--- title: Final Polishing Suspensions url: https://www.buehler.com/ca/products/grinding-and-polishing/accessories-and-consumables/final-polishing-suspensions/ date: 2021-10-11T16:15:20+00:00 modified: 2025-03-06T15:44:11+00:00 lang: en_CA --- # Final Polishing Suspensions # Final Polishing Suspensions [![Final Polishing Suspension](https://buehler.com/ca/wp-content/uploads/sites/3/2024/02/Final-Polishing-Suspension.png)](https://buehler.com/ca/wp-content/uploads/sites/3/2024/02/Final-Polishing-Suspension.png) ## Excellent Surface Finish FOR YOUR NEEDS ### Final Polishing Suspensions and Powders ### Final Polishing Buehler’s premium final polishing suspensions and powders are formulated to deliver superior finish to your samples. Final polishing products are designed to remove the final layer of surface deformation and prepare your sample for analysis. Deformities may not be visible to the naked eye, but must be removed for some specimen analysis techniques. ##### Application Specific Solutions The material type dictates which final polishing powder or suspension is ideal. Choose from Buehler’s large portfolio of alumina and silica products that meet your fine polishing needs. [Shop Now](https://shop.opti-tech.ca/product-category/buehler-products/grinding-polishing/grinding-polishing-consumables/final-polishing-suspensions-and-powders/) ### Final Polishing Suspensions Buehler oxide suspensions are intended to be applied directly to polishing cloths with no mixing. No additions of extenders are required. #### MasterPrep® Alumina ![MasterPrep® Alumina](https://buehler.com/ca/wp-content/uploads/sites/3/2024/02/MasterPrep.png) MasterPrep Alumina is a finely dispersed aluminum oxide of 0.05µm nominal abrasive size in a basic (pH ~ 10.5) suspension. It contains seeded gel alumina, and it’s particle size distribution is more tightly controlled than any other type of alumina suspension available in the market. MasterPrep is capable of producing optically scratch-free surface finish on ferrous metals, copper alloys, low-melting point alloys, polymers and minerals. Pair MasterPrep with soft, napped cloth such as MicroCloth® polishing cloth for the best performance. #### MasterMet® Colloidal Silica ![MasterMet® Colloidal Silica](https://buehler.com/ca/wp-content/uploads/sites/3/2024/02/MasterMet-Colloidal-Silica-Suspension.png) Colloidal silica of 0.06µm nominal abrasive size in a basic (pH ~ 10.5) suspension, MasterMet provides a combination of mechanical and chemical polishing. This type of suspension is essential for fine polishing materials that form stable, passive films. These materials include aluminum alloys, refractory metals, silicon and ceramic. Pair MasterMet is ChemoMet® for the best performance except when manually polishing in which case MicroCloth® is most suitable. #### MasterMet® 2 Colloidal Silica ![MasterMet® 2 Colloidal Silica](https://buehler.com/ca/wp-content/uploads/sites/3/2024/02/MasterMet-2.png) A non-crystallizing, basic (pH ~ 11) silica suspension of nominal 0.02µm abrasive size, MasterMet 2 is applied for the same material types as MasterMet. MasterMet 2 is ideal anytime crystallization of silica due to extended air exposure is a concern. Similar to MasterMet, pair MasterMet 2 with ChemoMet® for the best performance except when manually polishing in which case MicroCloth® is most suitable. #### MasterPolish® Final Polish ![MasterPolish® Final Polish](https://buehler.com/ca/wp-content/uploads/sites/3/2024/02/MasterPolish.png) A non-crystallizing, basic (pH ~ 11) silica suspension of nominal 0.06µm abrasive size, MasterMet 2 is applied for the same material types as MasterMet. MasterMet 2 is ideal anytime crystallization of silica due to extended air exposure is a concern. Similar to MasterMet, pair MasterMet 2 with ChemoMet® for the best performance except when manually polishing in which case MicroCloth® is most suitable. #### MicroPolish® Alumina Suspension ![MicroPolish Alumina Suspension](https://buehler.com/ca/wp-content/uploads/sites/3/2024/08/0011103_micropolish-alumina-suspension-005m-6oz.jpg) Agglomerated alumina suspensions of 0.05µm, 0.3µm and 1µm sizes offer high removal rates and suitable for use on pure and alloyed lead and