Store the mill in a dry, temperature-controlled environment to prevent electrical and mechanical degradation. Sealing integrity of agate jars must be verified before each use to avoid sample leakage and potential contamination.

• Electrical Safety: Connect the mill to a dedicated grounded 220 V AC outlet to mitigate electrical hazards.
• Jar Handling: Agate jars are brittle and may fracture if over-tightened or dropped, necessitating careful handling and proper sealing torque.
• Vacuum Operation: Vacuum grinding requires compatible seals and a controlled evacuation process to prevent implosion or jar collapse.
• Wet Grinding Precautions: Contain slurry fully within jars to avoid exposing the motor and bearings to corrosive or conductive liquids.

This procedure ensures safe startup and shutdown of the mill equipped with four agate jars for dry, wet, or vacuum grinding. Proper jar sealing and speed selection are critical to avoid mechanical failure and sample contamination.

Required Equipment: Agate grinding jar set (4 jars with seal rings)

1. Inspect Jars
   Inspect each agate jar for cracks, chips, or worn seals and clean the interior to remove residual material.
2. Secure Sealing
   Place sample and grinding media in the jar, tighten the lid, and adjust sealing pressure using the graduated scale until the indicator aligns with the recommended mark.
3. Mount Jars in Holders
   Position each sealed jar into a holder and confirm that it locks securely into place without wobbling.
4. Set Operation Parameters
   Set the revolution speed to the desired value within the safe operating range (0–335 r/min) and configure the timer for the required duration.
5. Initiate Grinding
   Press the start button and monitor the mill for unusual vibrations or noise during the first 30 seconds of operation.
6. Shutdown and Unload
   Allow the mill to come to a complete stop before opening the lid, then carefully remove the jars and release any residual vacuum before unsealing.

The Atomfair XQM-(8-12) is a large-capacity planetary mill optimized for heavy metal analysis in soil, with four 250 ml agate jars that offer adjustable sealing pressure and support for dry, wet, and vacuum grinding. It includes an integrated electric screener for particle size classification, but requires pre-crushing for feed sizes exceeding 10 mm for soil or 3 mm for other materials.

Positive

• Multi-mode grinding flexibility: Supports dry, wet, and vacuum grinding modes, enabling versatile sample preparation for a range of laboratory applications without requiring separate equipment.
• Adjustable jar sealing pressure: The agate grinding jars incorporate a graduated scale for precise sealing pressure adjustment, allowing controlled grinding conditions critical for volatile or oxygen-sensitive materials.

Trade-offs

• Feed particle size limitation: Maximum feed particle size is 10 mm for soil and 3 mm for other materials; samples exceeding these dimensions must be pre-crushed to avoid damage or inefficient grinding.
• Standard jar material specificity: The included agate jars are ideal for heavy metal analysis but may not be chemically or mechanically suitable for all sample types; alternative jar materials (e.g., zirconia, stainless steel) are available as optional accessories.

Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.

To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.

Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).