Qualifying a Second Calcium Carbonate Source
A second calcium carbonate source should protect the requirements that already matter in your production. Share your current specification and a reference sample, and we can build a candidate comparison around them. Matching a grade name is a starting clue; comparable data and your trial results support the approval.
A Clear Decision Basis
Identity
Compound and production route
Particle data
Comparable distribution methods
Surface
Treatment and moisture basis
Trial result
Your unchanged acceptance limits
Match the Characteristics That Control Production
A second source needs to match the characteristics controlling your production, rather than copy the first supplier's model name. XM-300 gives a useful example: its listed average size is 1.5 μm and D97 is 3.8 μm. Those two figures describe different parts of the powder specification.
A Transfer Specification for the New Source
Your Candidate Shortlist
Use these listed candidates to start a grade-specific discussion with us.
Lab Work Before Production
Compare feeding, dispersion and the finished material with the control, then include the storage or ageing checks your product needs. A passing laboratory sample is the start of scale-up; production release follows the conditions and acceptance limits agreed by your team.
Selection Priorities
Maintain the control
Run the incumbent material alongside the proposed source under the same evaluation conditions.
Set a transfer window
Define the acceptable variation in your critical powder and finished-product measurements.
Approve the supplied grade
Link the accepted sample to its model, specification and proposed batch documentation.
Approval That Survives Reorders
Keep a simple change record for source, particle profile and treatment. Your repeat-order specification should identify the accepted grade, the batch documents required and the deviations that need review. This gives purchasing and production the same reference.
Continue the Material Review
Start with Your Material Brief
Send us the details below to review a concrete grade proposal and the next evaluation step.
Qingdao Relia Industries Co., Ltd. · China calcium carbonate manufacturing and industrial material enquiries.
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