BS ISO 1304:2016 pdf download – Rubber compounding ingredients — Carbon black — Determination of iodine adsorption number 4 Apparatus Ordinary laboratory equipment (beakers, funnels, porcelain spoon, weighing bottles, etc.), plus the following: 4.1 Analytical balance, with sensitivities: a) 0,01 g (for 6.1.5 and 7.3.5); b) 0,1 mg (for other paragraphs). 4.2 Oven, preferably of the gravity-convection type, capable of temperature regulation to within ±1 °C at 125 °C and temperature uniformity to within ±5 °C. 4.3? Stoppered? one-mark? volumetric? flasks, preferably class A in accordance with ISO 1042, of capacities: a) 2 000 cm 3 , with a tolerance of ±0,60 cm 3 ; b) 1 000 cm 3 , with a tolerance of ±0,40 cm 3 . 4.4 Repetitive dispenser, 25 cm 3 capacity, calibrated to within ±0,03 cm 3 accuracy, or one-mark pipettes, high precision, of capacities: a) 20 cm 3 , with a tolerance of ±0,03 cm 3 ; b) 25 cm 3 , with a tolerance of ±0,03 cm 3 . If class A pipettes in accordance with ISO 648 are used, no calibration is necessary. In other cases,pipettes shall be calibrated to the nearest 0,01 cm 3 with distilled water, a temperature correction being made if necessary to show the true delivery at any volume used to within 0,01 cm 3 . The true delivered volume is the read volume plus (or minus) the calibration correction at that volume. For high-precision volume determination (see 7.2.2, 7.3.2, 8.3.3, 8.3.6 and 8.3.8), it is recommended that the 20 cm 3 and 25 cm 3 pipettes have calibration corrections of the same magnitude and in the same sense. 4.5 Digital burettes, with 0,01 cm 3 increment counter and zero-reset control, calibrated to within ±0,05 cm 3 accuracy, or burettes (for method A only), high precision, side-arm filling, graduated in 0,05 cm 3 and with automatic zero, of capacities: a) 25 cm 3 , with a tolerance of ±0,05 cm 3 ; b) 50 cm 3 , with a tolerance of ±0,05 cm 3 . If class A burettes in accordance with ISO 385 are used, no calibration is necessary. In other cases,burettes shall be calibrated to the nearest 0,01 cm 3 with distilled water, a temperature correction being made if necessary to show the true delivery at any volume used to within 0,01 cm 3 . The true delivered volume is the read volume plus (or minus)...
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