quality control service for others provided through a third-party laboratory that ensures the existence of the proper components in and the stability of analytical chemical standards used to calibrate analytical instruments utilized by analytical laboratories in the performance of environmental testing and compliance programs

'analyt':26,32,36 'calibr':31 'chemic':27 'complianc':45 'compon':20 'control':2 'ensur':14 'environment':42 'exist':16 'instrument':33 'laboratori':12,37 'other':5 'parti':11 'perform':40 'program':46 'proper':19 'provid':6 'qualiti':1 'servic':3 'stabil':24 'standard':28 'test':43 'third':10 'third-parti':9 'use':29 'util':34

ULTRAGOLD

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