Ceramics
At the RMS Foundation we can offer you the following services in the area of ceramic testing:
Please also note the following services from other categories
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Mechanical testings: Product damage analyses
Bundle analyses for product registration of bone graft substitutes
| Description: | Our analysis packages include all chemical, physical and morphological analyses required for the preclinical characterization of bone graft substitute products according to international standards in a single attractive package. Depending on the product composition, we offer packages for product registration on the European market according to the MDR or on the US market according to FDA guidelines. Further information is provided on our information sheets.
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Contact: Christoph Stähli +41 32 644-2044 E-mail
Cohesion of pastes and cements
| Description: | In a specially developed test setup, we measure the cohesion of pastes and cements in an aqueous environment. The result provides information on how quickly a paste dissolves or disintegrates in water. The test takes place at room temperature and is suitable for paste volumes from 0.5 to 10 mL. |
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| Equipment: | Precision scale Mettler-Toledo PR5002 |
Contact: Nicola Döbelin +41 32 644-2041 E-mail
Identification and quantification of ceramic solution products
| Description: | In this test, the soluble fractions of ceramic products are determined according to ISO 10993-14. |
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| Equipment: | Climatic chamber Feutron KPK 200 / Shaking table GFL Type 3017 / Agilent 7700x ICP MS |
Contact: Ronny Wirz +41 32 644-2052 E-mail
Identification and quantification of crystalline phases (XRD)
| Description: | Qualitative identification of crystalline phases in ceramic and metallic materials is performed by matching an X-ray diffraction (XRD) pattern with a crystal structure database. Identified phases are quantified using Rietveld refinement. Depending on the complexity of the diffractogram, phases with a content of down to one percent by weight can be identified. |
| Standard(s): | Not accredited |
| Newsletter: | X-ray Diffraction (XRD): Quantitative Analysis of Phase Compositions (NL-23) |
| Equipment: | Bruker D8 Advance diffractometer with CuKα radiation and LynxEye XE energy dispersive linear detector / Profex Rietveld refinement program |
Contact: Nicola Döbelin +41 32 644-2041 E-mail
Phase purity of β-tricalcium phosphate and hydroxyapatite
| Description: | X-ray diffraction (XRD) is used to quantitatively determine the phase purity of β-tricalcium phosphate bone substitute materials. The evaluation by Rietveld refinement corresponds to the latest state of the art and is carried out according to ASTM F1088, ISO 13175-3 and ISO 13779-3. |
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| Equipment: | Bruker D8 Advance diffractometer with CuKα radiation and LynxEye XE energy dispersive linear detector / current ICDD PDF-4+ structure database / BGMN and Profex Rietveld refinement programs |
Contact: Nicola Döbelin +41 32 644-2041 E-mail
Trace element analysis of calcium phosphates (ISO 13175-3, ASTM F1088, F1185 and F1581)
| Description: | Calcium phosphate bone substitutes are tested for heavy metals and other impurities by inductively coupled plasma mass spectrometry (ICP-MS). The analysis provides the levels of As, Cd, Hg, Pb, Bi, Sb, Sn, Ag, Cu, Mo, Fe, and Cr, and at the same time provides an «element screening» of 50 additional foreign elements, according to the maximum allowable values as specified in ISO 13175-3, ASTM F1088, F1185, and F1581. |
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| Equipment: | Agilent 7700x ICP-MS |
Contact: Christoph Stähli +41 32 644-2044 E-mail
Dissolution test on calcium phosphates (ISO 13175-3)
| Description: | The dissolution properties of resorbable bone substitute materials made of calcium phosphate are determined in an in vitro dissolution test according to ISO 13175-3. For this purpose, changes in pH and the release of Ca in the incubation solution are recorded. |
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| Equipment: | Temperature-controlled incubation shaker IKA™ KS 4000i / Agilent 7700x ICP-MS / Mettler Toledo MA235 pH meter |
Contact: Christoph Stähli +41 32 644-2044 E-mail
Dissolution rate of calcium phosphates
| Description: | Incubation of a sample for 24h in a buffer solution (MES or TRIS) at 37 °C. Continuous measurement of the Ca concentration by means of a Ca-ion-selective electrode. pH determination of the solution at the beginning and at the end of the test. Recommended: tests carried out in parallel on a historical control or a certified reference material. |
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| Equipment: | Polymer membrane Ca ion-selective electrode (Metrohm Titrando) / pH electrodes |
Contact: Christoph Stähli +41 32 644-2044 E-mail
Solubility product of calcium phosphates
| Description: | Incubation of a sample for 60 days in diluted phosphoric acid. Subsequent measurement of the pH value and the Ca and P concentrations by means of inductively coupled plasma mass spectrometry (ICP-MS). Calculation of KSP according to ISO 13779-6 (Annex A.8). Recommended: parallel tests on a certified reference material (e.g. NIST calcium hydroxyapatite, SRM 2910). |
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| Equipment: | IKA (KS 4000 i control) incubator shaker / pH electrodes / Agilent 7700x ICP-MS |
Contact: Christoph Stähli +41 32 644-2044 E-mail
Determination of the tap density on ceramic powders
| Description: | The mass of a known volume of powder is determined after the powder is filled free-falling into a fixed container and then rapped under specified conditions until the saturation density is reached. Dividing this mass by the volume of the container gives the rapping density of the powder.
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Contact: Fabrizio Bigolin +41 32 644-2023 E-mail
Determination of the bulk density of ceramic powders
| Description: | The mass of a known volume of powder is determined after the powder is filled into a stationary container while falling freely and avoiding vibrations. The test mass divided by the powder volume after testing gives the bulk density of the powder.
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Contact: Fabrizio Bigolin +41 32 644-2023 E-mail