Engineering Metrology & Commercial Grinder Calibration

Taste is art, mechanics is science. Discover your grinder's hidden variables with laboratory precision.

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RSHM Engineers Ltd.

The Technology: 15-Stage Array

  • Physical Scanning: The sample passes through a proprietary 15-stage sequential sieve array.
  • Variable Isolation (Control Sample): We supply organic Arabica control beans from Peru[cite: 1, 3]. Uniform roasting neutralizes density and moisture variables[cite: 2]. Any deviation reflects solely on the grinder's mechanics[cite: 2].
  • Boulder Detection: Identifies coarse particles over 2000 microns[cite: 2, 3]. Direct generators of channel-induced under-extraction and harsh sourness[cite: 3].
  • Micro-dust Detection: Identifies fines under 180 microns[cite: 2, 3]. Blocks water flow and generates aggressive bitterness[cite: 2, 3].
  • Algorithm & IP: Raw data feeds into our closed analysis software[cite: 2]. Precise intermediate stage measurements are revealed exclusively in the client report[cite: 2].

The Output: Computerized Metrology Report (PDF)

  • Modal Peak: Mathematical identification of the maximum point in the grind distribution[cite: 1, 2].
  • The Sweet Spot: Verification of proper particle concentration, targeting over 75% in the required extraction zone[cite: 2, 3].
  • Burr Condition: Detection of mechanical deviations indicating metal wear or loss of geometric alignment[cite: 1, 2].
  • Multi-State Profile: Test up to 5 grind settings in a single kit[cite: 2, 3]. A dedicated report is generated for each state for absolute comparison[cite: 2, 3].

International Testing Protocol

1
Order and Location Check

Order & Location Check

Select your grind profiles (1 to 5) and submit your location[cite: 3]. We verify international courier routing and confirm total kit pricing[cite: 3].

2
Kit Dispatch

Receive Calibration Kit

Receive your complete test kit containing 150g of organic control beans, numbered sample pouches, and a pre-addressed return mailer[cite: 3].

3
Grind at Home

Grind & Pack

Grind the control beans at your target settings on your grinder, seal the numbered pouches, and pack them into the padded envelope[cite: 3].

4
Return and Lab Analysis

Return & Lab Analysis

Drop the return mailer at your local postal or courier drop-off point[cite: 3]. Following laboratory analysis, your custom visual PDF report is emailed to you[cite: 3].

Request International Test Kit