Ichemco Test Method

Volatile Content in Powdery Products

Id:	2
Measure unit:	%
Procedure:	The clean tinplate dish is weighed to the nearest mg (W1). 2-3 g of the sample are quickly weighed into the dish and the sample weight recordered to the nearest mg (W2). The content of the dish are spread as evenly as possible over the bottom of the dish by tilting. The dish and its content are then placed in the oven for one hour at 110°C. After the specified time the dish is removed from the oven, allowed to cool in 2-3 minutes, and weighed to the nearest mg (W3). Two determinations shall be carried out and the result reported as the mean of two provided the two determinations do not differ more than 2%. Total solids content: (W3-W1)/W2*100 %. If the sample total solids content is less than 5%, 10-15 g must be weighed and the two determinations must not differ more than 0,03%.
Remarks:
Instruments:	Analitic balance with 1mg accurancy. Oven, thermostatically controlled at 110°C. Flat bottomed tinplate dish 75 mm diameter and 10 mm deep.
Recordings:	Report the Total solids content value in % with the sample identifying data.
External references:	TAPPI T 671 TAPPI T 638 ASTM D 280

Rev. 2 - 22/12/2000