We Can Help Solve \ b u r Materials Analysis Problems More R&D and QC labs around the world characterize the physical properties of materials using Micromeritics instruments than those of any other manufacturer. ÎT
Particle Size Distribution
Surface Area Analyzers: For applications requiring fast, accurate analyses. Measure specific surface area from 0.05 to 1,500 m2/g. Low cost, rugged and easy to operate. No calibration required, typically outgas and analyze two to five samples per hour. Surface area is automatically displayed in m 2 by a digital readout.
SediGraphs 5000D: Provides precise, fast and flexible particle size analysis from 0.1 to 100yum diameter. The Micromeritics SediGraph automates classical Stokes' sedimentation and permits a wide analyses range without liquid-liquid or liquid-surface interfaces and without easily-clogged, fragile orifices. The SediGraph accounts for all the sample present, even material outside the range of analysis. Data are automatically plotted as cumulative mass percent versus equivalent spherical diameter on an easily read graph. The analyzer operates unattended and yields results in minutes. The SediGraph can use tioth aqueous and organic liquids. Results are compatible with other sedimentation data.
Electrophoretic Mobility & Zeta Potential Zeta Potential Analyzer: Studies flocculation and dispersion; particle-liquid systems behavior; zeta potential. Easy accurate determination of particle mobility in liquid-particle systems to 50 volume percent solids. Zeta potential, the effective surface charge on the particles, is determined from the mobility measurement and the liquid dielectric constant. Measures colloids to particles about 1 mm diameter.
Pore Size, Volume Mercury Intrusion Porosimeters: Both manual and automatic models determine pore volume/pore size of porous, solid samples to 26mm dia X 28mm and to 15cc of powder. Measure intrusion volume to 1.8cc and pore size from 360 to 0.003/urn dia. Safe, completely hydraulic pressure systems. The Pore Sizer 9300 is a low-cost manually operated porosimeter which can measure pore size down to 0.006/um diameter. The AutoPore 9200 features completely automatic microcomputer controlled operation and data acquisition, reduction and printout.
Surface Area, Pore Structure & Chemisorption AccuSorb 2100E: The most accurate, versatile surface area and pore structure analyzer available. Measures specific surface areas from 0.001 m2/g up. Chemisorption capability available. Uses any noncorrosive gas or vapor as adsorbate. No calibration required. Simultaneously outgas four samples with built-in vacuum system and subsequently analyze these samples in sequence. Auto-ranging, digital readout of system pressure from 0.0001 to 1000.0 mm Hg.
Fast B.E.T. Surface Area
Density
DigiSorb 2500: Automatically measures adsorption and/or desorption isotherms and calculates pore size and surface area data. EVERYTHING except sample weighing is automatic. Analyzes up to five samples without reloading. Automatically outgasses additional samples for subsequent analysis. Operates 24 hours a day, 7 days a week and up to 4 days unattended. Automatic shut-down and restart routines protect the samples and data during temporary power failure. Surface area, isotherm, pore volume and pore size results are computed and then printed and plotted by a data terminal. Optional automatic chemisorption of H2 and CO on Pt-group metals and O2 on silver. ®
Helium Pycnometers: Measure the absolute volume of powdered or solid materials. Easily handle reactive or hygroscopic materials. Allows porosity determination when sample has a regular shape or known bulk volume. Both manual and automatic pycnometers require a dry sample for best results. The AutoPycnometer is microcomputer controlled to automatically calculate and read out the density. The manual pycnometers take 40 or 90cc maximum sample volumes while the AutoPycnometer accepts up to 10cc sample volumes.
Materials Analysis Lab Micromeritics offers a fully-equipped laboratory staffed with highly qualified particle technology personnel to aid customers in characterizing materials. Professional, confidential assistance is available on a contract basis.
micromeritics®
Micromeritics Instrument Corporation, 5680 Goshen Springs Road, Norcross, Georgia 30093. U.S.A. (404) 448-8282. CIRCLE 141 ON READER SERVICE CARD ANALYTICAL CHEMISTRY, VOL. 53, NO. 2, FEBRUARY 1981 · 249 A
