Japan Calibration Service System (JCSS) consists of the National standards provision system and the Calibration laboratory accreditation system introduced by the amended Measurement Law enforced in November, 1993.
Under the JCSS of calibration laboratory accreditation system, calibration
laboratories are assessed and accredited as Accredited Calibration Laboratories
to meet the requirements of the Measurement Law, relevant regulations and
International Accreditation Japan (IAJapan), NITE, plays as the accreditation body of JCSS and conducts
accreditation process with the system conforming to ISO/IEC 17011
and relevant international criteria.
JCSS, Accredited Calibration Laboratories meet the requirements laid down in the Measurement Law as well as those of ISO/IEC 17025.
Calibration certificates with the above JCSS symbol issued by Accredited Calibration Laboratories assure the traceability to National Measurement Standards as well as a laboratory's technical and operational competence and are acceptable in the world through the ILAC and APLAC MRA.
（Reference Material Producers meets the requirements of ISO Guide 34:2009
and ISO/IEC 17025:2005）