analysis Dry sieving, range 37 µm 1700 µm 150 Composition Microwave Spectrometry Gas sample analysis of 0.2 up to 2000 ppmv NH3 150 FTIR Spectroscopy Gas sample analysis of NO, NO2, H2O, NH3, SO2, SO3, p.o.a. Mass Spectrometry Mass spectrum from m/e 4 300 for identification Gas sample analysis on C3H6 150 150 Instrumental Neutron Activation Analysis (INAA) </small></small>Package A:<strong> F, Se 140 Package B: Al, Ba, Ca, Cl, Cu, Dy, Er, Ga, K, I, In, Mg, Mn, Na, Rh, Si, Ti, V 140 Package C: As, Au, Ba, Br, Ca, Cd, Ce, Cr, Fe, Ga, K, La, Mo, Na, Pd, Pt, Re, Sb, Sc, Sm, U, W, Yb, Zn 140 Package D: Ag, Ba, Ca, Ce, Cr, Co, Cs, Eu, Fe, Hf, Hg, Ir, Lu, Nd, Ni, Os, Rb, Sb, Sc, Se, Sn, Sr, Ta, Tb, Te, Th, Yb, Zn, Zr 140 Package E: As, Ba, Br, Cd, Co, Cr, Hg, Mo, Ni, Sb, Se, Sn, Zn 140</strong> X-Ray Fluorescence (XRF) 72 components in solids 130 Thermogravimetric analysis (TGA) TGA analysis 300 Differential Scanning Calorimetry (DSC) DSC analysis 300 p.o.a.="price" on application Priority Service: 40% surcharge Consultancy: 90,00 per hour <small><small>Publications J.C. Groen and L.A.A. Peffer, "Influence of dead space measurement on adsorption characteristics of microporous zeolites", The MicroReport, 3rd quarter 1997, Vol. 8, No. 3, p.8. J.C. Groen, M.C. Doorn, L.A.A. Peffer, in D.D. Do (Eds.), "MCM-41 and the BdB corrected Kelvin equation for accurate mesopore size distributions from gas adsorption data", Adsorpti. Sci. Technol., Proc. 2nd Pacific Basin Conference, Brisbane, Australia (2000) p. 229. J.C. Groen, J. Pérez-Ramírez, L.A.A. Peffer, "Different chemisorption methods applied to zeolite supported Pt-catalysts", in: A. Galarneau, F. Di Renzo, F. Fajula, J. Vedrine (Eds.), Zeolites and Mesoporous Materials at the Dawn of the 21st Century, Studies in Surface Science and Catalysis, Vol. 135, Elsevier, Amsterdam, 2001, 2862. J.C. Groen, J. Pérez-Ramírez, and L.A.A. Peffer, "Formation of uniform mesopores in zeolite ZSM-5 upon alkaline post-treatment?" Chem. Lett. 2002 94. J.C. Groen, J. Pérez-Ramírez, and L.A.A. Peffer, Comments on "Vanadium- and chromium-containing mesoporous MCM-41 molecular sieves with hierarchical structure", Micropor. Mesopor. Mater. 51 (2002) 75</small></small></p> <p><small><a href="http://www.nl-biz.nl">Websitepromotions</a> <a href="http://www.nl-bedrijf.nl">by</a> <a href="http://www.roswebdesign.nl">Roswebdesign</a> <a href="http://www.roswebsitepromotie.nl/sep">roswebsitepromotie</a></small></p> <p> </p> <hr> <p><a href="links.html"><small>porosity, catalyst, size, surface area, adsorption, physisorption, pore, chemisorption, BET, gas, nitrogen, mercury, desorption, intrusion, density,particle size, particle shape, size distribution, powder, spray, size characterization, size characterisation, droplet size, laser diffraction, sphere, aerosol, submicron, shape, nano particle, light scattering,composition, INAA, XRF, MS, TGA, solids, DSC, FTIR, multi, component, solids, liquids, elemental, element, gases, gas, analysis,determination, chemisorption, physisorption, gas adsorption, mercury intrusion, laser diffraction, PCS, QELS, Coulter counter, SEM, image analysis, mass spectrometry, FTIR, spectrometry, light scattering,skeletal, solids, solution, solutions, density, solid, skeletal density, apparent, pycnometry, helium, heliumpycnometry, true density, porosity, displacement, void, volume, analysis,Delft Solids Solutions, contact, analysis, characterization, laboratory, BET, particle, porosity, pore, size,laser diffraction, photon correlation spectroscopy, light scattering particle size analysis, PCS, brownian motion, QELS, droplet size droplet velocity, spray, particle shape, mie, fraunhofer, phase doppler powder,Size, Distribution, Powder, Spray, Aerosol, Light scattering, Particle, Sub-micron, Droplet, Emulsion, Shape, Diffraction, Diameter, Sphere, Trend,</small></a></p> </body>