Testing of glass; grain method for determination of the hydrolytic resistance of glass as a material at 98 °C and classification of glass into hydrolytic classes— 4 стр.
Testing of lubricants - Testing of anticorrosion oils for internal combustion engines with respect to corrosion preventing properties, sea water immersion test— 3 стр.
Testing of mineral oils; determination of the phosphorus content in lubrication oils and additives, digestion procedure and photometric determination— 4 стр.
Testing of lubricants; testing of anticorrosion oils for internal combusting engines in respect of corrosion preventing properties, sea water immersion test— 3 стр.
Investigations of the raw material in hard-coal-mining; determination of the particle-size-distribution <kleiner>60 µm by ultrasonic-microsieve-analysis— 8 стр.