magnesium. #### MiroMet® Polish ![MiroMet Polish](https://buehler.com/ca/wp-content/uploads/sites/3/2024/08/0013159_miromet-polish-6oz.jpg) Agglomerated alumina suspensions of 0.05µm, 0.3µm and 1µm sizes offer high removal rates and suitable for use on pure and alloyed lead and magnesium. ### Final Polishing Powders Buehler’s alumina powders offer high removal rates on various materials and excellent surface finish for your sample. #### MicroPolish® Alumina Powder ![MicroPolish Alumina Suspension](https://buehler.com/ca/wp-content/uploads/sites/3/2024/08/0011103_micropolish-alumina-suspension-005m-6oz.jpg) MicroPolish agglomerated alumina powders of 0.05µm, 0.3µm and 1µm sizes deliver high removal rates and ideal for use on pure and alloyed lead and magnesium. #### MasterPolish® II Alumina Powder ![MicroPolish II Powder](https://buehler.com/ca/wp-content/uploads/sites/3/2024/08/0013787_micropolish-ii-powder-1m-1lb.jpg) MicroPolish II deagglomerated alumina powders of 1µm size delivers high removal rates on most minerals and metals. ##### Accessories | Final Polishing Suspensions | | | --- | --- | | MasterPrep Alumina | | | Sol-gel alumina suspension (0.05μm, ~8.5pH) is excellent for minerals, ferrous metals, carbides, precious metals, PWB’s electronics and polymers. | | | Part Number | Description | | [63-6377-006](https://shop.buehler.com/masterprep-suspension-5-oz) | 6oz \[0.18L\] | | [40-6377-032](https://shop.buehler.com/metadi-fluid-32oz-095l) | 32oz \[0.95L\] | | [40-6377-064](https://shop.buehler.com/masterprep-suspension-64-oz) | 64oz \[1.9L\] | | MasterMet Colloidal Silica | | | --- | --- | | Amorphous colloidal silica suspension (0.06μm, ~10pH) that provides chemo- mechanical polishing and is excellent for refractory metals, minerals and ceramics. | | | Part Number | Description | | [40-6370-006](https://shop.buehler.com/mastermet-polishing-suspension) | 6oz \[0.18L\] | | [40-6370-064](https://shop.buehler.com/mastermet-polishing-suspension-64-oz) | 64oz \[1.9L\] | | [40-6370-128](https://shop.buehler.com/mastermet-suspension-128oz) | 128oz \[3.8L\] | | MasterMet 2 Colloidal Silica | | | --- | --- | | Non-crystallizing amorphous colloidal silica suspension (0.02μm, ~10.5pH) that provides chemo-mechanical polishing action and is excellent for refractory metals, minerals, and ceramics. | | | Part Number | Description | | [40-6380-006](https://shop.buehler.com/mastermet-2-polish-susp-6-oz) | 6oz \[0.18L\] | | [40-6380-064](https://shop.buehler.com/mastermet-2-polish-susp64-oz) | 64oz \[1.9L\] | | MasterPolish Final Polish | | | --- | --- | | Blend of high purity alumina and colloidal silica (0.05μm, ~9pH) that contains minimal water and is optimal for water sensitive materials. | | | Part Number | Description | | [40-10084](https://shop.buehler.com/masterpolish-suspension) | 32oz \[0.95L\] | | MicroPolish Alumina Suspension | | | --- | --- | | Agglomerated alumina suspensions offering high removal rates and suitable for use on pure and alloyed lead and magnesium. | | | Part Number | Description | | [40-10083](https://shop.buehler.com/micropolish-05u-suspension6oz) | 0.05μm 6oz \[0.18L\] | | [40-10082](https://shop.buehler.com/micropolish-3u-suspension-6oz) | 0.3μm 6oz \[0.18L\] | | [40-10081](https://shop.buehler.com/micropolish-1u-suspension-6oz) | 1μm 6oz \[0.18L\] | | 40-10081-128 | 1μm 128oz \[3.785L\] | | MicroPolish Alumina Powder | | | --- | --- | | Agglomerated alumina powders offering high removal rates and suitable for use on pure and alloyed lead and magnesium. | | | Part Number | Description | | [40-10075](https://shop.buehler.com/micropolish-005u-powder-1) | 0.05μm 1lb \[0.45kg\] | | [40-10076](https://shop.buehler.com/micropolish-005u-powder-5) | 0.05μm 5lb \[2.3kg\] | | [40-10077](https://shop.buehler.com/micropolish-03u-powder-1) | 0.3μm 1lb \[0.45kg\] | | [40-10078](https://shop.buehler.com/micropolish-03u-powder-5) | 0.3μm 5lb \[2.3kg\] | | [40-10079](https://shop.buehler.com/micropolish-1u-powder-1) | 1μm 1lb \[0.45kg\] | | [40-10080](https://shop.buehler.com/micropolish-1u-powder-5) | 1μm 5lb \[2.3kg\] | | MiroMet Polish | | | --- | --- | | 1 μm cerium oxide water based suspension. It is used as a universal polishing compound for glass, but is also suitable