標準ガスの種類、範囲及び精度TYPE, RANGE OF CONCENTRATION, RANGE OF UNCERTAINTY OF STANDARD GASES
(注) (Notes) Standard Gases Class 1 are standard gases where every cylinder fits the Standard Gases 2級標準ガスとは、標準ガスのうち1/3を抜取り、指定校正機関が濃度信頼性試験を実施したとき、 Standard Gases Class 2 are standard gases where one out of three is taken out to be tested and fits the 零位調整標準ガス(ゼロガス)の種類及び品質TYPE & QUALITY OF ZERO GAS
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