PK Calibration & Validation
PK Calibration & Validation is wholly owned by Marsden Holding. Marsden is a full spectrum facility services provider, offering janitorial, security, building maintenance, and specialty property services throughout the United States. Through PK Calibration & Validation’s combined national support and local operations, we provide our clients with the strength of a large corporation with the individualized care of a small business. Marsden’s operating companies provide services to clients throughout the United States, offering janitorial, security, mechanical, emergency response, and facility services.