跳至主要内容

ISO 17025 and CNAS

ISO17025 is the international standard for laboratory accreditation services; the latest version is released in May, 2005. The full name of ISO/IEC17025:2005-5-15 is Accreditation Criteria for the Competence of Testing and Calibration Laboratories. ISO17025 standard is the laboratory management standard formulated by the international Standardization Organization ISO/CASCO (Conformity Assessment Committee). Internationally the organization that manages laboratory accreditation is International Laboratory Accreditation Cooperation (ILAC), attended by 44 laboratory accreditation institute including CHINA NATIONAL ACCREDITATION COMMITTEE FOR LABORATORIES (CNACL).

ISO17025 standard mainly includes: definitions, organization and management, quality system, audits and reviews, personnel, accommodation and environmental conditions, equipment and reference materials, traceability and calibration, calibration and test methods, sample management, record, certificate and report, subcontracting tests and calibrations, purchasing services and suppliers, complaints etc. This standard core content is equipment and reference materials, traceability and calibration, calibration and test methods and sample management; these contact emphasis is to assess whether the laboratory or test capability meets the expected requirements.

CHINA NATIONAL ACCREDITATION SERVICE FOR CONFORMITY ASSESSMENT (CNAS) laboratory accreditation criteria are according to ISO/IEC17025, it is an internationally accepted standard for laboratory quality and technical requirements. The laboratory gets accredited by CNAS, which means that it has been established a set of quality management system based on international standards. As long as the personnel carry out work according to the system strictly, the laboratory’s technical capacity will be guaranteed. The test/calibration services provided by the laboratory to the customer can claim to be accordance with the international standards.

CNAS is the only laboratory accreditation institute in China; it bears nationwide laboratories for ISO17025 standard approval. All calibration and test laboratories can adopt and implement the ISO17025 standard. In accordance with international practice, data provided by the ISO17025 standard laboratory have legal effect and get international recognized. At present, China has more than 1,000 laboratories that get through the ISO17025 standard certification. Through the implementation of standard to improve the accuracy of the test data and results and expand the laboratory’s reputation, thereby greatly improve the economic and social benefits.

All Pego’s products can be sent to the lab authorized by CNAS and get the calibration certificate, which meets ISO17025 standard. 

评论

此博客中的热门博文

JIS D0203 rain nozzle and spray nozzle test chamber

https://www.pegotester.com/JISD0203_rain_and_spray_test_chamber.html The spray nozzle and rain nozzle test chamber is designed to meet the test requirements of JISD0203 R1/R2 rain test and S1/S2 spray test. The rain nozzle has 2 holes and spray nozzle has 40 holes. Type Symbol Test Purpose Test Method Rain Test R1 Auto parts against water direct contact water pressure: 0.01Mpa, water flow: 1.9L/min, water temperature: ordinary temperature, test time: 10min R2 Auto parts against rain or spray water   indirect contact water pressure: 0.03Mpa, water flow: 3.2L/min, water temperature: ordinary temperature, test time: 10min Spray Test S1 Auto parts against rain or jet water direct contact water pressure: 0.10Mpa, water flow: 24.5L/min, water temperature: ordinary temperature, test time: 30min S2 Auto parts against riptide water pressure: 0.30Mpa, water flow: 39.2L/min, water temperature: ordinary temperature, test time: 1h  

UL746A High Current ARC Ignition Test Apparatus 32.5A/COSφ0.5

UL746A High Current ARC Ignition Test Apparatus 32.5A/COSφ0.5   1.  Introduction: The high current arc ignition tes t apparatus is designed according to  IEC60950-1:2001  clause 4.7.3.6 , BS/EN60950-1:2001, BS7002:2001, GB4943-2001 and UL746A, IEC60947.1:1999, GB/T14048.1-2000, IEC730.1:1993, GB14536.1-1998 and etc..  It ’ s used to measure and assess  solid insulating material against to resistance to ignition from arcing electrical sources. A power 240V(AC)/60Hz is to be supplied to the test electrodes  (fixed electrode and movable electrode) , a series (inductive-resistive) air core impedance is to be provided to yield a short circuit current of 32.5A and a power factor of 0. 5. The sample is be to positioned with the electrodes making initial contact on the surface of the sample, the circuit is to be energized and the cyclic arcing started. The timing of arcs is to be adjusted to a rate of 40 arcs/min, the rate of electrode separation is to be 254±...

what equipment can be used for IPX3 and IPX4 water ingress protection test?

1. Spray nozzle 1.  Introduction The spray nozzle hand-held device is designed according to IEC60529 figure 5, it is it is apply to verify the protection against spraying water (IPX3) and splashing water (IPX4) for large size sample. The hand-held device is consisted by spray nozzle, moving shield, counterweight, hose and pressure gauge. The spray nozzle is made of brass and has 121 holes with diameter 0.5mm (1 hole at center, 1 inner circles of 12 holes at 30 0  pitch, 4 outer circles of 24 holes at 15 0 pitch). The moving shield is made of aluminum, the counterbalanced shield is in place for IPX3 test, the water pressure is adjusted to give the specified delivery rate, the pressure to achieve this delivery rate will be in the range of 50kPa to 150kPa, and it should be kept constant during the test, the test duration is 1min/m 2  of the calculated surface of the enclosure and with a minimum duration of 5 min. For IPX4 test, the counterbalanced shield is removed fro...