State system for ensuring the uniformity of measurements. Acoustics. Reference zero for the calibration of audiometric equipment. Part 1. Reference equivalent threshold sound pressure levels of pure tones for supra-aural earphones
Explosive atmospheres. Part 37. Non-electrical equipment for explosive atmospheres. Non electrical type of protection constructional safety 'c', control of ignition source 'b', liquid immersion 'k'
Foodstuffs. Determination of ochratoxin A in cereal based foods for infants and young children. HPLC method with immunoaffinity column cleanup and fluorescence detection
