Table 9.

UNICPS glass commodities used and conversion factors (incl. sources) applied. All kg/$ factors have been derived from the UN Comtrade database (see Section 5).

Category	UNICPS commodity category	Conversion factors				Sources
		kg/u.	kg/m2	kg/m3	kg/$	kg/unit	kg/m2	kg/m3
1995–2016
Flat glass	Slivers, rovings, yarn and chopped strands, of glass	no physical values available	0.36
Flat glass	Voiles, webs, mats and other articles of glass fibers except woven fabrics	1005	5.3	2580	0.36	UNICPS	UNICPS	[109]
Flat glass	Safety glass	494	25	2510	0.38	UNICPS	[41]	[60]
Container glass	Bottles, jars and other containers (except ampoules), stoppers, lids and other closures, of glass	0.50	–	969	1.54	[125]		[90]
Flat glass	Drawn glass and blown glass, in sheets	0.09	14	833	0.39	[40]	UNICPS	[41]
1950–2003
Flat glass	Glass, drawn or blown, in rectangles, unworked	0.09	10	833	2.47	[40]	UNICPS	[41]
Flat glass	Glass, cast, rolled, drawn or blown	0.09	9.7	833	2.3	[40]	UNICPS	[41]
Flat glass	Glass fibres (including glass wool)	1005	5.3	2580	0.45	UNICPS	UNICPS	[109]
Flat glass	Toughened or laminated safety glass	494	8.9	2510	0.48	UNICPS	UNICPS	[60]
Container glass	Glass bottles and other containers of common glass	0.7	-	969	2.3	UNICPS		[90]