for a soft materials with very low melting points. Concentrate - dilute with distilled water before use. | | | Part Number | Description | | [40-6355-006](https://shop.buehler.com/miromet-polish-6-oz) | 1 μm 6oz \[180 mL\] | | MicroPolish II Alumina Powder | | | --- | --- | | High quality deagglomerated alumina powders offering good surface finish and suitable for most minerals and metals. | | | Part Number | Description | | [40-6322-016](https://shop.buehler.com/micropolish-ii-powder-1m-1lb) | 1μm 1lb \[0.45kg\] | | Final Polishing Suspensions | | | --- | --- | | MasterPrep Alumina | | | Sol-gel alumina suspension (0.05μm, ~8.5pH) is excellent for minerals, ferrous metals, carbides, precious metals, PWB’s electronics and polymers. | | | Part Number | Description | | [63-6377-006](https://shop.buehler.com/masterprep-suspension-5-oz) | 6oz \[0.18L\] | | [40-6377-032](https://shop.buehler.com/metadi-fluid-32oz-095l) | 32oz \[0.95L\] | | [40-6377-064](https://shop.buehler.com/masterprep-suspension-64-oz) | 64oz \[1.9L\] | | MasterMet Colloidal Silica | | | --- | --- | | Amorphous colloidal silica suspension (0.06μm, ~10pH) that provides chemo- mechanical polishing and is excellent for refractory metals, minerals and ceramics. | | | Part Number | Description | | [40-6370-006](https://shop.buehler.com/mastermet-polishing-suspension) | 6oz \[0.18L\] | | [40-6370-064](https://shop.buehler.com/mastermet-polishing-suspension-64-oz) | 64oz \[1.9L\] | | [40-6370-128](https://shop.buehler.com/mastermet-suspension-128oz) | 128oz \[3.8L\] | | MasterMet 2 Colloidal Silica | | | --- | --- | | Non-crystallizing amorphous colloidal silica suspension (0.02μm, ~10.5pH) that provides chemo-mechanical polishing action and is excellent for refractory metals, minerals, and ceramics. | | | Part Number | Description | | [40-6380-006](https://shop.buehler.com/mastermet-2-polish-susp-6-oz) | 6oz \[0.18L\] | | [40-6380-064](https://shop.buehler.com/mastermet-2-polish-susp64-oz) | 64oz \[1.9L\] | | MasterPolish Final Polish | | | --- | --- | | Blend of high purity alumina and colloidal silica (0.05μm, ~9pH) that contains minimal water and is optimal for water sensitive materials. | | | Part Number | Description | | [40-10084](https://shop.buehler.com/masterpolish-suspension) | 32oz \[0.95L\] | | MicroPolish Alumina Suspension | | | --- | --- | | Agglomerated alumina suspensions offering high removal rates and suitable for use on pure and alloyed lead and magnesium. | | | Part Number | Description | | [40-10083](https://shop.buehler.com/micropolish-05u-suspension6oz) | 0.05μm 6oz \[0.18L\] | | [40-10082](https://shop.buehler.com/micropolish-3u-suspension-6oz) | 0.3μm 6oz \[0.18L\] | | [40-10081](https://shop.buehler.com/micropolish-1u-suspension-6oz) | 1μm 6oz \[0.18L\] | | 40-10081-128 | 1μm 128oz \[3.785L\] | | MicroPolish Alumina Powder | | | --- | --- | | Agglomerated alumina powders offering high removal rates and suitable for use on pure and alloyed lead and magnesium. | | | Part Number | Description | | [40-10075](https://shop.buehler.com/micropolish-005u-powder-1) | 0.05μm 1lb \[0.45kg\] | | [40-10076](https://shop.buehler.com/micropolish-005u-powder-5) | 0.05μm 5lb \[2.3kg\] | | [40-10077](https://shop.buehler.com/micropolish-03u-powder-1) | 0.3μm 1lb \[0.45kg\] | | [40-10078](https://shop.buehler.com/micropolish-03u-powder-5) | 0.3μm 5lb \[2.3kg\] | | [40-10079](https://shop.buehler.com/micropolish-1u-powder-1) | 1μm 1lb \[0.45kg\] | | [40-10080](https://shop.buehler.com/micropolish-1u-powder-5) | 1μm 5lb \[2.3kg\] | | MiroMet Polish | | | --- | --- | | 1 μm cerium oxide water based suspension. It is used as a universal polishing compound for glass, but is also suitable for a soft materials with very low melting points. Concentrate - dilute with distilled water before use. | | | Part Number | Description | | [40-6355-006](https://shop.buehler.com/miromet-polish-6-oz) | 1 μm 6oz \[180 mL\] | | MicroPolish II Alumina Powder | | | --- | --- | | High quality deagglomerated alumina powders offering good surface finish and suitable for most minerals and metals. | | | Part Number | Description | | [40-6322-016](https://shop.buehler.com/micropolish-ii-powder-1m-1lb) | 1μm 1lb \[0.45kg\] | ##### Accessories [![Burst Dispensing System](https://buehler.com/ca/wp-content/uploads/sites/3/2021/10/Burst_Stadium.png)](https://buehler.com/ca/products/grinding-and-polishing/accessories-and-consumables/burst-dispensing-system/) [Burst Dispensing System](https://buehler.com/ca/products/grinding-and-polishing/accessories-and-consumables/burst-dispensing-system/) ##### Related Consumables [![Silicone Carbide Papers](https://buehler.com/ca/wp-content/uploads/sites/3/2024/02/CarbiMet.png)](https://buehler.com/ca/products/grinding-and-polishing/accessories-and-consumables/silicon-carbide-grinding-papers/) [Silicon Carbide Grinding Papers](https://buehler.com/ca/products/grinding-and-polishing/accessories-and-consumables/silicon-carbide-grinding-papers/) [![0011394_apex-dgd-green-240-u-8_600](https://buehler.com/ca/wp-content/uploads/sites/3/2024/02/0011394_apex-dgd-green-240-u-8_600.png)](https://buehler.com/ca/products/grinding-and-polishing/accessories-and-consumables/diamond-grinding-discs/) [Diamond Grinding Discs](https://buehler.com/ca/products/grinding-and-polishing/accessories-and-consumables/diamond-grinding-discs/) [![MetaDi Diamond Suspension and Paste](https://buehler.com/ca/wp-content/uploads/sites/3/2024/02/MetaDi-Diamond-Suspension-and-Paste.png)](https://buehler.com/ca/products/grinding-and-polishing/accessories-and-consumables/diamond-suspensions-and-paste/) [Diamond Suspensions and Paste](https://buehler.com/ca/products/grinding-and-polishing/accessories-and-consumables/diamond-suspensions-and-paste/) [![Premium Polishing Cloths](https://buehler.com/ca/wp-content/uploads/sites/3/2024/02/Premium-Polishing-Cloths_updated.png)](https://buehler.com/ca/products/grinding-and-polishing/accessories-and-consumables/polishing-cloths/) [Polishing Cloths](https://buehler.com/ca/products/grinding-and-polishing/accessories-and-consumables/polishing-cloths/) ##### Product Literature [![Polishing Guide English](https://buehler.com/ca/wp-content/uploads/sites/3/2021/10/Polishing-Guide_English.jpg)](https://buehler.com/assets/Brochures/English/Consumables/FN01465_0216_Polishing_Application_Guide_WEB.pdf) [Polishing Guide](https://buehler.com/assets/Brochures/English/Consumables/FN01465_0216_Polishing_Application_Guide_WEB.pdf) [![Buehler Product Catalog](https://buehler.com/ca/wp-content/uploads/sites/3/2023/08/Buehler-Product-Catalog_default_600x782.jpg)](https://en.calameo.com/buehler/read/00639329103cfc405df2c) [Buehler Product Catalog](https://en.calameo.com/buehler/read/00639329103cfc405df2c) [![Magnetic Backed Polishing Cloth English](https://buehler.com/ca/wp-content/uploads/sites/3/2021/10/Magnetic-Backed-Polishing-Cloths_English.jpg)](https://buehler.com/assets/Brochures/English/Consumables/Magnetic-Polishing-Cloth-Sell-sheet.pdf) [Magnetic Backed Polishing Cloths](https://buehler.com/assets/Brochures/English/Consumables/Magnetic-Polishing-Cloth-Sell-sheet.pdf) ###### Frequently Asked Questions Why is Final Polishing important? A high quality polish will make the specimen surface smooth and shiny through mechanical and/or chemo-mechanical abrasion, while retaining the true microstructure and flatness. What is the difference in mechanism of action between MasterPrep® and MasterMet® 2? MasterPrep Alumina contains seeded gel alumina, which provides efficient material removal combined with superior surface finish via a purely mechanical, abrasive process. MasterMet 2, on the other hand, contains colloidal silica, which has a soft reaction layer to chemically attack the specimen surface. The spherical shape of the colloidal silica enables it to wipe away the top surface layer without scratches. A high quality polish will make the specimen surface smooth and shiny through mechanical and/or chemo-mechanical abrasion, while retaining the true microstructure and flatness. MasterPrep Alumina contains seeded gel alumina, which provides efficient material removal combined with superior surface finish via a purely mechanical, abrasive process. MasterMet 2, on the other hand, contains colloidal silica, which has a soft reaction layer to chemically attack the specimen surface. The spherical shape of the colloidal silica enables it to wipe away the top surface layer without scratches.