Division A.3 Apparatus and Equipment

Usual laboratory apparatus and in particular the following:

1. A.3.1.

   Analytical balance capable of reading 0,1 mg.

2. A.3.2.

   Thermometer, with ground glass joint, calibrated in tenths of a degree from 10 to 30 °C. This thermometer must be certified or checked against a certified thermometer.

3. A.3.3.

   Pyrex-glass pycnometer of approximately 100 ml capacity fitted with a removable ground-glass thermometer (A.3.2). The pycnometer has a side tube 25 mm in length and 1 mm (maximum) in internal diameter ending in a conical ground joint. Other pycnometers as described in ISO 3507, e.g. 50 ml may be used if appropriate.

4. A.3.4.

   A tare bottle of the same external volume (to within 1 ml) as the pycnometer and with a mass equal to the mass of the pycnometer filled with a liquid of density 1,01 (sodium chloride solution A.2.1).

5. A.3.5.

   Thermally insulated jacket that fits the body of the pycnometer exactly.