Company record
Cal Check provides comprehensive support for opacity continuous emission monitoring (CEM) manufacturers, end‑users, and regulatory agencies. The company conducts audits of monitoring devices and neutral‑density filters used in opacity CEM applications, and it offers NIST‑traceable testing services for all opacity test filters. Cal Check supplies both replacement and new test filters, with performance capabilities reaching as low as 3 % opacity. In addition, the firm delivers training programs for field audits of opacity CEM systems, and these training sessions can be conducted directly at the customer’s location.
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