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JJG 639-1998 English PDF

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JJG 639-1998: Verification regulation of ultrasonic source for medical ultrasonic diagnostic equipment

JJG 639: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JJG 639-1998English389 Add to Cart 3 days [Need to translate] Verification regulation of ultrasonic source for medical ultrasonic diagnostic equipment   JJG 639-1998
JJG 639-1990EnglishRFQ ASK 3 days [Need to translate] Verification Regulation of Ultrasonic Source for Medical Ultrasonic Diagnostic Equipment Obsolete JJG 639-1990

PDF similar to JJG 639-1998


Standard similar to JJG 639-1998

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Basic data

Standard ID JJG 639-1998 (JJG639-1998)
Description (Translated English) Verification regulation of ultrasonic source for medical ultrasonic diagnostic equipment
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A59
Word Count Estimation 11,121
Date of Issue 6/20/1905
Date of Implementation 3/1/1999
Older Standard (superseded by this standard) JJG 639-1990
Issuing agency(ies) State Quality and Technical Supervision
Summary This standard applies to new manufacture, use and repaired (including the replacement of the probe), the nominal frequency is not higher than 7. 5MHz, generic B-type pulse echo ultrasonic diagnostic apparatus (hereinafter referred to as the instrument) Ultrasonic Deep (excluding special probe) accreditation.

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Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJG 639-1998 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.