Quartz Mortar and Pestle: Specifying a Sample-Preparation Set

The chamber, rod and sample need to be considered together. Choosing quartz does not by itself establish the amount of material released during grinding, a final particle size or suitability for every sample hardness.

In this guide: Configuration · Design comparison · Start with the material and the required preparation · Specify the chamber with the rod · Recovery and cleaning are part of the selection · A custom set needs a clear delivered-parts list · Enquiry

The configuration discussed here

What changes from the simpler form?

A mortar is a working pair of chamber and rod rather than a passive sample container. The useful specification therefore includes their contact and the recovery route, alongside the chamber dimensions.

Start with the material and the required preparation

Describe the sample form, amount and the result the subsequent measurement needs. Crushing a larger piece, mixing a powder and preparing a particular particle-size distribution are different tasks. The vessel drawing cannot substitute for a preparation method.

If contamination matters to the analysis, identify the material to be avoided and the required blank or carryover assessment. The quartz designation is not evidence of a contamination-free result from the complete grinding process.

Specify the chamber with the rod

The rod needs access to the intended sample area while leaving room to manipulate and recover the sample. Supply the chamber form, tool-head envelope and any access restriction together. Overall mortar diameter does not describe the usable chamber on its own.

For a proposed custom chamber, identify the surfaces to retain and the region that needs a different profile. A different rod head is a matching-part request, not an automatic accessory for any mortar of the same outside size.

Recovery and cleaning are part of the selection

Explain how the prepared material will be removed and where residual sample would be unacceptable. If a particular cleaning tool or procedure is already used, include its access requirements and relevant sample conditions.

A proposed recovery or cleanliness check should use the laboratory method and agreed criteria. Do not infer a recovery percentage, reuse life or cleaning compatibility from a smooth-looking surface.

A custom set needs a clear delivered-parts list

For example, a customer may need to keep the available bench or enclosure footprint while changing the chamber depth. Show that footprint and describe the sample amount and rod access. MQ can then review the vessel and tool together.

Confirm the supplied rod, critical dimensions and any requested material or inspection record in the quotation. The proposed checks are specific to the order rather than proof that this reference set has been tested for the customer's sample.

Structure reference and specification points

Download the structure reference (PDF)

Does a quartz mortar guarantee that grinding introduces no contamination?

No. The sample, tool contact, wear and cleaning method need to be assessed for the analytical requirement. Specify the relevant contamination limit and how the process will be checked.